Identification_Information:
  Citation:
    Citation_Information:
      Originator: Jonathan C. Matti
      Originator: Douglas C. Morton
      Originator: Victoria E. Langenheim
      Publication_Date: 2015
      Title: Geologic and geophysical maps of the El Casco 7.5Õ quadrangle, 
Riverside County, California, with accompanying geologic-map database
      Edition: Version 1.0
      Geospatial_Data_Presentation_Form: vector digital data; ASCII digital data 
(gravity measurements and locations of maximum horizontal gravity gradient)
      Series_Information:
        Series_Name: Open-File Report
        Issue_Identification: OF 2010-1274
      Publication_Information:
        Publication_Place: Reston, Va.
        Publisher: U.S. Geological Survey
      Online_Linkage:  http://dx.doi.org/10.3133/ofr20101274
  Description:
    Abstract:
      Geologic Information:
      The El Casco 7.5' quadrangle is located in the inland empire of southern 
California, a geologic region where contractional deformation in the San 
Gorgonio Pass area gives way westward to transtensional deformation associated 
with the right-lateral San Jacinto Fault zone.

      The quadrangle is traversed by several important fault zones, including: 
(1) the Banning Fault, a late Miocene structure that once was a strike-slip 
strand of the right-lateral San Andreas Fault system and since has been the 
locus of periodic contractional reactivation; (2) several strands of the 
Quaternary San Jacinto Fault zone, a northwest-trending right-lateral strike-
slip fault zone that is an important component of the modern San Andreas 
transform-fault system in southern California; (3) the Cherry Valley Fault, a 
middle to late Quaternary thrust fault that is the westernmost projection of the 
San Gorgonio Pass Fault zone; (4) the San Timoteo Canyon Fault, a previously 
unrecognized northwest-trending normal dip-slip fault beneath the San Timoteo 
drainage system that played an important role in the deposition of early and 
middle Quaternary deposits north of the San Timoteo Badlands; (5) the Beaumont 
Plain Fault zone, a northwest-trending normal-slip fault complex in the 
northeast corner of the quadrangle that forms east- and west-facing scarps in 
late Quaternary alluvial deposits; and (6) the Laborde Canyon Fault zone, a 
newly recognized belt of down-to-the-northeast normal-slip faults in the Mt. 
Eden area that developed on the flank of the San Timoteo Anticline.

      Crystalline basement rocks underlie all of the El Casco quadrangle, but 
are exposed only in two areas:  (1) in the northeast corner of the quadrangle, 
north of the Banning Fault (rocks of Transverse Ranges-type); (2) in the south 
part of the quadrangle (rocks of Peninsular Ranges-type).  The Banning Fault 
presumably separates the two regionally extensive basement suites (Matti and 
others, 1992).

      Much of the El Casco quadrangle is underlain by sedimentary materials that 
are late Miocene to middle Pleistocene in age.  These crop out in the San 
Timoteo Badlands and in low hills north of San Timoteo Canyon.  The deposits 
accumulated during a period of sedimentation that began in late Miocene time 
(probably about 7 or 8 million years ago) and continued into the middle 
Pleistocene (~700 ka).  In the Badlands, older parts of these deposits are 
deformed into a major anticlinal fold (San Timoteo Anticline) that for much of 
its length plunges gently to the northwest.  Due to this gentle plunge, older 
strata in the sequence crop out in the southeastern part of the El Casco 
quadrangle, while progressively younger strata crop out to the northwest.

      The late Miocene to middle Pleistocene sedimentary sequence is divided 
into three map units:  (1) the Mt. Eden formation and (2) the overlying San 
Timoteo formation, both defined originally by Frick (1921), and (3) the 
sedimentary deposits of Live Oak Canyon formation, newly introduced in this 
report.  Sandy and conglomeratic sediment in the Mt. Eden formation was derived 
from local Peninsular Ranges sources and deposited in alluvial environments 
adjacent to those sources.  Muddy, sandy, and conglomeratic sediment in the San 
Timoteo formation was derived from San Gabriel Mountains-type sources north of 
the El Casco quadrangle and shed south and southeast as a braid-plain complex 
that lapped against the Peninsular Ranges landscape; mudrock represents playa 
and lacustrine deposits.  Because of their contrasting sediment sources, the 
transition between the Mt. Eden and San Timoteo depositional cycles represents 
an important paleogeographic shift in the Inland Empire region of southern 
California.  Ultimately, inselbergs of Peninsular Ranges rock in the El Casco 
quadrangle were completely buried by sediment of the San Timoteo formation; the 
inselbergs currently are being exhumed and re-exposed.  The San Timoteo 
depositional regime terminated about 1.2 Ma with inception of the San Jacinto 
Fault, and was succeeded by deposition of sandy and conglomeratic sediment of 
the Live Oak Canyon sequence that accumulated in alluvial environments ponded 
north of a growing ridge that developed in the San Timoteo Badlands.

      Quaternary surficial deposits occur locally throughout the El Casco 
quadrangle, but are extensive in two areas:  (1) the San Jacinto Valley in the 
southwest part of the quadrangle and (2) the San Timoteo Creek drainage basin in 
the north part of the quadrangle.  In San Jacinto Valley, surficial deposits 
form a thick fill of muddy and sandy sediment deposited mainly by alluvial fans 
that head north and northeast into canyons dissecting the San Timoteo Badlands.  
The alluvial-fan deposits interfinger with overbank alluvial and lacustrine 
deposits of the San Jacinto River system.  In the north part of the quadrangle, 
San Timoteo Creek and its distributaries form a long-lived fluvial system that 
has evolved over the last several hundred thousand years.  This system has been 
the site of repeated dissection and alluvial aggradation---geomorphic cycles 
that alternately have eroded the landscape into valleys and ridges and then 
back-filled the valleys with multiple alluvial-fan and axial-valley sequences.  
The latter periodically have filled tributary valleys and buttressed 
unconformably against landforms developed on the San Timoteo formation.  
Throughout middle and late Quaternary time, the San Jacinto and San Timoteo 
Creek depositional systems have evolved independently from one another, 
separated by highground formed by the San Timoteo Badlands.

      Late Cenozoic depositional and structural events within the El Casco 
quadrangle provide insight into the evolution of the San Andreas Fault system.  
The San Timoteo formation of Frick (1921) records a long-lived period when 
alluvial-fan and braid-plain sediments derived from basement rocks of San 
Gabriel Mountains-type encroached southeastward and southward onto a landscape 
underlain mainly by crystalline rocks of Peninsular Ranges-type.  This 
paleogeographic regime persisted until about 1.2-1.5 Ma, when the regime was 
disrupted by inception of the San Timoteo anticline and initiation of new 
depositional patterns within the San Timoteo sedimentary sequence.  The new 
regime developed north of the San Timoteo Badlands, within a synformal 
depositional basin that formed in association with the San Timoteo anticline to 
the south; basin formation appears to have been facilitated by down-to-the-north 
normal-slip displacements on the San Timoteo Canyon Fault.  Sediment that formed 
in this basin buttressed unconformably against older beds of the San Timoteo 
sequence that were being arched by the San Timoteo anticline into a higher-
standing landscape.  The syntectonic sedimentary sequence locally exceeds 1,200 
ft in thickness, but mainly is concealed beneath late Quaternary deposits of the 
Beaumont Plain.  These syntectonic deposits are more permeable than the San 
Timoteo sequence, and form an extensive groundwater reservoir.  All of these 
sedimentary and structural events are associated with the inception and movement 
history of the San Jacinto Fault zone.

      Geophysical Information:

      Gravity data were compiled, collected, and edited to produce an isostatic 
gravity map of the El Casco 7.5Õ quadrangle.  Gravity lows generally indicate 
Cenozoic basins, such as the basin beneath San Jacinto Valley.  Gravity highs 
are associated with exposed or shallowly buried crystalline basement rocks.

      Digital Files:

      The geologic database of the El Casco 1:24,000-scale 7.5' quadrangle, 
Riverside County, California, was prepared by the San Andreas Fault, southern 
California Project (SAFSOC), a regional geologic-mapping project sponsored 
jointly by the U.S. Geological Survey and the California Geological Survey.  The 
database was created in ARCGIS (Environmental Systems Research Institute, ESRI), 
and includes the following files:  (1) this metadata file; (2) a readme.txt 
file; (3) geodatabase files containing geologic and geomorphic data and 
associated observation-station data; (4) an .mxd file that establishes 
relationship classes and joins between the spatial data and associated non-
spatial tables so that the database can be interrogated using SQL queries and 
browsed using ESRI's i-tool; (5) a style file (elcas_geo.style) that allows 
the user to display in ArcGIS the geologic map data so that it is identical 
to how it appears on sheet 1 (see #7 below); (6) a user guide 
(ofr20101274_database_userguide.pdf) that explains how the database is 
structured (Appendix 1, fig. A1) and how information can be accessed and 
queried; (7) a graphics file of the geologic-map plot and map-marginal 
explanatory information (ofr20101274_sheet1.pdf); (8) a graphics file 
(ofr20101274_sheet2.pdf) showing the location of geologic and geotechnical data 
stations used in producing the geologic map; (9) a graphics file 
(ofr20101274_sheet3.pdf) showing contours of gravity data measured at locations 
within the El Casco quadrangle; (10) a pamphlet (ofr20101274_pamphlet.pdf) that 
describes earth materials and geologic structures in the quadrangle and 
interprets their geologic history.  This pamphlet includes an expanded 
Description of Map Units.

      The database includes four ASCII files containing gravity data and two 
ASCII files with horizontal gravity gradient locations.

    Purpose:
      Geologic and geophysical databases for the El Casco quadrangle were 
developed as a contribution to the National Cooperative Geologic Mapping 
Program's National Geologic Map Database, and are intended to provide a general 
geologic setting of the quadrangle.  The databases provide information about 
geologic materials and structures, including the modern trace of the San Jacinto 
Fault and associated faults that have developed in the map area due to 
complexities in the San Andreas Fault system in southern California.

      Geologic information contained in the El Casco database is general- 
purpose data that are applicable to land-related investigations in the earth and 
biological sciences.  The term "general-purpose" means that all classes of 
geologic features have minimum information content required to characterize 
their general geologic characteristics and to interpret their general geologic 
history.  However, no single feature class has enough information to 
characterize its properties and origin definitively.  For this reason the 
database cannot be used for site-specific geologic evaluations, although it can 
be used to plan and guide such investigations.

      Gravity data in the El Casco database were compiled and collected in order 
to provide basic geophysical information that augments and enhances regional 
interpretations of crustal framework and architecture.

    Supplemental_Information:
      This database updates geologic information for the El Casco quadrangle 
presented previously at reduced scale in the geologic compilation of the Santa 
Ana 30-minute x 60-minute quadrangle (Morton, 1999; Morton and Miller, 2006). 
The El Casco database differs from the earlier releases in the following ways:

      (1) Sedimentary materials in the north part of the quadrangle previously 
referred to as "San Timoteo formation of Frick (1921), upper member" are herein 
named the "sedimentary deposits of Live Oak Canyon" (new).

      (2) A fault in the south part of the El Casco quadrangle herein named "San 
Jacinto Fault, Moreno Valley strand" was unnamed in the earlier compilations.

      (3) A fault in the north-central part of the El Casco quadrangle herein 
named the San Timoteo Fault was not recognized in the small-scale compilations.

      This database updates geophysical information originally presented in 
smaller scale formats.  One file ("old-edited.dat.txt") contains data originally 
published in Langenheim and others (1991) but edited for the more detailed scale 
of this map.  Three files are from Langenheim and others (2006): (1) "dma-
edit.dat.txt" containing point data from the National Geodetic Survey that have 
been edited for this map; (2) "new-ucr-edit.dat.txt" containing data collected 
by the University of California at Riverside since 1991 and edited for this map; 
(3) "usgs-iso.dat.txt" containing data collected by the U.S. Geological Survey 
since 2000.

      Frick, C., 1921, Extinct vertebrate faunas of the Badlands of Bautista 
Creek and San Timoteo Canon, southern California: Berkeley, University of 
California Publications in Geology, v. 12, no. 5, p. 277-424.

      Langenheim, V.E., Chapman, R.H., Sikora, R.F., Ponce, D.A., and Dixon, 
E.T., 1991, Isostatic residual gravity map of the Santa Ana 1:100,000-scale 
quadrangle, California:  U.S. Geological Survey Open-File Report 91-555, scale 
1:100,000.

      Langenheim, V.E., Lee, Tien-Chang, Biehler, Shawn, Jachens, R.C., and 
Morton, D.M., 2006, Isostatic gravity map with geology of the Santa Ana 30-
minute x 60-minute quadrangle, southern California: U.S. Geological Survey 
Scientific Investigations Map 2951, scale 1:100,000 
(http://pubs.usgs.gov/sim/2006/2951/).

      Matti, J.C., Morton, D.M., and Cox, B.F., 1992, The San Andreas Fault 
system in the vicinity of the central Transverse Ranges province, southern 
California: U.S. Geological Survey Open-File Report 92-354, 40 p., scale 
1:250,000.

      Morton, D.M., 1999, compiler, Preliminary digital geologic map of the 
Santa Ana 30' x 60' quadrangle, southern California, version 1.0:   U.S. 
Geological Survey Open-File Report 99-172, scale 1:100,000 
(http://pubs.usgs.gov/of/1999/of99-172/).

      Morton, D.M., and Miller, F.K., 2006, Geologic map of the Santa Ana and 
San Bernardino 30-minute x 60-minute quadrangles, California:  U.S. Geological 
Survey Open-File Report 2006-1217, four map sheets, scale 1:100,000 
(http://pubs.usgs.gov/of/2006/1217/).

  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: 1938
        Ending_Date: 2009
    Currentness_Reference:
      Time period of information content for geologic data in the El Casco 
database reflects (1) the vintage (1938, 1953, 1966, 1975) of archival aerial 
photographs used to interpret geologic features; (2) gravity data collected by 
other workers and compiled for this report; (3) gravity data collected by the 
U.S. Geological Survey since 2000; and (4) geologic observations made by the map 
authors between 1973 and 2009.
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: As needed
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -117.125269
      East_Bounding_Coordinate: -116.999999
      North_Bounding_Coordinate: 34.000063
      South_Bounding_Coordinate: 33.874847
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: Banning Fault
      Theme_Keyword: Beaumont Plain Fault zone
      Theme_Keyword: bedrock
      Theme_Keyword: Cherry Valley Fault
      Theme_Keyword: density
      Theme_Keyword: geology
      Theme_Keyword: geologic map
      Theme_Keyword: gravity
      Theme_Keyword: isostatic anomaly
      Theme_Keyword: Laborde Canyon Fault
      Theme_Keyword: San Jacinto Fault
      Theme_Keyword: San Timoteo Fault
      Theme_Keyword: surficial
    Place:
      Place_Keyword_Thesaurus: None
      Place_Keyword: California
      Place_Keyword: Calimesa
      Place_Keyword: El Casco 7.5' quadrangle
      Place_Keyword: Mt. Eden
      Place_Keyword: Riverside County
      Place_Keyword: San Jacinto Valley
      Place_Keyword: San Timoteo Badlands
      Place_Keyword: San Timoteo Canyon
      Place_Keyword: San Timoteo Creek
    Stratum:
      Stratum_Keyword_Thesaurus: None
      Stratum_Keyword: sedimentary deposits of Live Oak Canyon (new)
      Stratum_Keyword: San Timoteo formation of Frick (1921)
      Stratum_Keyword: Mt. Eden formation of Frick (1921)
  Access_Constraints: None
  Use_Constraints:
    Use of the El Casco database should not violate the spatial resolution of 
the data, which were collected, compiled, digitized, and edited at a scale of 
1:24,000 (that is, 1 inch on the map = 24,000 inches [2,000 ft] on the ground). 
Geologic-line and -point data are located as accurately as possible with 
reference to hypsographic and planimetric elements of the topographic basemap.  
The data were not collected using technologies that allow greater locational 
accuracy and precision (for example, Global Positioning Satellite [GPS] system 
and Digital Orthophoto Quarter Quadrangle [DOQQ] images). This has two 
implications for data users:

    (1) The position of line and point data represented in the El Casco database 
is only as good as the topographic basemap and the database authorsÕ skill 
allow;

    (2) Even though the digital format of the data allows the user to zoom to 
scales larger than 1:24,000, this will not yield increased accuracy or greater 
detail.  In fact, plotting or analysis at scales larger than 1:24,000 will yield 
irregularities and discrepancies in line shape and location that are artifacts 
of the digitizing process rather than more detailed or refined portrayals.  
Although in some places higher-resolution data may be incorporated in the 
database, the resolution of the entire database output is constrained by the 
1:24,000-scale at which the data mainly were collected and compiled.

    The El Casco 7.5' geologic-map database should be used to evaluate and 
understand the geologic character of the quadrangle as a whole, not the details 
of a specific area. It should not be used for site-specific land-use planning or 
for site-specific geologic evaluations.

    The database is sufficiently detailed to identify and characterize many 
actual and potential geologic hazards represented by faults and landslides or 
posed by ground subsidence and earthquake-generated ground shaking. However, it 
is not sufficiently detailed for site-specific determinations or evaluations of 
these features.  Faults shown do not take the place of fault-rupture hazard 
zones designated by the California State Geologist (see Hart, 1988).

    Hart, E.W., 1988, Fault-rupture zones in California; Alquist-Priolo Special 
Studies Zones Act of 1972 with index to special studies zones maps:  California 
Division of Mines and Geology Special Publication 42.

  Point_of_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Jonathan C. Matti
        Contact_Organization:
          U.S. Geological Survey, Western Region, Earth Surface Processes Team
      Contact_Position: Project geologist
      Contact_Address:
        Address_Type: mailing address
        Address:
          U.S. Geological Survey, 520 North Park Avenue, Rm 355
        City: Tucson
        State_or_Province: Arizona
        Postal_Code: 85719
        Country: United States of America
      Contact_Voice_Telephone: 520-670-5577
      Contact_Facsimile_Telephone: 520-670-5571
      Contact_Electronic_Mail_Address: jmatti@usgs.gov

  Data_Set_Credit:
    Photogrammetric geologic compilation:  The U.S. Geological Survey's 
Photogrammetric Plotter Laboratory in Denver, Colorado (James Messerich, 
photogrammetrist) provided Kern PG-2 stereographic plotters that enabled high-
precision, high-accuracy transfer of geologic linework and point data from 
aerial photographs to a scale-stable cartographic base.

    Gravity data collected by the Defense Mapping Agency (DMA)
    for the National Geodetic Survey and edited for this map
    (dma-edit.dat.txt).

    Gravity data collected by the Department of Geological Sciences
    at the University of California, Riverside since 1991 and
    edited for this map (new-ucr-edit.dat.txt").

    Gravity data collected by the U.S. Geological Survey since
    2000 (usgs-iso.dat.txt").

    Scientific peer review:  The geologic and geophysical maps and the geologic 
summary report benefited from technical reviews by W. Reeder (San Bernardino 
County Geologist) and G. Saucedo (California Geological Survey); faults were 
reviewed by J. Treiman (California Geological Survey).

    Digital database review:  The geologic database and metadata report were 
reviewed by E. Thom and K. Wheeler (U.S. Geological Survey).

    Programmatic Credit:  Geologic mapping, topical studies, and digital 
preparation for this database were sponsored jointly by the following:  (1) the 
U.S. Geological Survey's National Cooperative Geologic Mapping Program and 
Earthquake Hazards Program; (2) California Geological Survey; and (3) San 
Gorgonio Pass Water Agency, which provided funding for map production.
  Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) 
Service Pack 2; ESRI ArcCatalog 9.3.0.1770.  Geophysical data was stored and 
analyzed on a SUN Ultra4000 UNIX platform.

Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report:
      A combination of detailed and reconnaissance techniques was used to 
generate the geologic-map database for the El Casco quadrangle.  This yielded a 
data set whose quality necessarily varies from location to location. Some areas 
were examined in great detail in order to solve specific geologic problems, and 
to clarify the description or geologic relations of particular map units and 
their boundaries.  Other areas were examined less carefully or were not examined 
at all.  As a result, some parts of the El Casco data set have greater attribute 
accuracy and attribute confidence than do others.  These discrepancies are 
inherent to the methods by which geologic-map units and their boundaries are 
identified, and result from the quality and availability of outcrop and 
subsurface data, the time available to make the geologic map, and the experience 
and expertise of the map author.

      In this database, attribute accuracy is represented by two concepts:  
METHODOLOGICAL APPROACH and ATTRIBUTE CONFIDENCE.

      METHODOLOGICAL APPROACH

      The methodological-approach statement for the El Casco database has four 
elements:  (1) identification and spatial extrapolation of map units, (2) 
description and attribution of map units, (3) description of linear and planar 
geologic structures, and (4) reference standards for geologic nomenclature and 
science language.

      (1) Map-unit identification and spatial extrapolation:

      Geologic-map units in the El Casco database represent packages of earth 
material whose overall character differs sufficiently from other such packages 
that they constitute discrete mappable entities.  From the locality where a map 
unit initially was identified or defined, it was extended to other areas through 
a mapping process that includes (a) direct outcrop observation, (b) 
interpretation of subsurface boring logs, and (c) aerial-photographic 
interpretation.  The feature class "elcs_obs_points" shows observation stations 
where data used to make the map were collected by the map authors or by other 
investigators; the feature class "elcs_obs_lines" shows trench and pipeline 
excavations and seismic lines that also provided useful information. The 
distribution and density of data stations in these feature classes not only 
indicates where hands-on observation allowed identification and description of a 
map unit or map-unit boundary but also is a measure of the fidelity with which 
lines, points, and polygons in the database accurately represent actual geologic 
conditions.

      Map-unit boundaries (geologic contacts; in some cases faults) identified 
along mapping traverses typically were extended laterally by using aerial 
photographs and binoculars to project or extrapolate the boundary to its next 
identified occurrence along a nearby traverse; faults that cut the units were 
extended laterally in the same manner.  Only rarely were individual geologic 
contacts or fault lines walked out to determine their variability and character 
throughout the map area.  For surficial units, bounding contacts were plotted by 
using a Kern PG-2 photogrammetric plotter that allows location accuracy 
equivalent to the accuracy standard for the topographic-contour base.  Fault 
scarps were located using the same method.

      (2) Map-unit description and attribution:

      Geologic-map units in the El Casco database were described using standard 
field methods (see Process_Description 1 of 6).  Consistent with these methods 
and consistent with the time available to assemble the data set, the database 
authors have assigned standard scientific attributes to polygons that represent 
map units.

      (3) Description of line and point data

      In the El Casco database, certain kinds of geologic information are 
represented by lines and points that are displayed using standard cartographic 
symbols. Lines of various kinds trace the intersection of a planar geologic 
feature with the EarthÕs surface (for example, contacts and faults in the 
feature class "elcs_geolines"; fold axial surfaces in the feature class 
"elcs_geolines_folds").  The result is represented cartographically as a line.  
Points in the feature class "elcs_structurepoints" indicate a location where a 
structural measurement was made, either on a planar feature (for example, 
bedding surface, foliation surface) or on a linear geologic feature (for 
example, fold-hinge orientation, mineral lineation, fault-surface slickenline).  
Point data include the dip direction and dip amount of inclined planar surfaces 
(for example, contact, fault plane, fold axial surface) or the plunge direction 
and amount of linear elements.

      (4) Reference standards for geologic features:

      Sedimentary materials classification:  Sedimentary materials 
(unconsolidated sediment, sedimentary rock) are classified according to 
hierarchical schemes proposed by the North American Geologic-map Data Model 
Science Language Technical Team (2004a).  For all sedimentary materials, 
bedding-thickness classification follows Ingram (1954) and grain-size 
classification follows Wentworth (1922).

      Color classification:  The matrix color of surficial materials and their 
pedogenic soils is classified according to the Munsell soil-color charts 
(Munsell, 1975). Bedrock colors also are classified according to the Munsell 
system, supplemented by the Rock-Color Chart distributed by the Geological 
Society of America (reprinted 1970).

      Plutonic rock classification:  Plutonic rocks and their deformed 
equivalents are classified in accordance with the International Union of 
Geological Sciences Subcommission on the Systematics of Igneous Rocks (1973; 
Streckeisen, 1976) as implemented by the British Geological Survey (Gillespie 
and Styles, 1999).

      Metamorphic rock classification:  Metamorphic rocks are classified in 
accordance with the International Union of Geological Sciences Subcommission on 
the Systematics of Metamorphic rocks (Schmid and others, 2007) as implemented by 
the North American Geologic-map Data Model Science Language Technical Team 
(2004b).

      Terminology for slope-failure deposits (landslides and other slope-
movement types) follows Varnes (1978).

      In the ArcMap document "El_Casco_geology.mxd", geologic lines and points 
generally follow cartographic standards developed by the Federal Geographic Data 
Committee (2006). The FGDC standard briefly discusses the scientific meaning for 
each line and point, and also relates symbology to locational and scientific 
confidence. For geologic lines, feature type (fault, contact, fold axial 
surface) is indicated by line width (thick, thin), line color, and ornamentation 
(for example, solid or hollow triangles, squares, or annotation).  Locational 
confidence is indicated by line continuity (solid, dashed, dotted); scientific 
confidence (existence and identity) is indicated by question marks where 
uncertain.  For geologic points, the FGDC (2006) relates symbology to feature 
type (ornamentation) and feature geometry (for example, azimuth, dip, plunge).  
To assist the user in deciphering conceptual relations among various planar and 
linear geologic structures and geomorphic features identified as lines and 
points, the El Casco database package includes a .pdf userguide having an 
appendix containing flow charts that show how various attributes can be used to 
lump or split geologic and geomorphic features for purposes of broad or narrow 
database queries.

      ATTRIBUTE CONFIDENCE

      Two kinds of attribute confidence are represented in the El Casco 
database:  certainty of identity and certainty of existence.  These are two 
separate concepts.

      Certainty of identity:  The map makerÕs confidence that the identification 
of a geologic feature is correct and accords with widely accepted scientific 
standards (described under METHODOLOGICAL APPROACH).

      Certainty of existence:  The map makerÕs confidence that an identified 
geologic feature actually exists at the location indicated in the database.  
This may seem peculiar:  if the map maker indicates that a particular feature 
can be found at a particular location, surely it exists or the author would not 
have recorded it in the database.  This is not invariably the case, however. A 
geologist can make a speculative inference (educated guess) that a geologic 
feature exists where indicated, but may not be certain.

      Both identification certainty and existence certainty are expressed 
cartographically through the use of question marks.  In the database, 
identification certainty and existence certainty are indicated in separate data 
fields, using the values "certain", "probable but not confirmed", and 
"questionable".

      For geologic map units (polygons), an indirect measure of attribute 
confidence (especially map-unit identity) is the abundance or scarcity of 
observation stations in a specified polygon, as represented in the feature 
classes "elcs_obs_points" and "elcs_obs_lines".  No observation stations 
indicate that a map-unit identification more than likely is based on 
extrapolation (discussed under METHODOLOGICAL APPROACH). On the other hand, the 
greater the number of observation stations, the greater the confidence that a 
map unit is identified correctly and correlated appropriately with similar 
units.

      ATTRIBUTE ACCURACY FOR GEOPHYSICAL DATA:

      Observed gravity data are accurate to 0.05 mGal; reduced anomalies are 
accurate to 1-2 mGal.  Data are more accurate in the valleys than in the 
mountains because of uncertainties in elevation and in the terrain correction.

      Federal Geographic Data Committee [prepared for the Federal Geographic 
Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic 
standard for geologic map symbolization:  Reston, Va., Federal Geographic Data 
Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates, 
http://ngmdb.usgs.gov/fgdc_gds/geolsymstd/fgdc-geolsym-all.pdf

      Gillespie, M.R., and Styles, M.T., 1999, Classification of igneous rocks:  
Volume 1 of the BGS rock classification scheme: British Geological Survey 
Research Report Number RR 99-06, 52 p.

      Ingram, R.L., 1954, Terminology for the thickness of stratification and 
parting units in sedimentary rocks: Geological Society of America Bulletin, v. 
65, p. 937-938.

      International Union of Geological Sciences Subcommission on the 
Systematics of Igneous Rocks, 1973, Plutonic rocks:  Geotimes, v.  18, no. 10, 
p. 26-30.

      Munsell Color, 1975, Munsell soil color charts, 1975 edition:   Baltimore, 
Maryland, Macbeth Division of Kollmorgen Corporation.

      North American Geologic-map Data Model Science Language Technical Team, 
2004a, Sedimentary materials:  science language for their classification, 
description, and interpretation in digital geologic-map databases, Version 1.0 
(12/18/2004):  Draft report archived by the U.S. Geological Survey 
(http://pubs.usgs.gov/of/2004/1451/sltt/appendixC/), 595 p.

      North American Geologic-map Data Model Science Language Technical Team, 
2004b, Classification of metamorphic and other composite-genesis rocks, 
including hydrothermally altered, impact-metamorphic, mylonitic, and cataclastic 
rocks, Version 1.0 (12/18/2004):  Draft report archived by the U.S. Geological 
Survey (http://pubs.usgs.gov/of/2004/1451/sltt/appendixB/), 56 p.

      Schmid, R., Fettes, D., Harte, B., Davis, E., and Desmons, J., 2007, How 
to name a metamorphic rock:  Recommendations by the IUGS Subcommission on the 
Systematics of Metamorphic Rocks: Web version 01/02/07 
(www.bgs.ac.uk/scmr/home.html), 22 p.

      Streckeisen A., 1976, To each plutonic rock its proper name:  Earth 
Science Reviews, v. 12, p. 1-33.

      Varnes, D.J., 1978, Slope movement types and processes, in Schuster, R.L., 
and Krizek, R.J., eds., Landslides: analysis and control:  Washington, D.C., 
Transportation Research Board, National Academy of Sciences, Special Report 176, 
p. 11-33.

      Wentworth, C.K., 1922, A scale of grade and class terms for clastic 
sediments:  Journal of Geology, v. 30, p. 377-392.

  Logical_Consistency_Report:
    Polygon and chain-node topology present.

    The areal extent of the map is represented digitally by an appropriately 
projected (Universal Transverse Mercator projection), mathematically generated 
box.  Consequently, polygons intersecting the lines that comprise the map 
boundary are closed by that boundary.  Polygons internal to the map boundary are 
completely enclosed by line segments that are themselves a set of sequentially 
numbered coordinate pairs.  Point data are represented by coordinate pairs.
  Completeness_Report:
    The geologic map and digital database of the El Casco 7.5' quadrangle 
contain data that have been subjected to scientific peer review and are a 
substantially complete representation of the current state of knowledge (circa 
2009) concerning the geology of the quadrangle.

    Map-unit completeness:  Geologic-map units in the El Casco database are 
represented by polygons.  Each and every polygon not only has a unique ESRI ID, 
it also has a unique unit ID (mulabl) specifying its map-unit assignment and 
linking it to one or more database tables containing information about the 
physical characteristics, geologic age, and genesis of the map unit.  This 
information necessarily is synoptic because the characterization of each map 
unit is an average of all descriptions at individual observation stations---each 
of which is unique from other instances of the unit.  Hence, map-unit attributes 
at any one location may be slightly different from the map-unit description as a 
whole.  A comprehensive description of the lithotypes in each map unit can be 
found in the geologic summary report (ofr20101274_pamphlet.pdf) archived with 
the database package.

    Line and point completeness:  Each and every geologic line segment and 
geologic data point not only has a unique ESRI ID, it also has a unique 
identification tag (LTAG for lines, PTAG for points) linking it to database 
tables containing information about it.  The associated information includes the 
age of the geologic event represented by each line or point (for example, age of 
folding, faulting, tilting, metamorphic foliation) as well as each featureÕs 
position within a hierarchical classification that groups (or separates) line 
and point types based on such criteria as geologic origin, geologic role, 
geometry, structural class, and so forth. This hierarchy allows specific kinds 
of features to be grouped with, or separated from, other such features.

    Information about the specific orientation and geometry of lines (for 
example, faults, contacts, fold axial surfaces) and local structural features 
(for example, sedimentary bedding, metamorphic foliation, igneous foliation) is 
contained in the feature class "elcs_structurepoints".  Each data point has 
information about feature geometry (azimuth, dip, dip direction, plunge) entered 
directly into the database record for that feature.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report:
        In general, the geographic position of polygon, line, and point data for 
the El Casco quadrangle was not determined through the use of Global Positioning 
Satellite (GPS) methods.  Instead, most locations were determined by visual 
reference to hypsographic and planimetric elements of the cartographic basemap.  
The accuracy of such locational techniques depends on the quality of the 
basemap, on the expertise of the map maker, and the procedure by which the 
location was determined (for example, field estimate, transfer from aerial 
photographs by strictly visual means, or location by stereographic plotter or 
use of digital orthophoto imagery). 


        The Federal Geographic Data Committee (2006) concluded that no single 
Nationwide geologic-map accuracy standard for geologic line and point features 
can be adopted, for two reasons:  (1) the circumstances for each map area may 
differ due to vegetation cover, soil cover, and quality of topographic base---
factors that control the geologistÕs ability to locate geologic or geomorphic 
features accurately; and (2) the concept of "horizontal positional accuracy" 
means different things at different map scales.  Therefore, the FGDC recommends 
that each individual mapping agency or each individual map author should 
indicate the map-accuracy standard against which the locational fidelity of 
features in the database is compared.

        In the El Casco 1:24,000-scale database, geologic lines are judged to 
meet the map-accuracy standard if they are located to within + or - 15 meters 
relative to topographic or cultural features on the basemap.  Line data that 
qualify for this attribute are denoted in the data table "elcs_geolines_common" 
by the value "meets map accuracy standard"; line data that may not qualify for 
this standard are denoted by the entry "may not meet map accuracy standard" 
(although they might do so).  In "El_Casco_geology.mxd", solid lines denote data 
that are judged to meet the accuracy standard; dashed or dotted lines denote 
line data that may not meet the standard.

        In the database and on geologic-map plots, no cartographic procedure 
exists for denoting the map-accuracy for geologic-point data (symbols for 
bedding, foliation, lineations, and so forth).  Such features are assumed to 
"meet the map accuracy standard", and clearly do so where located by Global 
Positioning Satellite (GPS) methods.

        Positional errors for geologic elements in the El Casco database can 
arise from four sources:

        (1) Inaccuracies that may exist in the topographic basemap:  Though 
typically slight, hypsographic and planimetric errors in the basemap are not 
unusual and stem intrinsically from photogrammetric and aero-trigonometric 
techniques used to generate the basemaps.  The position of geologic objects 
located based on the topographic basemap necessarily will have the same degree 
of locational inaccuracy originally incorporated into the basemap.

        (2) Inaccuracies that result from visual transfer of field data to the 
cartographic basemap:  Such errors can result whether data points are located 
directly on the basemap using visual techniques, or whether they are located 
first on aerial photographs and then transferred to the basemap.  Inaccuracies 
stemming from the latter can be reduced through use of digital orthophoto 
imagery or through the use of stereographic plotters.  For the El Casco 
database, geologic contacts for surficial geologic units were transferred to 
scale-stable copies of the basemap through the use of a Kern PG-2 stereographic 
plotter that allows geologic elements to be located with an accuracy and 
precision equivalent to the standard for the topographic-contour base.  Fault 
scarps were positioned using the same procedure.

        (3) Scanner drift:  We determined that very slight but detectable 
discrepancies exist between iterative digital scans of the same manuscript 
source, or between scans of the same source using different digital scanning 
hardware.  Scanner drift can yield results that differ by a few meters, as can 
discrepancies caused by different hardware.

        (4) Positional uncertainty induced during digital data processing: This 
error arises from three sources: (a) variable transformation Root Mean Square 
(RMS) error during georeferencing of iterative digital manuscript scans. Even 
though we strived for a minimum RMS error of 0.003 (1.8 meters) during 
georeferencing, RMS errors ranged from 1.7 to 3.4; (b) operator error during 
data capture using a digitizing tablet; and (c) operator error during data 
capture using on-screen digitizing.  The horizontal positional accuracy of line 
and point entities was checked by visual comparison of hard-copy plots against 
scale-stable manuscript data.

        Positional errors vary for geophysical data in the El Casco database.  
Gravity stations occupied by the U.S. Geological Survey since 2000 ("usgs-
iso.dat.txt") were located using GPS technology and are accurate to within ~10 
m.  Gravity stations occupied by earlier investigations (DMA ["dma-
edit.dat,txt"] and U.C. Riverside ["new-ucr-edit.dat.txt"]) were located without 
GPS technology and have an accuracy of roughly 40 m.
    Vertical_Positional_Accuracy:
      Vertical_Positional_Accuracy_Report:
        Accuracy of the gravity point data vary; most of the elevations are 
accurate to 10 feet or less.  In some of the more mountainous areas, the 
accuracy may fall to 20 to 40 feet.
  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Geological Survey
          Publication_Date: 1967, photorevised 1980
          Title: Topographic basemap of the El Casco 7.5Õ quadrangle, California
          Geospatial_Data_Presentation_Form: map
          Publication_Information:
            Publication_Place: Reston, Virginia
            Publisher: U.S. Geological Survey
      Source_Scale_Denominator: 24000
      Type_of_Source_Media:
        Stable base material (greenline chronoflex, .007 mil clearfilm 
blackline)
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1967
        Source_Currentness_Reference: Topographic basemap
      Source_Citation_Abbreviation: USGS El Casco, 1967
      Source_Contribution:
        The El Casco topographic basemap is the reference standard by which the 
database authors located the position of observation stations and planar 
geologic features (for example, geologic contacts, faults, fold axes). Scale-
stable copies of the basemap also were used to transfer geologic information 
from aerial photographs to basemap using a Kern PG-2 stereographic plotter.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture, Agricultural Stabilization and 
Conservation Service
          Publication_Date: 1938

          Title:
            U.S. Department of Agriculture, Agricultural Stabilization and 
Conservation Service, 1938 photography (Symbol AXM, AXL)
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: Paper black-and-white aerial photographs
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1938
        Source_Currentness_Reference: 1938 date imprint on positive print
      Source_Citation_Abbreviation: ASCS 1938 photography (Symbol AXM, AXL)
      Source_Contribution: 

        The 1938 ASCS photography provides the most regionally extensive early-
vintage aerial images available for southern California, including the El Casco 
quadrangle.  The 1938 photography pre-dates much urbanization that obscures 
landform features, and thus was essential in identifying geologic and geomorphic 
features that over the last 60 years have been obliterated by human activities.  
The database authors used the 1938 photography to augment and revise 
observations made using other photographic series (see other source citations).
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            U.S. Department of Agriculture, Agricultural Stabilization and 
Conservation Service
          Publication_Date: 1952
          Title:
            U.S. Department of Agriculture, Agricultural Stabilization and 
Conservation Service, 1952 photography (Symbol AXM, AXL)
      Source_Scale_Denominator: 20000
      Type_of_Source_Media: Paper black-and-white aerial photographs
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1952
        Source_Currentness_Reference: 1952 date imprint on positive print
      Source_Citation_Abbreviation: ASCS 1952 photography (Symbol AXM, AXL)
      Source_Contribution:
        The ASCS photography provides systematic aerial-photographic coverage of 
the El Casco quadrangle and the rest of the Inland Empire region, along N-S 
flight lines.  This orientation contrasts with the typical E-W orientation of 
many other photographic series, and provides a different perspective of geologic 
and geomorphic features.  Because the 1952 photography pre-dates much 
urbanization that obscures landform features, it was helpful in identifying 
geologic and geomorphic features that over the last 50 years or so have been 
obliterated by human activities.  The database authors used the 1952 ASCS 
photography to augment and revise observations made using the 1975 Pictorial 
Crafts photography (see source citation below).
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: U.S. Department of Interior, Geological Survey
          Publication_Date: 1966
          Title:
            U.S. Department of Interior, Geological Survey 1966 photography 
(symbol GS-VBNS)
      Source_Scale_Denominator: 30000 (approximately)
      Type_of_Source_Media: Paper black-and-white aerial photographs
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1966
        Source_Currentness_Reference: 1966 date imprint on positive print
      Source_Citation_Abbreviation: USGS 1966 photography (symbol GS-VBNS)
      Source_Contribution:
        The USGS photography (symbol GS-VBNS) provides systematic aerial 
photographic coverage of the El Casco quadrangle and the rest of the Inland 
Empire region, along E-W flight lines.  Although their 1966 vintage post-dates 
some urbanization that obscures geologic features, moderate vertical 
exaggeration in this photo series enhances subtle geologic and geomorphic 
features not easily recognized in other photo series.  The database authors used 
the 1966 GS-VBNS photography to augment and refine observations made using the 
1975 Pictorial Crafts photography, and especially to delineate subtle features 
in the Calimesa and San Jacinto Valley areas.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator:
            Pictorial Crafts, Inc. (contracted to the U.S. Geological Survey)
          Publication_Date: 1975
          Title: Pictorial Crafts aerial photography
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: Paper true-color aerial photographs
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 00051975
            Ending_Date: 00061975
        Source_Currentness_Reference: 1975 date imprint on positive print
      Source_Citation_Abbreviation: Pictorial Crafts, Inc., 1975
      Source_Contribution:
        The Pictorial Crafts aerial photography provides true-color rendering of 
geologic and geomorphic features in the El Casco quadrangle and throughout the 
Inland Empire region.  The E-W flight lines were the primary aerial-photography 
resource used by the authors to locate the position of observation stations and 
to plot the positions of planar geologic features (geologic contacts, faults, 
fold axes).  Although their 1975 vintage post-dates much urbanization that 
obscures geologic features, the photography was helpful in recognizing geologic 
features whose color is a distinguishing characteristic.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Frick, C.
          Publication_Date: 1921
          Title:
            Frick, C., 1921, Extinct vertebrate faunas of the Badlands of 
Bautista Creek and San Timoteo Canon, southern California: Berkley, University 
of California Publications in Geology, v. 12, no. 5, p. 277-424.
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1921
        Source_Currentness_Reference:
          Publication data
          Time period of information content for geologic information in the 
report by Frick (1921) reflects the publication date for the report (1921)
      Source_Citation_Abbreviation: Frick (1921)
      Source_Contribution:
        The database authors consulted Frick (1921) to determine how he 
originally defined the lithologic makeup and boundary relations between the Mt. 
Eden and San Timoteo formations in the Mt. Eden area of the El Casco quadrangle.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: English, H.D.
          Publication_Date: 1953
          Title:
            English, H.D., 1953, The geology of the San Timoteo Badlands:  
Claremont, California, Pomona College, unpublished M.S. thesis, 159 p., scale 
1:24,000.
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1953
        Source_Currentness_Reference:
          Publication data
          Time period of information content for geologic information in the 
report by English (1953) reflects the date that the thesis was submitted to the 
University of California, Los Angeles and approved by the thesis committee
      Source_Citation_Abbreviation: English (1953)
      Source_Contribution:
        The database authors consulted English (1953) to determine how he 
interpreted the boundary interval between the Mt. Eden and San Timoteo 
formations of Frick (1921), and to determine how English interpreted folds and 
faults in the vicinity of the El Casco quadrangle.  None of the many structural 
point data collected by English was usable by the database authors because they 
are illegible on the circulating copy of the thesis.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Shuler, E.H.
          Publication_Date: 1953
          Title:
            Shuler, E.H., 1953, Geology of a portion of the San Timoteo Badlands 
near Beaumont, California:  Los Angeles, University of Southern California, 
unpublished M.S. Thesis, 106 p., scale 1:48,000.
      Source_Scale_Denominator: 48000
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1953
        Source_Currentness_Reference:
          Publication data
          Time period of information content for geologic information in the 
report by Shuler (1953) reflects the date that the thesis was submitted to the 
University of Southern California and approved by the thesis committee.
      Source_Citation_Abbreviation: Shuler (1953)
      Source_Contribution:
        The database authors consulted Shuler (1953) to determine how he 
interpreted the boundary interval between the Mt. Eden and San Timoteo 
formations of Frick (1921), and to determine how Shuler interpreted folds and 
faults in the vicinity of the El Casco quadrangle.  None of the many structural 
point data collected by Shuler was usable by the database authors because they 
are illegible on the circulating copy of the thesis.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Beyer, L.A.
          Publication_Date: 1959
          Title:
            Beyer, L.A., 1959, Geology of the vicinity of Mt. Eden, El Casco 
quadrangle, California:  Riverside, University of California, unpublished B.S. 
thesis, scale 1:24,000, 23 p.
      Source_Scale_Denominator: 24000
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:

          Single_Date/Time:
            Calendar_Date: 1959
        Source_Currentness_Reference:
          Publication data
          Time period of information content for geologic information in the 
report by Beyer (1959) reflects the date that the thesis was submitted to the 
faculty of the University of California, Riverside
      Source_Citation_Abbreviation: Beyer (1959)
      Source_Contribution:
        The database authors consulted Beyer (1959) to determine how he 
interpreted the boundary interval between the Mt. Eden and San Timoteo 
formations of Frick (1921), and to determine how he interpreted folds and faults 
in the vicinity of Mt. Eden.  The El Casco database incorporates a few of the 
many structural-point data collected by Beyer; these are designated in the data 
field "source" of the feature class "elcs_structurepoints".
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Blacet, P.M.
          Publication_Date: 1960
          Title:
            Blacet, P.M., 1960, Geology of the Lamb Canyon area, north of San 
Jacinto, California:  Riverside, University of California, unpublished B.S. 
thesis, scale 1:12,000, 41 p.
      Source_Scale_Denominator: 12000
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1960
        Source_Currentness_Reference:
          Publication data
          Time period of information content for geologic information in the 
report by Blacet (1960) reflects the date that the thesis was submitted to the 
faculty of the University of California, Riverside
      Source_Citation_Abbreviation: Blacet (1960)
      Source_Contribution:
        The database authors consulted Blacet (1960) to determine how he 
interpreted folds and faults in the vicinity of Mt. Eden, and how he mapped 
crystalline bedrock units.  The El Casco database incorporates a few of the many 
structural-point data collected by Blacet; these are designated in the data 
field "source" of the feature class "elcs_structurepoints".
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Larsen, N.R.
          Publication_Date: 1962
          Title:
            Larsen, N.R., 1962, Geology of the Lamb Canyon area, Beaumont, 
California:  Claremont, California, Pomona College, unpublished M.S. thesis, 93 
p., scale 1:12,000.
      Source_Scale_Denominator: 12000
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1962
        Source_Currentness_Reference:
          Publication data
          Time period of information content for geologic information in the 
report by Larsen (1962) reflects the date that the thesis was submitted to 
Pomona College and approved by the thesis committee.
      Source_Citation_Abbreviation: Larsen (1962)
      Source_Contribution:
        The database authors consulted Larsen (1962) to determine how he 
interpreted the boundary interval between the Mt. Eden and San Timoteo 
formations of Frick (1921) in the Laborde Canyon area, and to determine how 
Larsen interpreted folds and faults in the vicinity of the El Casco quadrangle.  
The El Casco database incorporates a few of the many structural-point data 
collected by Larsen; these are designated in the data field "source" of the 
feature class "elcs_structurepoints".
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Knecht, A.A.
          Publication_Date: 1971
          Title:
            Soil survey of western Riverside County area, California:  U.S. 
Department of Agriculture, Soil Conservation Service, 157 p., 214 pl., scale 
1:24,000.
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1971
        Source_Currentness_Reference:
          Time period of information content in the report by Knecht (1971) 
reflects the publication date for the report (1971)
      Source_Citation_Abbreviation: Knecht (1971)
      Source_Contribution:
        The database authors used soil maps compiled by Knecht (1971) in two 
ways: (1) to assign grain-size information to large area of surficial material 
not investigated in detail by us but represented by the soil-series units mapped 
by Knecht (1971); and (2) as a proxy for geologic age of surficial map units 
based on [our] inference that the soil-series represent a maturity series that 
has age connotations.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Langenheim, V.E., Chapman, R.H., Sikora, R.F., Ponce, 
D.A., and Dixon, E.T.
          Publication_Date: 1991
          Title:
            Isostatic residual gravity map of the Santa Ana 1:100,000-scale 
quadrangle, California: U.S. Geological Survey Open-File Report 91-555.
      Source_Scale_Denominator: 100000
      Type_of_Source_Media: digital (ascii), paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1950-1991
        Source_Currentness_Reference:
          Publication data
          Time period of information content reflects the time span over which 
the gravity data were collected by the cited investigators.
      Source_Citation_Abbreviation: Langenheim and others (1991)
      Source_Contribution:
        Gravity data archived by Langenheim and others (1991) were compiled into 
the gravity database for the El Casco quadrangle with slight editing to 
accommodate the 1:24,000 scale of the quadrangle.

    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Park, S.K., Pendergraft, D., Stephenson, W.J., Shedlock, 
K.M., and Lee, T-C.
          Publication_Date: 1995
          Title:
            Delineation of intrabasin structure in a dilational jog of the San 
Jacinto fault zone, southern California:  Journal of Geophysical Research, v. 
100, no. B1, p. 691-702.
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1995
        Source_Currentness_Reference:
          Time period of information content for geologic information in the 
report by Park and others (1995) reflects the publication date for the report 
(1995)
      Source_Citation_Abbreviation: Park and others (1995)
      Source_Contribution:
        The database authors used data and interpretations in Park and others 
(1995) to compare the distribution of faults recognized on the basis of surface 
evidence with the subsurface distribution of faults inferred on the basis of 
seismic profiling.
    Source_Information: 

      Source_Citation:
        Citation_Information:
          Originator: Lee, T-C., Biehler, S., Park, S.K., and Stephenson, W.J.
          Publication_Date: 1996
          Title:
            A seismic refraction and reflection study across the central San 
Jacinto Basin, Southern California: Geophysics, v. 61, no. 5, p. 1258-1268.
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1996
        Source_Currentness_Reference:
          Time period of information content for geologic information in the 
report by Lee and others (1996) reflects the publication date for the report 
(1996)
      Source_Citation_Abbreviation: Park and others (1995)
      Source_Contribution:
        The database authors used data and interpretations in Lee and others 
(1996) to compare the distribution of faults recognized on the basis of surface 
evidence with the subsurface distribution of faults inferred on the basis of 
seismic profiling.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Albright, L.B.
          Publication_Date: 1999
          Title:
            Magnetostratigraphy and biochronology of the San Timoteo Badlands, 
southern California, with implications for local Pliocene-Pleistocene tectonic 
and depositional patterns:  Geological Society of America Bulletin, v. 111, p. 
1265-1293.
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1999
        Source_Currentness_Reference:
          Publication data
          Time period of information content for geologic information in the 
report by Albright (1999) reflects the publication date for the report (1999)
      Source_Citation_Abbreviation: Albright (1999)
      Source_Contribution:
        The database authors consulted Albright (1999) to associate 
magnetostratigraphic and paleontologic data he collected with geologic-map 
information contained in the database.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Prothero, D.R.
          Publication_Date: 2001
          Title:
            Chronostratigraphic calibration of the Pacific Coast Cenozoic: a 
summary, in Prothero, D.R., ed., 2001, Magnetic stratigraphy of the Pacific 
Coast Cenozoic:  Pacific Section SEPM (Society for Sedimentary Geology), Book 
91, p. 377-394.
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2001
        Source_Currentness_Reference:
          Publication data
          Time period of information content for geologic information in the 
report by Prothero (2001) reflects the publication date for the report (2001)
      Source_Citation_Abbreviation: Prothero (2001)
      Source_Contribution:
        The database authors consulted Prothero (2001) as a standard reference 
for the historic and modern use of Pacific Coast Cenozoic chronostratigraphic 
units.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Langenheim, V.E., Lee, T.C., Biehler, Shawn, Jachens, 
R.C., and Morton, D.M.
          Publication_Date: 2006
          Title:
            Isostatic gravity map with geology of the Santa Ana 30' by 60' 
quadrangle, southern California: U.S. Geological Survey Scientific 
Investigations Map 2951
      Source_Scale_Denominator: 100000
      Type_of_Source_Media: digital (ascii), paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 1950-2006
        Source_Currentness_Reference:
          Publication data
          Time period of information content reflects the time span over which 
the gravity data were collected by the cited investigators.
      Source_Citation_Abbreviation: Langenheim and others (2006)
      Source_Contribution:
        Gravity data archived by Langenheim and others (2006) were compiled into 
the gravity database for the El Casco quadrangle with slight editing to 
accommodate the 1:24,000 scale of the quadrangle.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: McDougall, K.
          Publication_Date: 2008
          Title:
            California Cenozoic biostratigraphy--Paleogene, Chapter 4 in 
Petroleum Systems and Geologic Assessment of Oil and Gas in the San Joaquin 
Basin Province, California:  U.S. Geological Survey Professional Paper 1713, 56 
p.
      Type_of_Source_Media: paper
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 2008
        Source_Currentness_Reference:
          Publication data
          Time period of information content for geologic information in the 
report by McDougall (2008) reflects the publication date for the report (2008)
      Source_Citation_Abbreviation: McDougall (2008)
      Source_Contribution:
        The database authors consulted McDougall (2001) as a standard reference 
for the historic and modern use of Paleogene Pacific Coast marine 
chronostratigraphic units.
    Process_Step:
      Process_Description:
        Geologic mapping

        Geologic data for the El Casco quadrangle were collected in the field by 
the dataset authors.  Field data were plotted on aerial photographs and on a 
1:24,000-scale basemap (U.S. Geological Survey, El Casco 7.5-minute quadrangle, 
1967, photorevised, 1980).

        Bedrock map units were described, mapped, and interpreted on the basis 
of traverse-mapping methods.  Observations were recorded along each traverse, 
locations for which are stored in the file "elcs_obs_points"; many (but not all) 
of these locations also are represented in "elcs_structurepoints", as well as in 
"El_Casco_geology.mxd" and in the geologic-map plot by structural-attitude 
symbols. Map-unit boundaries (geologic contacts) and faults identified along 
each traverse typically were extended laterally by using aerial photographs and 
binoculars to project or extrapolate the contact or fault to its next identified 
occurrence along a nearby traverse.  A few sedimentary-layering attitudes were 
determined through binocular observation rather than from site determinations; 
these are identified in the database and on the geologic-map plot.

        Surficial-materials map units were described, mapped, and interpreted on 
the basis of aerial-photographic interpretation augmented by observations at 
field stations.  The bounding contacts of each surficial unit and the location 
of fault scarps that traverse the units were plotted by using a Kern PG-2 
stereographic plotter.

        The feature class "elcs_obs_points" stores the position of observation 
stations that were used to determine the distribution and characteristics of 
geologic-map units.

        GEOLOGIC CONTRIBUTIONS BY AUTHORS:

        Jonathan C. Matti -- Mapped and interpreted Tertiary and Quaternary 
sedimentary rocks and Quaternary surficial materials; mapped faults throughout 
the El Casco quadrangle; interpreted stratigraphic relations across the boundary 
interval between the Mt. Eden and San Timoteo formations of Frick (1921) -- 
1973-1974; 1991; 2006-2007

        Douglas M. Morton -- mapped crystalline rocks in the Mt. Eden area -- 
1977.
      Process_Date: 1973-2009
    Process_Step:
      Process_Description:
        Analog geologic-map preparation 


        An analog geologic map was produced by drafting linework onto a 
1:24,000-scale, right-reading, greenline scale-stable chronoflex manuscript of 
the El Casco 7.5' quadrangle; structural-point data also were drafted onto 
chronoflex. Source materials were paper field sheets produced by each map 
author, and pencil linework generated from aerial photographs using a PG-2 
stereographic plotter drawing on a 1:24,000-scale chronoflex manuscript of the 
quadrangle.
      Process_Date: 1986 through 2007
    Process_Step:
      Process_Description:
        Digital preparation of geologic-map information

        Analog geologic data on right-reading scale-stable greenline chronoflex 
was scanned at 300 dpi resolution using a ScannerGraphics CF500/44 scanner or a 
Hewlett-Packard DesignJet 815mfp scanner. The resulting raster file was 
georeferenced in ESRI ArcMap using a nearest-neighbor algorithm to an RMS-error 
goal of less than 3 meters.  The raster file was opened in ArcMap and the 
features represented on the raster were "heads-up" digitized onscreen at 
~1:3,000.  This resulted in high-fidelity data capture greater than the intended 
scale of usage, which was deemed appropriate in order to preserve the detailed 
shape of manuscript linework.  Digitizing was performed on various PC 
workstations models running Windows 2000 or Windows XP, and ArcGIS versions 8.1 
through 9.3

        CONTRIBUTIONS BY DATABASE EDITORS:

        Douglas M. Hirschberg -- responsible for final geologic database 
editing, assembling the database and plot-file products, and preparation of the 
metadata report

        Jordan G. Matti -- responsible for database editing (line and point 
revisions)

        Pamela M. Cossette -- responsible for original data capture and database 
editing
      Process_Date: 2003-2009
    Process_Step:
      Process_Description:
        Observation-station files "elcs_obs_points" and "elcs_obs_lines"

        The files "elcs_obs_points" and "elcs_obs_lines " contain the locations 
of observation stations that the dataset authors used to describe geologic 
materials and geologic structures in the El Casco quadrangle.  The feature 
classes were produced by locating on greenline chronoflex the location of 
geological observation stations occupied by the database authors and by previous 
workers, along with geotechnical borings and exploratory excavations executed by 
other workers.  The chronoflex was scanned and georeferenced, and the resulting 
raster data were digitized.

        Several kinds of observation data are recorded in the database:

        (1) Field observations made by the dataset authors:  These are indicated 
by the author's name (for example, Matti, J.C.) in the feature class item 
"source", and the station ID in the feature class item "pstat" (for example, 
JF035-04, which corresponds to Matti notebook "F", p. 35, station 4.).  Data 
point locations were defined by copying the structural-point data from 
"elcs_structurepoints", deleting non-relevant data fields, and using the same X-
Y locations.  "elcs_obs_points" also contains observation stations where no 
structural data were collected but where lithologic descriptions or other 
geologic observations were made (for example, outcrop photographs, rock-sample 
collections, paleocurrent measurements).

        (2) Subsurface borings obtained by the California Department of 
Transportation at overpass and underpass crossings along Interstate and State 
Highway system roadways.

        (3) Subsurface borings obtained by the California Department of Water 
Resources as part of pipeline investigations in the north part of the El Casco 
quadrangle (California Department of Water Resources, 1999);

        (4) Subsurface borings for water wells archived by the California State 
water-well system (as identified and located by Rewis and others, 2006);

        (5) Subsurface borings contracted by the U.S. Geological Survey's Water 
Resources Discipline (Rewis and others, 2006);

        (6) Trench logs described by various private geotechnical-engineering 
firms (CHJ, Inc., 1988, 2004; Rasmussen and Associates, 1988a, b; Petra 
Consultants, 2004);

        (7) Seismic-reflection and seismic-refraction transects conducted in the 
San Jacinto Valley (Park and others, 1995);

        (8) Soil-profile descriptions obtained by the Natural Resources 
Conservation Service (Knecht, 1971);

        (9) Subsurface-boring records from exploratory wells drilled in support 
of hydrocarbon exploration (referenced in Shuler, 1953)

        California Department of Water Resources, 1999, Geologic report, East 
Branch extension Phase 1:  Reach 3 Pipeline, Garden Air Creek to Noble Creek:  
State Water Facilities, Santa Ana Division, Project Geology Report D-154, 
December, 1999, 17 p., 4 pl.

        CHJ Inc., 1988, Geotechnical evaluation of younger alluvium (Qal), Oak 
Valley Project, Riverside County, California, Job No. 88585-3:  unpublished 
consulting report on file with Riverside County Planning Department.

        CHJ Inc, 2004, Subsurface investigation of faulting, tentative Tract No. 
30545 east of Singleton Road and Calimesa Boulevard, Calimesa, California:  
unpublished consulting report on file with Riverside County Planning Department, 
29 p.

        Knecht, A.A., 1971, Soil survey of western Riverside County area, 
California:  U.S. Department of Agriculture, Soil Conservation Service, 157 p., 
214 pl., scale 1:24,000.

        Park, S.K., Pendergraft, D., Stephenson, W.J., Shedlock, K.M., and Lee, 
T-C., 1995, Delineation of intrabasin structure in a dilational jog of the San 
Jacinto fault zone, southern California: Journal of Geophysical Research, v. 
100, no. B1, p. 691-702.

        Petra Consultants, 2004, Fault investigation, Oak Valley at Calimesa, 
Riverside County, California:  unpublished consulting report on file with 
Riverside County Planning Department, 16 p, many appendices and map plates.

        Rasmussen, G.S., and Associates, 1988a, Engineering geology 
investigation tentative Tract 9209, Lots 1-337, San Bernardino County, 
California:  unpublished consulting report on file with Riverside County 
Planning Department, 29 p.

        Rasmussen, G.S., and Associates, 1988b, Preliminary engineering geology 
investigation, Oak Valley Project, 6725 acres southwest of Interstate 10, 
northern Riverside County, California:  Project No. 2529.1, August 9, 1988:  
unpublished consulting report on file with Riverside County Planning Department, 
36 p. with many figures.

        Rewis, D.L. Christensen, A.H., Matti, J.C., Hevesi, J.A., Nishikawa, T., 
and Martin, P.M., 2006, Geology, ground-water hydrology, geochemistry, and 
ground-water simulation of the Beaumont and Banning storage units, San Gorgonio 
Pass area, Riverside County, California:  U.S. Geological Survey Scientific 
Investigations Report 2006-5026, 173 p.

        Shuler, E.H., 1953, Geology of a portion of the San Timoteo Badlands 
near Beaumont, California:  Los Angeles, University of Southern California, 
unpublished M.S. Thesis, 106 p., scale 1:48,000.
      Process_Date: 2009
    Process_Step:
      Process_Description:
        Digital processing of Topographic Basemap

        The basemap image ("ec_topo.tif") was prepared by scanning a scale-
stable, right-reading, .007-mil clear-film blackline positive of the U.S. 
Geological Survey, 1:24,000-scale El Casco 7.5' quadrangle topographic map 
(1967, photorevised, 1980).  Scanning was done using an Anatech Eagle 4080 
monochrome 800 dots-per-inch scanner at a resolution of 500 dpi.  The raster 
scan was converted to a monochromatic image in ARC/INFO.  No elements of the 
base layer are attributed.  The basemap is provided for reference only.

  Process_Date:  2007-2008
    Process_Step:
      Process_Description:
        Geophysical mapping

        Gravity data were compiled from existing publications (Langenheim and 
others, 1991, 2006) and were edited for analysis and presentation at the 
1:24,000 scale of the map. Data in the ASCII files ("old-edited.dat.txt"; "dma-
edit.dat,txt"; "new-ucr-edit.dat.txt;" "usgs-iso.dat.txt") contain the principal 
facts of the gravity stations, with one measurement point (gravity station) 
coded per line.  The data were gridded at an interval of 250 m and contoured to 
produce gravity contours on the map.  Horizontal maximum gradients were 
calculated with the gridded data and are also provided.

        Each gravity station has a station name, location (latitude and 
longitude, NAD27 datum), elevation, and an observed gravity value, followed by 
free-air, Bouguer, and isostatic anomalies and terrain correction values. The 
data are on the IGSN71 gravity datum and the reference ellipsoid is the Geodetic 
Reference System 1967 (GRS67). The free-air gravity anomalies were calculated 
using standard formulas (Telford and others, 1976).  The Bouguer, curvature, and 
terrain corrections were applied to the free-air anomaly at each station to 
determine the complete Bouguer gravity anomalies at a reduction density of 2670 
kg/m3 (Plouff, 1977). An isostatic correction was then applied to remove the 
long-wavelength effect of deep crustal and/or upper-mantle masses that 
isostatically support regional topography (Jachens and Roberts, 1981).

        Blakely, R.J., and Simpson, R.W., 1986, Approximating edges of source 
bodies from magnetic or gravity anomalies: Geophysics, v. 51, p. 1494-1498.

        Jachens, R.C., and Roberts, C.W., 1981, Documentation of a Fortran 
program, 'ISOCOMP', for computing isostatic residual gravity:  U.S. Geological 
Survey Open-File Report 81-574, 26 p.

        Langenheim, V.E., Chapman, R.H., Sikora, R.F., Ponce, D.A., and Dixon, 
E.T., 1991, Isostatic residual gravity map of the Santa Ana 1:100,000-scale 
quadrangle, California: U.S. Geological Survey Open-File Report 91-555.

        Langenheim, V.E., Lee, T.C., Biehler, Shawn, Jachens, R.C., and Morton, 
D.M., 2006,  Isostatic gravity map with geology of the Santa Ana 30' by 60' 
quadrangle, southern California:  U.S. Geological Survey Scientific 
Investigations Map 2951, scale 1:100,000, 25 p. 
[http://pubs.usgs.gov/sim/2006/2951].

        Plouff, Donald, 1977, Preliminary documentation for a FORTRAN program to 
compute gravity terrain corrections based on topography digitized on a 
geographic grid: U.S. Geological Survey Open-File Report 77-535, 45 p.

        Telford, W.M., Geldart, L.O., Sheriff, R.E., and Keyes, D.A., 1976, 
Applied geophysics:  New York, Cambridge University Press, 960 p.

  Process_Date:  2009, 2013
    Process_Step:
      Process_Description:
        Metadata documentation for version 1.0 of the El Casco geologic database 
was prepared by Douglas M. Hirschberg using ArcGIS 9.3 ArcCatalog, 


Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
  Point_and_Vector_Object_Information:
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: G-polygon
      Point_and_Vector_Object_Count: 1011
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: G-polygon
      Point_and_Vector_Object_Count: 49
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: G-polygon
      Point_and_Vector_Object_Count: 16
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: String
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    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: String
      Point_and_Vector_Object_Count: 123
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: G-polygon
      Point_and_Vector_Object_Count: 236
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: G-polygon
      Point_and_Vector_Object_Count: 1529
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: String
      Point_and_Vector_Object_Count: 1
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: G-polygon
      Point_and_Vector_Object_Count: 33
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: G-polygon
      Point_and_Vector_Object_Count: 10
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: String
      Point_and_Vector_Object_Count: 8
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Entity point
      Point_and_Vector_Object_Count: 1107
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Entity point
      Point_and_Vector_Object_Count: 52
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Entity point
      Point_and_Vector_Object_Count: 1015
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Grid_Coordinate_System:
        Grid_Coordinate_System_Name: Universal Transverse Mercator
        Universal_Transverse_Mercator:
          UTM_Zone_Number: 11
          Transverse_Mercator:
            Scale_Factor_at_Central_Meridian: 0.999600
            Longitude_of_Central_Meridian: -117.000000
            Latitude_of_Projection_Origin: 0.000000
            False_Easting: 500000.000000
            False_Northing: 0.000000
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: coordinate pair
        Coordinate_Representation:
          Abscissa_Resolution: 0.000100
          Ordinate_Resolution: 0.000100
        Planar_Distance_Units: meters
    Geodetic_Model:
      Horizontal_Datum_Name: North American Datum of 1983
      Ellipsoid_Name: Geodetic Reference System 80
      Semi-major_Axis: 6378137.000000
      Denominator_of_Flattening_Ratio: 298.257222
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_dip_anno
      Entity_Type_Definition:  A spatial dataset of dip and plunge values for 
structure points
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: SHAPE
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:

      Attribute_Label: FeatureID
    Attribute:
      Attribute_Label: ZOrder
    Attribute:
      Attribute_Label: AnnotationClassID
    Attribute:
      Attribute_Label: Element
    Attribute:
      Attribute_Label: SymbolID
    Attribute:
      Attribute_Label: Status
    Attribute:
      Attribute_Label: TextString
      Attribute_Definition: dip value
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: FontName
    Attribute:
      Attribute_Label: FontSize
    Attribute:
      Attribute_Label: Bold
    Attribute:
      Attribute_Label: Italic
    Attribute:
      Attribute_Label: Underline
    Attribute:
      Attribute_Label: VerticalAlignment
    Attribute:
      Attribute_Label: HorizontalAlignment
    Attribute:
      Attribute_Label: XOffset
    Attribute:
      Attribute_Label: YOffset
    Attribute:
      Attribute_Label: Angle
    Attribute:
      Attribute_Label: FontLeading
    Attribute:
      Attribute_Label: WordSpacing
    Attribute:
      Attribute_Label: CharacterWidth
    Attribute:
      Attribute_Label: CharacterSpacing
    Attribute:
      Attribute_Label: FlipAngle
    Attribute:
      Attribute_Label: Override
    Attribute:
      Attribute_Label: SHAPE_Length
      Attribute_Definition: Length of feature in internal units.
      Attribute_Definition_Source: ESRI 

      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically 
generated.
    Attribute:

      Attribute_Label: SHAPE_Area
      Attribute_Definition: Area of feature in internal units squared.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically 
generated.
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_fault_anno
      Entity_Type_Definition:  A spatial dataset of fault name annotation
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: FeatureID
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: ZOrder
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: AnnotationClassID
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Element
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: SymbolID
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Status
      Attribute_Definition_Source: ESRI

    Attribute:
      Attribute_Label: TextString
      Attribute_Definition: fault name
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: FontName
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: FontSize
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Bold
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Italic
      Attribute_Definition_Source: ESRI
    Attribute:

      Attribute_Label: Underline
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: VerticalAlignment
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: HorizontalAlignment
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: XOffset
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: YOffset
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Angle
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: FontLeading
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: WordSpacing
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: CharacterWidth
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: CharacterSpacing
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: FlipAngle
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Override
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Shape_Length
      Attribute_Definition: Length of feature in internal units.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically 
generated.
    Attribute:
      Attribute_Label: Shape_Area
      Attribute_Definition: Area of feature in internal units squared.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically 
generated.
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_fold_anno
      Entity_Type_Definition:  A spatial dataset of fold name annotation
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: SHAPE
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: FeatureID
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: ZOrder
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: AnnotationClassID
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Element
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: SymbolID
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Status
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: TextString
      Attribute_Definition: fold name
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: FontName
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: FontSize
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Bold
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Italic
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Underline
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: VerticalAlignment
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: HorizontalAlignment
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: XOffset
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: YOffset
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Angle
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: FontLeading
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: WordSpacing
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: CharacterWidth
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: CharacterSpacing
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: FlipAngle
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Override
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: SHAPE_Length
      Attribute_Definition: Length of feature in internal units.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically 
generated.
    Attribute:
      Attribute_Label: SHAPE_Area
      Attribute_Definition: Area of feature in internal units squared.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically 
generated.
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_geolines
      Entity_Type_Definition:  A spatial dataset of geologic-structure lines 
(excluding fold axes); lines that form map-unit polygons
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: SHAPE
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: feature
      Attribute_Definition: Abbreviated identification of each geologic line 
type, enabling the object to be identified without reference to associated 
tables
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: name
      Attribute_Definition: The formal name of a mapped geologic structure, or 
an informal designation uniquely associated with features that are not formally 
named
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: agemin
      Attribute_Definition: Minimum age of a geologic structure (the minimum age 
at which a structure stopped forming)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: agemax
      Attribute_Definition: Maximum age of a geologic structure (the maximum age 
at which a structure began to form)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ageconf
      Attribute_Definition: Confidence in the minimum and maximum ages assigned 
to a geologic structure
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: agebasis
      Attribute_Definition: The basis for assigning a minimum and maximum age to 
a geologic structure 
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: lineuniq
      Attribute_Definition: Unique attributes associated with a specified line 
segment or series of line segments, not shared by other segments
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: source
      Attribute_Definition: The source for each line segment in the database, 
either a database author or a compiled source
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ltag
      Attribute_Definition:  Primary key linking mapped geologic lines to 
associated database tables
      Attribute_Definition_Source: report authors
    Attribute:

      Attribute_Label: linesym
      Attribute_Definition: Code linking a geologic structure to its style used 
for cartographic display
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SHAPE_Length
      Attribute_Definition: Length of feature in internal units.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically 
generated.
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_geolines_folds
      Entity_Type_Definition:  A spatial dataset of geologic lines that trace  
the intersection of a fold axial surface with the ground surface
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: SHAPE
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: feature
      Attribute_Definition: Abbreviated identification of each geologic line 
type, enabling the object to be identified without reference to associated 
tables
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: name
      Attribute_Definition: The formal name of a mapped fold, or an informal 
designation uniquely associated with folds that are not formally named
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: agemin
      Attribute_Definition: Minimum age of a fold (the minimum age at which the 
fold stopped forming)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: agemax
      Attribute_Definition: Maximum age of a fold (the maximum age at which the 
fold began to form)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ageconf
      Attribute_Definition: Confidence in the minimum and maximum ages assigned 
to a fold
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: agebasis
      Attribute_Definition: The basis for assigning a minimum and maximum age to 
a fold
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: lineuniq
      Attribute_Definition: Unique attributes associated with a specified line 
segment or series of line segments, not shared by other segments
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: source
      Attribute_Definition: The source for each line segment in the database, 
either a database author or a compiled source
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ltag
      Attribute_Definition:  Primary key linking mapped geologic lines to 
associated database tables
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: linesym
      Attribute_Definition: Code linking a geologic structure to its style used 
for cartographic display
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SHAPE_Length
      Attribute_Definition: Length of feature in internal units.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically 
generated.
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_mapunit_anno
      Entity_Type_Definition:  A spatial dataset of map-unit label annotation 
for selected polygons
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: FeatureID
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: ZOrder
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: AnnotationClassID
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Element
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: SymbolID
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Status
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: TextString
      Attribute_Definition: mulabl value
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: FontName
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: FontSize
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Bold
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Italic
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Underline
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: VerticalAlignment
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: HorizontalAlignment
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: XOffset
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: YOffset
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Angle
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: FontLeading
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: WordSpacing
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: CharacterWidth
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: CharacterSpacing
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: FlipAngle
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Override
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Shape_Length
      Attribute_Definition: Length of feature in internal units.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically 
generated.
    Attribute:
      Attribute_Label: Shape_Area
      Attribute_Definition: Area of feature in internal units squared.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically 
generated.
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_mapunit_polys
      Entity_Type_Definition:  A spatial dataset of geologic map-unit polygons
      Entity_Type_Definition_Source: report authors by rules developed and 
adjudicated by the North American Commission on Stratigraphic Nomenclature 
(NACSN, 1983, 2005).
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: SHAPE
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: mulabl
      Attribute_Definition: Alpha-numeric symbol that corresponds with the 
formal or informal name of each geologic-map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: crustal
      Attribute_Definition: Classification category into which a geologic-map 
unit is grouped according to its position on or in the Earth's crust; used to 
lump map units into generalized categories
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: muconf
      Attribute_Definition: Confidence the database authors have in the 
identification of each map-unit polygon
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: polyuniq
      Attribute_Definition: Unique attributes associated with a specified 
geologic map-unit polygon or series of polygons, but not shared by other 
polygons of the same map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: source
      Attribute_Definition: The source for each geologic polygon in the 
database, either a database author or a compiled source
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: mutag
      Attribute_Definition: Primary key linking each geologic map-unit polygon 
to associated database tables
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: plotlabl
      Attribute_Definition: Plotting label (same as mulabl, except where special 
font characters are required)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SHAPE_Length
      Attribute_Definition: Length of feature in internal units.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically 
generated.
    Attribute:

      Attribute_Label: SHAPE_Area
      Attribute_Definition: Area of feature in internal units squared.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically 
generated.
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_morph_lines
      Entity_Type_Definition:  A spatial dataset of linear geomorphic features
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: SHAPE
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: feature
      Attribute_Definition: Abbreviated identification of each geologic line 
type, enabling the object to be identified without reference to associated 
tables
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: name
      Attribute_Definition: The formal name of a mapped geomorphic feature, or 
an informal designation uniquely associated with features that are not formally 
named
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: idconf
      Attribute_Definition: Confidence that a geomorphic feature represented by 
a line has been identified correctly 
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: agemin
      Attribute_Definition: Minimum age of a geomorphic feature (the minimum age 
at which the feature stopped forming)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: agemax
      Attribute_Definition: Maximum age of a geomorphic feature (the maximum age 
at which the feature began to form)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ageconf
      Attribute_Definition: Confidence in the minimum and maximum ages assigned 
to a geomorphic feature
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: agebasis
      Attribute_Definition: The basis for assigning a minimum and maximum age to 
a geomorphic feature
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: lineuniq
      Attribute_Definition: Unique attributes associated with a specified line 
segment or series of line segments, not shared by other segments
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: source
      Attribute_Definition: The source for each geomorphic line in the database, 
either a database author or a compiled source
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ltag
      Attribute_Definition: Primary key linking mapped geomorphic objects to 
database tables
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: linesym
      Attribute_Definition: Code linking a geomorphic feature to its style used 
for cartographic display
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SHAPE_Length
      Attribute_Definition: Length of feature in internal units.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically 
generated.
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_morph_polys
      Entity_Type_Definition:  A spatial dataset of geomorphic polygons
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: SHAPE
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: morphname
      Attribute_Definition: Formal or informal map-unit name that corresponds to 
the indicated unit label (morphlabl)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: muconf
      Attribute_Definition: Confidence the database author has in the 
identification of each map-unit polygon
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: polyuniq
      Attribute_Definition: Unique attributes associated with a specified 
polygon or series of polygons, not shared by other polygons
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: source
      Attribute_Definition: The source for each geomorphic polygon in the 
database, either a database author or a compiled source
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: morphlabl
      Attribute_Definition: Alpha-numeric symbol that corresponds with the 
formal or informal name of each geomorphic-map unit; also is a primary key 
linking each geomorphic polygon to associated database tables
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: plotlabl
      Attribute_Definition: Plotting label (same as morphlabl, except where 
special characters are required)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SHAPE_Length
      Attribute_Definition: Length of feature in internal units.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically 
generated.

    Attribute:
      Attribute_Label: SHAPE_Area
      Attribute_Definition: Area of feature in internal units squared.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically 
generated.
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_obs_anno
      Entity_Type_Definition:  A spatial dataset of identifier annotation for 
observation lines and points (stations)
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: SHAPE
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: FeatureID
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: ZOrder
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: AnnotationClassID
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Element
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: SymbolID
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Status
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: TextString
      Attribute_Definition: station identifier
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: FontName
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: FontSize
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Bold
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Italic
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Underline
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: VerticalAlignment
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: HorizontalAlignment
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: XOffset
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: YOffset
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Angle
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: FontLeading
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: WordSpacing
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: CharacterWidth
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: CharacterSpacing
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: FlipAngle
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: Override
      Attribute_Definition_Source: ESRI
    Attribute:
      Attribute_Label: SHAPE_Length
      Attribute_Definition: Length of feature in internal units.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically 
generated.
    Attribute:
      Attribute_Label: SHAPE_Area
      Attribute_Definition: Area of feature in internal units squared.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically 
generated.
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_obs_lines
      Entity_Type_Definition:  A spatial dataset showing the extent of trenches, 
seismic lines, and pipeline routes that the database authors used to make the 
geologic map
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: SHAPE
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: feature
      Attribute_Definition: Abbreviated identification of each observation line 
type, enabling identification without reference to associated tables
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: lstat
      Attribute_Definition:  Alphanumeric code uniquely assigning each 
observation line a station identification
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: source
      Attribute_Definition: The source for each observation line in the 
database, either a database author or a compiled source
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: linesym
      Attribute_Definition: Code linking an observation line to its style (line 
symbol) used for cartographic display
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SHAPE_Length
      Attribute_Definition: Length of feature in internal units.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically 
generated.
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_obs_points
      Entity_Type_Definition:  A spatial dataset of point observations that the 
database authors used to make the geologic map
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: SHAPE
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: feature
      Attribute_Definition: Abbreviated identification of each observation 
point, enabling the point to be identified without reference to associated 
tables
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: pstat
      Attribute_Definition: Alphanumeric code uniquely assigning each 
observation point a station identification
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: depthft
      Attribute_Definition: Information about the total subsurface depth to 
which a boring penetrated
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: depthbmft
      Attribute_Definition: Information about the subsurface depth at which a 
boring penetrated hard basement rock
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: source
      Attribute_Definition: The source for each observation point in the 
database, either a database author or a compiled source
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: symazim
      Attribute_Definition: The angular value that cartographic styles for 
observation points must be rotated in order to display correctly relative to the 
point's actual orientation
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: pntsym
      Attribute_Definition: Code linking an observation point to its style 
(point symbol) used for cartographic display
      Attribute_Definition_Source: report authors
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_orn_points
      Entity_Type_Definition: A spatial dataset of point annotation 
(ornamentation points) associated with certain kinds of geologic lines and used 
for cartographic display
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: SHAPE
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: feature
      Attribute_Definition: Abbreviated identification of each ornamentation 
point, enabling the point to be identified without reference to associated 
tables
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: symazim
      Attribute_Definition: the angular bearing of a symbol for proper rotation
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: pntsym
      Attribute_Definition: Code linking an cartographic ornament point to its 
style used for cartographic display
      Attribute_Definition_Source: report authors
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_structurepoints 
      Entity_Type_Definition:  A spatial dataset of quantitative structural data 
that represent the three-dimensional orientation of geologic structures (for 
example, bedding orientation, foliation orientation, fault-dip amount), and that 
can be used for quantitative spatial analysis
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: SHAPE
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: feature
      Attribute_Definition: Abbreviated identification of each geologic point 
type, enabling the object to be identified without reference to associated 
tables
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: idconf
      Attribute_Definition: Confidence that a geologic structure has been 
identified correctly
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: strike
      Attribute_Definition: The direction or trend taken by a structural 
surface, for example, a bedding or fault plane, as it intersects the horizontal.  
Recorded as azimuthal degrees between 1 degree and 360 degrees, with 360 degrees 
representing North.  Follows the right-hand rule
      Attribute_Definition_Source: Glossary of Geology (Jackson, 1997, p. 631)
    Attribute:
      Attribute_Label: dip
      Attribute_Definition: The maximum angle that a structural surface, fir 
example, bedding or a fault plane, makes with the horizontal; measured 
perpendicular to the strike of the structure and in the vertical 
plane...Recorded as degrees between 0 degrees and  90 degrees, with overturned 
beds dipping in the direction of overturning by the amount indicated
      Attribute_Definition_Source: Glossary of Geology (Jackson, 1997, p. 631)
    Attribute:
      Attribute_Label: dipdir
      Attribute_Definition: The direction in which a geologic surface or 
geologic foliation dips, perpendicular to the strike of the structure. Recorded 
as azimuthal degrees between 1 degree and 360 degrees, with 360 degrees 
representing true North
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: bearing
      Attribute_Definition: The direction in which a linear geologic structure 
plunges.  Recorded as azimuthal degrees between 1 degree and 360 degrees, with 
360 degrees representing true North
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: plunge
      Attribute_Definition: The angle between a linear structure, for example, 
fold hinge, slip lineation, mineral lineation, and the horizontal as measured in 
the vertical plane containing the [lineation]
      Attribute_Definition_Source: Glossary of Geology (Jackson, 1997, p. 495)
    Attribute:
      Attribute_Label: rakeazim
      Attribute_Definition: Provides information about the orientation of a line 
on a plane (as in the rake of a slickenline on a fault plane).  Rake is the 
angle between a line and the strike of the plane in which it occurs.
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: agemin
      Attribute_Definition: Minimum age of a geologic structure represented by a 
structure-point measurement (the minimum age at which the structure stopped 
forming)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: agemax
      Attribute_Definition: Maximum age of a geologic structure represented by a 
structure-point measurement (the maximum age at which the structure began to 
form)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ageconf
      Attribute_Definition: Confidence in the minimum and maximum deformation 
ages assigned to a geologic structure
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: agebasis
      Attribute_Definition: The basis for assigning a minimum and maximum age to 
a geologic structure
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: pntuniq
      Attribute_Definition: Unique attributes associated with a specified 
structural point
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: source
      Attribute_Definition: The source for each geologic point in the database, 
either a database author or a compiled source
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ptag
      Attribute_Definition: Primary key linking mapped geologic objects to 
database tables
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: symazim
      Attribute_Definition: The angular value by which a cartographic style must 
be rotated in order to display correctly relative to a structural feature's 
actual azimuth or bearing
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: pntsym
      Attribute_Definition: Code linking a geologic structure to its style used 
for cartographic display
      Attribute_Definition_Source: report authors
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_geolines_common
      Entity_Type_Definition:  A non-spatial table containing geologic 
information common to all geologic line types (contacts, faults, fold axial 
surfaces, fractures)
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: SUMMARY
      Attribute_Definition: A semi-complete summary of geologic and cartographic 
concepts represented by a line type; a comma-delimited string of values, each of 
which occurs singly in other items in elcs_geolines_common where the value can 
be selected for (queried) individually
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: CATEGORY
      Attribute_Definition: The principal category to which a structural object 
belongs
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: GEOMETRY

      Attribute_Definition: The principal spatial geometry of a geologic 
structure
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: STRUCLASS
      Attribute_Definition: The principal grouping to which a geologic structure 
belongs
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ROLE
      Attribute_Definition: The functional role played by a geologic structure
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: TYPE
      Attribute_Definition: The specific type of geologic structure represented 
by a geologic object
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ORIGIN
      Attribute_Definition: The origin of a geologic structure in terms of 
geologic process
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: IDCONF
      Attribute_Definition: Confidence that a geologic structure has been 
identified correctly
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: EXISTCONF
      Attribute_Definition: Confidence that a geologic structure exists at the 
location indicated
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBSERV
      Attribute_Definition: Indicates whether an object specified in the 
database can be observed in the field
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ACCURACY
      Attribute_Definition: Degree to which the X,Y position of an object on the 
basemap and in the geodatabase metrics corresponds to its actual location in the 
field
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: LTAG
      Attribute_Definition: Primary key linking mapped geologic objects to 
database tables
      Attribute_Definition_Source: report authors
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_geolines_contacts_uniq
      Entity_Type_Definition:  A non-spatial table of additional geologic 
information unique to contacts
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: CONTYPE
      Attribute_Definition: Information about the specific type of geologic 
contact (e.g., sedimentary contact, unconformable)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: CONTRANS
      Attribute_Definition: The nature of the contact transition interval 
between a geologic-map unit and adjacent map units
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: LTAG
      Attribute_Definition: Primary key linking mapped geologic objects to 
database tables
      Attribute_Definition_Source: report authors
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_geolines_faults_uniq
      Entity_Type_Definition:  A non-spatial table of geologic information 
unique to faults
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: FAULTGEOM
      Attribute_Definition: The orientation of a fault plane at the time it was 
generating movement:  high-angle describes fault planes that are steeper than 45 
degrees; low-angle describes fault planes that are inclined 45 degrees or 
shallower; variable-angle describes fault planes whose inclination varies either 
systematically or irregularly as the fault plane is traced throughout the map 
area
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SLIPTYPE
      Attribute_Definition: The style of movement along the fault plane
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: FAULTTYPE

      Attribute_Definition: The specific fault type assigned to structures 
having a particular geometry and slip-style.  Includes:  generic fault, strike-
slip fault (right lateral and left lateral), normal fault, reverse fault, low 
angle fault (normal and reverse), and rotational fault
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: WALLREL
      Attribute_Definition: The relative age of earth materials in the hanging 
wall of a low-angle fault.  Values:  younger over older, older over younger
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: LTAG
      Attribute_Definition: Primary key linking mapped geologic objects to 
database tables
      Attribute_Definition_Source: report authors
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_geolines_folds_uniq
      Entity_Type_Definition:  A non-spatial table of geologic information 
unique to fold axial surfaces
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: FOLDMORPH
      Attribute_Definition: Indicates whether the facing direction of a mapped 
fold has been determined (or not)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: FOLDTYPE
      Attribute_Definition: The specific fold type, based on combinations of 
attributes indicated in FOLDMORPH, PLANEGEOM, and HINGEGEOM
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: PLANEGEOM
      Attribute_Definition: Refers to the orientation of a fold's axial surface 
relative to a vertical datum
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: HINGEGEOM
      Attribute_Definition: Refers to the orientation of a fold's hinge relative 
to a horizontal datum
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: LTAG
      Attribute_Definition: Primary key linking mapped geologic objects to 
database tables
      Attribute_Definition_Source: report authors
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_geolines_fractures_uniq
      Entity_Type_Definition:  A non-spatial table of additional geologic 
information unique to fractures
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: FRACTYPE
      Attribute_Definition: The specific type of fracture (joint, crack, 
fissure)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: FRACORIG
      Attribute_Definition: The geologic origin of the specific type of joint or 
crack identified in FRACTYPE
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: LTAG
      Attribute_Definition: Primary key linking mapped geologic objects to 
database tables
      Attribute_Definition_Source: report authors
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_mapunit_common
      Entity_Type_Definition:  A non-spatial table containing geologic 
information common to all geologic-map units (surficial units, cover units, 
igneous basement units, metamorphic basement units)
      Entity_Type_Definition_Source: report authors
    Attribute: 

      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: MULABL
      Attribute_Definition: Alpha-numeric symbol that corresponds with the 
formal or informal name of each geologic-map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MUNAME
      Attribute_Definition: Formal or informal map-unit name that corresponds to 
the indicated unit label (mulabl)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MUDISTINC
      Attribute_Definition: Statement about distinctive attributes of a map unit 
that allow it to be distinguished from other map units
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MUCONSOL
      Attribute_Definition: Degree to which a map unit of earth material is 
unconsolidated or consolidated
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: LITHSPEC
      Attribute_Definition: Specific earth-material types (lithotypes) that 
occur in a map unit; comma-delimited string listed in order of decreasing 
abundance
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: LITH1
      Attribute_Definition: The most abundant earth-material type (lithotype) in 
a map unit, or the first in a series of coequal lithotypes.  For map units that 
are homogeneous, Lithotype 1 represents the single lithotype in the unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: LITH2
      Attribute_Definition: Second-most abundant earth-material type (lithotype) 
in map unit, or second of two or more co-equal lithotypes
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: LITH3
      Attribute_Definition: Third-most abundant earth-material type (lithotype) 
in map unit, or third of three or more co-equal lithotypes
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: LITH4
      Attribute_Definition: Fourth-most abundant earth-material type (lithotype) 
in map unit, or fourth of four or more co-equal lithotypes
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: LITH5
      Attribute_Definition: Fifth-most abundant earth-material type (lithotype) 
in map unit, or fifth of five or more co-equal lithotypes
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: LITHOTHER
      Attribute_Definition: Other earth-material types (lithotypes) that occur 
in a map unit, other than lithotypes 1-5; comma-delimited string listed in order 
of decreasing abundance
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: LITHSUM
      Attribute_Definition: Summarizes the overall lithologic character of a 
geologic-map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: GENCOMP
      Attribute_Definition: The general composition of earth materials in a map 
unit, including higher-level hierarchical categories that facilitate broad-based 
queries
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ORIGPROC
      Attribute_Definition: The origin of a geologic-map unit in terms of the 
geologic processes by which its earth materials formed
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ORIGSET
      Attribute_Definition: The origin of a geologic-map unit in terms of the 
general geologic and geomorphic setting in which its earth materials formed
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: HIERSTRAT
      Attribute_Definition: Higher-level lithostratigraphic or lithodemic units 
to which a map unit belongs (formation, group, supergroup for cover units; 
suite, supersuite for crystalline basement units); comma-delimited string
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: HIERSTRUC
      Attribute_Definition: Regional or local structural block to which a map 
unit belongs, or with which it corresponds, at the time earth materials in the 
unit formed; expressed as a comma-delimited parent-child hierarchy.  A 
structural block is delineated by tectonic and (or) stratigraphic boundaries 
that separate it from other such blocks
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: HIERMORP
      Attribute_Definition: Geomorphic province within which a map unit occurs 
today, expressed as a parent-child hierarchy
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MUTAG
      Attribute_Definition: Primary key linking each geologic map-unit polygon 
to associated database tables
      Attribute_Definition_Source: report authors
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_mapunits_ages
      Entity_Type_Definition:  A non-spatial table of geologic map-unit ages
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: MULABL
      Attribute_Definition: Alpha-numeric symbol that corresponds with the 
formal or informal name of each geologic-map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MUAGEMIN
      Attribute_Definition: Minimum stratigraphic age for a geologic-map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MUAGEMAX
      Attribute_Definition: Maximum stratigraphic age for a geologic-map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: AGEBASIS
      Attribute_Definition: Basis on which a minimum and maximum stratigraphic 
age is assigned to a geologic map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: AGECONF
      Attribute_Definition: Confidence the database authors have in the minimum 
and maximum stratigraphic ages for a geologic-map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: LMAGEMIN
      Attribute_Definition: North American Land Mammal Age, minimum (as used by 
Woodburne, 1987, 2004) for map units of sedimentary materials
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: LMAGEMAX
      Attribute_Definition: North American Land Mammal Age, maximum (as used by 
Woodburne, 1987, 2004) for map units of sedimentary materials
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: FORAGEMIN
      Attribute_Definition: West Coast benthic foraminiferal stage-age, minimum 
(as used by Prothero, 2001; McDougall, 2008) for map units of sedimentary 
materials
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: FORAGEMAX
      Attribute_Definition: West Coast benthic foraminiferal stage-age, maximum 
(as used by Prothero, 2001; McDougall, 2008) for map units of sedimentary 
materials
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MAGAGEMIN
      Attribute_Definition: Magnetostratigraphic chron, minimum, using the 
chronology of Cande and Kent (1995)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MAGAGEMAX
      Attribute_Definition: Magnetostratigraphic chron, maximum, using the 
chronology of Cande and Kent (1995)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: PROAGEMIN
      Attribute_Definition: Minimum age for the protolith of a map unit of 
metamorphic earth materials
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: PROAGEMAX
      Attribute_Definition: Maximum age for the protolith of a map unit of 
metamorphic earth materials
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: PROAGEBAS
      Attribute_Definition: Basis on which a minimum and maximum age is assigned 
to the protolith of a map unit of metamorphic rock
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: METAGEMIN
      Attribute_Definition: Minimum age for metamorphism of earth materials in a 
geologic-map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: METAGEMAX
      Attribute_Definition: Maximum age for metamorphism of earth materials in a 
geologic-map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: METAGEBAS
      Attribute_Definition: Basis on which a minimum and maximum age is assigned 
to the metamorphism of materials in a map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ALTAGEMIN
      Attribute_Definition: Minimum age for alteration of earth materials in a 
geologic-map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ALTAGEMAX
      Attribute_Definition: Maximum age for alteration of earth materials in a 
geologic-map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ALTAGEBAS
      Attribute_Definition: Basis on which a minimum and maximum age is assigned 
to the alteration of materials in a map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: NUMAGEMIN
      Attribute_Definition: Minimum numeric age for a map unit based on an 
isotopic, magnetostratigraphic, luminescence, cosmogenic, or other analytical 
determination from the map unit in or nearby to the map area
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: NUMAGEMAX
      Attribute_Definition: Maximum numeric age for a map unit based on an 
isotopic, magnetostratigraphic, luminescence, cosmogenic, or other analytical 
determination from the map unit in or nearby to the map area
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: TECHNIQUE
      Attribute_Definition: Analytical technique used for minimum and maximum 
numeric-age determination
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MINPHASE
      Attribute_Definition: Mineral phase(s) used for analytical determination 
of minimum and maximum numeric age
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: AGEINTERP
      Attribute_Definition: Interpretation of minimum and maximum numeric-age 
determination (e.g., igneous emplacement, sediment deposition, exhumation, 
uplift)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MUTAG
      Attribute_Definition: Primary key linking each geologic map-unit polygon 
to associated database tables
      Attribute_Definition_Source: report authors
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_mapunits_cover_uniq
      Entity_Type_Definition:  A non-spatial table of geologic information 
unique to cover map units
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: MULABL
      Attribute_Definition: Alpha-numeric symbol that corresponds with the 
formal or informal name of each geologic-map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SEDSTRUC
      Attribute_Definition: Attributes describing primary and secondary 
sedimentary structures in a map unit of surficial or cover materials
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: GRAINCOMP
      Attribute_Definition: Composition of grains (particles < sand size) in 
sedimentary materials; expressed as a comma-delimited string in order of 
decreasing abundance
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: PETROGRAPH
      Attribute_Definition: Petrographic classification of sandy materials 
(various kinds of sand and sandstone) using the classification of Folk (1954, 
1968) and carbonate materials using the classification of Dunham (1962)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: CLASTCOMP
      Attribute_Definition: Composition of clasts (particles > sand size) in 
sedimentary materials; expressed as a comma-delimited string in order of 
decreasing abundance
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SRCTERR
      Attribute_Definition: Source terrane from which particles in map units of 
surficial or cover materials were derived 

      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SRCUNIQ
      Attribute_Definition: Clast types in a surficial or cover map unit that 
uniquely characterize the provenance of sediment in the map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SRCMU
      Attribute_Definition: Clast types in a surficial or cover map unit that 
were derived from some other map unit recognized in the region
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SRCBLK
      Attribute_Definition: Structural and (or) geomorphic block from which 
particles in a map unit of surficial or cover materials were derived
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SEDBASIN
      Attribute_Definition: Tectonic setting of basin within which sediment 
accumulated; for map units of sedimentary or surficial materials, and for 
sedimentary protoliths of metamorphic rocks
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SEQVERT
      Attribute_Definition: Vertical stratigraphic trends or patterns in 
lithotype succession within a map unit of sedimentary materials
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SEQLAT
      Attribute_Definition: Lateral stratigraphic trends or patterns in 
lithotype succession within a map unit of sedimentary materials
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SEQCYCL
      Attribute_Definition: Attributes pertaining to prograding, onlapping, or 
side-lapping cycles in a map unit of sedimentary materials
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: BASALCON
      Attribute_Definition: Attributes describing the character and geometry of 
the basal contact of a sedimentary map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: HIERDEP
      Attribute_Definition: Regional or local depositional regime to which a map 
unit of surficial or cover materials belongs
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MUTAG
      Attribute_Definition: Primary key linking each geologic map-unit polygon 
to associated database tables
      Attribute_Definition_Source: report authors
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_mapunits_crystalline_uniq
      Entity_Type_Definition:  A non-spatial table of polygon attributes for 
crystalline basement rocks consisting of both plutonic and metamorphic materials
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: MULABL
      Attribute_Definition: Alpha-numeric symbol that corresponds with the 
formal or informal name of each geologic-map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: TWOBODY
      Attribute_Definition: Shape of an intrusive igneous body in two dimensions 
(map view)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: THREEBODY
      Attribute_Definition: Shape of an intrusive igneous body in three 
dimensions
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: INTRUSREL
      Attribute_Definition: The concordant or discordant nature of an intrusive 
body relative to rock it has intruded
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: BODYZONE
      Attribute_Definition: Information about whether a map unit of igneous rock 
is homogeneous or has unmapped zones based on composition, texture, or structure
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: CONCHAR
      Attribute_Definition: The nature of the boundary transition (contact) of a 
map unit of igneous materials
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: CONDIP
      Attribute_Definition: The overall dip angle of contacts that bound an 
igneous body
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: CONGEOM
      Attribute_Definition: The three-dimensional orientation of contacts that 
bound an igneous body
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: IGNSEQ
      Attribute_Definition: Information about sequencing patterns in an igneous 
map unit, including (a) systematic or random geospatial patterns, (b) multiple 
intrusive phases, and (c) the marginal versus central position of unmapped 
phases within a map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: IGNSTRUC
      Attribute_Definition: Attributes describing igneous petrogenetic 
structures
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: IGNFABRIC
      Attribute_Definition: Information about the crystalline fabric of an 
igneous unit, emphasizing grain relations and crystalline texture
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: EQUISIZIGN
      Attribute_Definition: Grain-size attributes for igneous lithotypes that 
are equigranular
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: GRNDSIZIGN
      Attribute_Definition: Grain-size attributes for the groundmass of igneous 
lithotypes that are porphyritic
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: PHENOSIZ
      Attribute_Definition: Grain-size attributes for phenocrysts of igneous 
lithotypes that are porphyritic
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: COLORINDX
      Attribute_Definition: Ratio between dark-colored (mafic) and light-colored 
(felsic) minerals in coarse-grained igneous rocks, expressed as the percentage 
of dark minerals (for example, 7% mafic minerals = CI 7)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MAFICMNRL
      Attribute_Definition: Mafic minerals that characterize the groundmass of 
an igneous lithotype; comma-delimited string in order of decreasing abundance
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: TRACEMNRL
      Attribute_Definition: Trace minerals that characterize the groundmass of 
an igneous lithotype; expressed as a comma-delimited string in order of 
decreasing abundance
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: PHENOMNRL
      Attribute_Definition: Mineralogy of phenocrysts that occur in igneous 
lithotypes; expressed as a comma-delimited string in order of decreasing 
abundance
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: GRAINDET
      Attribute_Definition: Details about igneous crystal shapes, 
irregularities, and inhomogeneities
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: HIERINT
      Attribute_Definition: Regional or local intrusive assemblage or series to 
which a mapped plutonic or volcanic unit belongs
      Attribute_Definition_Source: report authors
    Attribute: 

      Attribute_Label: METSTYLE
      Attribute_Definition: Style or type of metamorphism for a map unit of 
prograde metamorphic materials
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: METBODY
      Attribute_Definition: Attributes for the scale and type of metamorphic 
body relative to associated intrusive igneous rocks or to regional metamorphic 
belts
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: METGRADE
      Attribute_Definition: Metamorphic grade of a map unit (prograde 
conditions)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: METSTRUC
      Attribute_Definition: Attributes describing metamorphic petrogenetic 
structures

      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: METFABRIC
      Attribute_Definition: Information about the crystalline fabric of a 
metamorphic unit, emphasizing grain relations and crystalline texture
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: EQUISIZMET
      Attribute_Definition: Grain-size attributes for equigranular metamorphic 
rocks
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: GRNDSIZMET
      Attribute_Definition: Grain-size attributes for the groundmass of a 
porphyroclastic or porphyroblastic metamorphic rock
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MEGASIZ
      Attribute_Definition: Megacryst grain-size attributes for a 
porphyroclastic or porphyroblastic metamorphic rock
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MEGATYPE
      Attribute_Definition: Type of megacrysts (porphyroclasts, porphyroblasts)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MNRLCOMP
      Attribute_Definition: Minerals in equigranular metamorphic rocks; 
expressed as a comma-delimited string in order of decreasing abundance
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: GRNDMNRL
      Attribute_Definition: Minerals in the groundmass of a porphyroclastic or 
porphyroblastic metamorphic rock; expressed as a comma-delimited string in order 
of decreasing abundance
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MEGAMNRL
      Attribute_Definition: Mineralogy of megacrysts in a porphyroclastic or 
porphyroblastic metamorphic rock; expressed as a comma-delimited string in order 
of decreasing abundance
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: FACIPRO
      Attribute_Definition: Metamorphic facies (prograde) represented by a map 
unit, without specifying PT-pathway
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: FACIMNRL
      Attribute_Definition: Assemblage of minerals diagnosing the metamorphic 
facies interpreted for a map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: FACIRETRO
      Attribute_Definition: Metamorphic facies (retrograde) represented by a map 
unit, without specifying PT-pathway
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: PTPATH
      Attribute_Definition: Pressure-temperature (PT) pathway interpreted for 
metamorphism of materials in a map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: PTINDEX
      Attribute_Definition: Index minerals that characterize the metamorphic 
pressure-temperature (PT) pathway designated in PTpath
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: PTASSEM
      Attribute_Definition: Mineral assemblages that characterizes the 
metamorphic pressure-temperature (PT) pathway designated in PTpath
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: METPROTO
      Attribute_Definition: Attributes describing protolith for map units of 
metamorphic materials (material name, composition, genesis)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: HIERBELT
      Attribute_Definition: Regional or local metamorphic assemblage to which a 
mapped metamorphic unit belongs
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MUTAG
      Attribute_Definition: Primary key linking each geologic map-unit polygon 
to associated database tables
      Attribute_Definition_Source: report authors
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_mapunits_igneous_uniq
      Entity_Type_Definition:  A non-spatial table of geologic information 
unique to igneous-basement map units
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: MULABL
      Attribute_Definition: Alpha-numeric symbol that corresponds with the 
formal or informal name of each geologic-map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: TWOBODY
      Attribute_Definition: Shape of an intrusive igneous body in two dimensions 
(map view)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: THREEBODY
      Attribute_Definition: Shape of an intrusive igneous body in three 
dimensions
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: INTRUSREL
      Attribute_Definition: The concordant or discordant nature of an intrusive 
body relative to rock it has intruded
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: BODYZONE
      Attribute_Definition: Information about whether a map unit of igneous rock 
is homogeneous or has unmapped zones based on composition, texture, or structure
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: CONCHAR
      Attribute_Definition: The nature of the boundary transition (contact) of a 
map unit of igneous materials
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: CONDIP
      Attribute_Definition: The overall dip angle of contacts that bound an 
igneous body
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: CONGEOM
      Attribute_Definition: The three-dimensional orientation of contacts that 
bound an igneous body
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: IGNSEQ
      Attribute_Definition: Information about sequencing patterns in an igneous 
map unit, including (a) systematic or random geospatial patterns, (b) multiple 
intrusive phases, and (c) the marginal versus central position of unmapped 
phases within a map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: IGNSTRUC
      Attribute_Definition: Attributes describing igneous petrogenetic 
structures
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: IGNFABRIC
      Attribute_Definition: Information about the crystalline fabric of an 
igneous unit, emphasizing grain relations and crystalline texture
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: EQUISIZIGN
      Attribute_Definition: Grain-size attributes for igneous lithotypes that 
are equigranular
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: GRNDSIZIGN
      Attribute_Definition: Grain-size attributes for the groundmass of igneous 
lithotypes that are porphyritic
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: PHENOSIZ
      Attribute_Definition: Grain-size attributes for phenocrysts of igneous 
lithotypes that are porphyritic
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: COLORINDX
      Attribute_Definition: Ratio between dark-colored (mafic) and light-colored 
(felsic) minerals in coarse-grained igneous rocks, expressed as the percentage 
of dark minerals (for example, 7% mafic minerals = CI 7)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MAFICMNRL
      Attribute_Definition: Mafic minerals that characterize the groundmass of 
an igneous lithotype; comma-delimited string in order of decreasing abundance
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: TRACEMNRL
      Attribute_Definition: Trace minerals that characterize the groundmass of 
an igneous lithotype; expressed as a comma-delimited string in order of 
decreasing abundance
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: PHENOMNRL
      Attribute_Definition: Mineralogy of phenocrysts that occur in igneous 
lithotypes; expressed as a comma-delimited string in order of decreasing 
abundance
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: GRAINDET
      Attribute_Definition: Details about igneous crystal shapes, 
irregularities, and inhomogeneities
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: HIERINT
      Attribute_Definition: Regional or local intrusive assemblage or series to 
which a mapped plutonic or volcanic unit belongs
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MUTAG
      Attribute_Definition: Primary key linking each geologic map-unit polygon 
to associated database tables
      Attribute_Definition_Source: report authors
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_mapunits_metamorphic_uniq
      Entity_Type_Definition:  A non-spatial table of geologic information 
unique to metamorphic-basement map units
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: MULABL
      Attribute_Definition: Alpha-numeric symbol that corresponds with the 
formal or informal name of each geologic-map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: METSTYLE
      Attribute_Definition: Style or type of metamorphism for a map unit of 
prograde metamorphic materials
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: METBODY
      Attribute_Definition: Attributes for the scale and type of metamorphic 
body relative to associated intrusive igneous rocks or to regional metamorphic 
belts
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: METGRADE
      Attribute_Definition: Metamorphic grade of a map unit (prograde 
conditions)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: METSTRUC
      Attribute_Definition: Attributes describing metamorphic petrogenetic 
structures
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: METFABRIC
      Attribute_Definition: Information about the crystalline fabric of a 
metamorphic unit, emphasizing grain relations and crystalline texture
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: EQUISIZMET
      Attribute_Definition: Grain-size attributes for equigranular metamorphic 
rocks
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: GRNDSIZMET
      Attribute_Definition: Grain-size attributes for the groundmass of a 
porphyroclastic or porphyroblastic metamorphic rock
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MEGASIZ
      Attribute_Definition: Megacryst grain-size attributes for a 
porphyroclastic or porphyroblastic metamorphic rock
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MEGATYPE
      Attribute_Definition: Type of megacrysts (porphyroclasts, porphyroblasts)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MNRLCOMP
      Attribute_Definition: Minerals in equigranular metamorphic rocks; 
expressed as a comma-delimited string in order of decreasing abundance
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: GRNDMNRL
      Attribute_Definition: Minerals in the groundmass of a porphyroclastic or 
porphyroblastic metamorphic rock; expressed as a comma-delimited string in order 
of decreasing abundance
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MEGAMNRL
      Attribute_Definition: Mineralogy of megacrysts in a porphyroclastic or 
porphyroblastic metamorphic rock; expressed as a comma-delimited string in order 
of decreasing abundance
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: FACIPRO
      Attribute_Definition: Metamorphic facies (prograde) represented by a map 
unit, without specifying PT-pathway
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: FACIMNRL
      Attribute_Definition: Assemblage of minerals diagnosing the metamorphic 
facies interpreted for a map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: FACIRETRO
      Attribute_Definition: Metamorphic facies (retrograde) represented by a map 
unit, without specifying PT-pathway
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: PTPATH
      Attribute_Definition: Pressure-temperature (PT) pathway interpreted for 
metamorphism of materials in a map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: PTINDEX
      Attribute_Definition: Index minerals that characterize the metamorphic 
pressure-temperature (PT) pathway designated in PTpath
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: PTASSEM
      Attribute_Definition: Mineral assemblages that characterizes the 
metamorphic pressure-temperature (PT) pathway designated in PTpath
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: METPROTO
      Attribute_Definition: Attributes describing protolith for map units of 
metamorphic materials (material name, composition, genesis)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: HIERBELT
      Attribute_Definition: Regional or local metamorphic assemblage to which a 
mapped metamorphic unit belongs
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MUTAG
      Attribute_Definition: Primary key linking each geologic map-unit polygon 
to associated database tables
      Attribute_Definition_Source: report authors
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_mapunits_surficial_uniq
      Entity_Type_Definition:  A non-spatial table of geologic information 
unique to surficial map units
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: MULABL
      Attribute_Definition: Alpha-numeric symbol that corresponds with the 
formal or informal name of each geologic-map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: CONSOLDEG
      Attribute_Definition: Degree to which earth materials in a surficial map 
unit are consolidated
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SEDSTRUC
      Attribute_Definition: Attributes describing primary and secondary 
sedimentary structures in a map unit of surficial or cover materials
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: GRAINCOMP
      Attribute_Definition: Composition of grains (particles < sand size) in 
sedimentary materials; expressed as a comma-delimited string in order of 
decreasing abundance
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: CLASTCOMP
      Attribute_Definition: Composition of clasts (particles > sand size) in 
sedimentary materials; expressed as a comma-delimited string in order of 
decreasing abundance
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SRCTERR
      Attribute_Definition: Source terrane from which particles in map units of 
surficial or cover materials were derived
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SRCUNIQ
      Attribute_Definition: Clast types in a surficial or cover map unit that 
uniquely characterize the provenance of sediment in the map unit
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SRCMU
      Attribute_Definition: Clast types in a surficial or cover map unit that 
were derived from some other map unit recognized in the region
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SRCBLK
      Attribute_Definition: Structural and (or) geomorphic block from which 
particles in a map unit of surficial or cover materials were derived
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SURFDISS
      Attribute_Definition: Degree of surface dissection (gullying)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SURFPAVE
      Attribute_Definition: Degree to which upper surface is armored by pavement
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SURFMANT
      Attribute_Definition: Degree to which the upper surface of a mapped 
surficial unit is covered by a veneer of sediment or rubble derived from the 
unit or transported onto it from another source; too thin to map
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: CLASTWEA
      Attribute_Definition: Weathering degree for clasts on and beneath the 
upper surface of a map unit of unconsolidated surficial materials
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: VARNISH
      Attribute_Definition: Degree to which varnish is developed on clasts
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SOILSTRAT
      Attribute_Definition: Information about pedogenic-soil development, 
including surface soils, buried soils, relict soils, soil sequence where 
compound, and informal classification
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SOILDEG
      Attribute_Definition: Informal statement about the degree (maturity) of 
soil development on the upper surface of surficial geologic-map units
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SEDBASIN
      Attribute_Definition: Tectonic setting of the basin within which sediment 
accumulated; used for map units of sedimentary or surficial materials, and for 
sedimentary protoliths of metamorphic rocks
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: HIERFAM
      Attribute_Definition: Higher-level categories into which surficial units 
can be grouped in order to allow increased map-unit generalization across the 
map area, based on age and materials genesis; comma-delimited string of values
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: HIERCRON
      Attribute_Definition: Higher-level categories into which surficial units 
can be grouped, based on age factors without consideration of materials genesis; 
comma-delimited string of values
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: HIERDEP
      Attribute_Definition: Regional or local depositional regime to which a map 
unit of surficial or cover materials belongs
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MUTAG
      Attribute_Definition: Primary key linking each geologic map-unit polygon 
to associated database tables
      Attribute_Definition_Source: report authors
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_morphlines
      Entity_Type_Definition:  A non-spatial table containing information for 
linear geomorphic features
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: SUMMARY
      Attribute_Definition: Major attributes associated with a specified 
geomorphic-line type; comma-delimited text string
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: CATEGORY
      Attribute_Definition: The principal category to which a geomorphic object 
belongs
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: GEOMETRY
      Attribute_Definition: The principal spatial geometry of a geomorphic 
feature
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MORPHCLASS
      Attribute_Definition: The principal grouping to which a geomorphic feature 
belongs
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MORPHROLE
      Attribute_Definition: The conceptual role played by a geomorphic feature
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: TYPE
      Attribute_Definition: The specific type of geomorphic feature represented 
by an object.
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ORIGIN
      Attribute_Definition: The origin of a geomorphic feature in terms of 
geologic process
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: LTAG
      Attribute_Definition: Primary key linking mapped geomorphic objects to 
database tables
      Attribute_Definition_Source: report authors
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_morphpolys
      Entity_Type_Definition:  A non-spatial table containing information for 
geomorphic polygons
      Entity_Type_Definition_Source: report authors
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: CATEGORY
      Attribute_Definition: The principal category to which a geomorphic feature 
belongs
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: GEOMETRY
      Attribute_Definition: The principal spatial geometry of a geomorphic 
feature
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MORPHCLASS
      Attribute_Definition: The principal grouping to which a geomorphic feature 
belongs 

      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MORPHROLE
      Attribute_Definition: The geologic role played by a geomorphic feature
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: FORMTYPE
      Attribute_Definition: Type of landform
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: FORMORIG
      Attribute_Definition: Origin of landform
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: LANDAGEMIN
      Attribute_Definition: Minimum stratigraphic age for a landform
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: LANDAGEMAX
      Attribute_Definition: Maximum stratigraphic age for a landform
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: AGECONF
      Attribute_Definition: Confidence the database authors have in the minimum 
and maximum ages for a landform
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: AGEBASIS
      Attribute_Definition: The basis for assigning a minimum and maximum age to 
a geomorphic feature
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SURFGRAN
      Attribute_Definition: The degree to which the upper surface of a landform 
is geomorphically uniform, or is partitioned into two or more geomorphic domains
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SURFMORPH
      Attribute_Definition: A morphometric parameter specifying the form of a 
surface in plan and profile view based on geometric combinations of planar, 
concave, and convex surfaces that, when combined, yield unique two-dimensional 
downslope and across-slope profiles
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SURFSHAP
      Attribute_Definition: A morphometric parameter that indicates the body 
shape, in plan view, of the upper surface of a body of unconsolidated sediment
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SURFAREA
      Attribute_Definition: A morphometric parameter that indicates the area of 
the upper surface of a body of unconsolidated sediment
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SURFREL
      Attribute_Definition: Contains information about the types of 
microfeatures that occur on the upper surface of a map unit of unconsolidated 
sedimentary materials or a geomorphic surface
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SLOPEPOS
      Attribute_Definition: The position of an upper surface relative to the 
regional paleoslope (proximal, medial, distal)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: DRAINPAT
      Attribute_Definition: The kind of regional drainage network (dendritic, 
parallel, trellis, rectangular, radial, annular, pinnate, centripetal, 
thermokarst; Howard (1967) and Schoeneberger and Wysocki (2002, p. 3-42--3-43)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: DRAINPOS
      Attribute_Definition: Contains information about the position of an upper 
surface relative to the regional drainage network (internal, marginal, upstream, 
downstream)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SURFDISS
      Attribute_Definition: Contains information about the degree to which the 
upper surface of a landform has been degraded and incised by erosion
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SURFBUR
      Attribute_Definition: Contains information about the degree to which the 
upper surface of a landform is buried by a younger mantle of surficial material 
derived from the surface itself or from an external source
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SURFWEA
      Attribute_Definition: Contains information about the degree to which the 
upper surface of a landform has been modified by weathering
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SURFSMOO
      Attribute_Definition: Contains information about the degree to which 
topographic relief on the upper surface of a landform has been subdued by 
processes (weathering, local erosion, and local re-sedimentation) that smooth 
out original topographic relief
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: SURFDEF
      Attribute_Definition: Contains information about features indicating 
deformation of the upper surface of a landform by deformation due to tectonism, 
ground subsidence, differential settling, chemical effects, or other influences 
that operate following the origin of the surface
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: HIERSTRUC
      Attribute_Definition: Regional or local structural block to which a 
landform belongs or with which it corresponds, expressed as a parent-child 
hierarchy.  A structural block is bounded by tectonic and (or) stratigraphic 
boundaries that separate it from other blocks
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: HIERMORP
      Attribute_Definition: Geomorphic province within which a map unit occurs, 
expressed as a parent-child hierarchy
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: MORPHLABL
      Attribute_Definition: Alpha-numeric symbol that corresponds with the 
formal or informal name of each geomorphic-map unit; also is a primary key 
linking each geomorphic polygon to associated database tables
      Attribute_Definition_Source: report authors
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label:  elcs_strucpnts
      Entity_Type_Definition:  A non-spatial table containing information about 
each and every structure point
      Entity_Type_Definition_Source: report author
    Attribute:
      Attribute_Label: OBJECTID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are 
automatically generated.
    Attribute:
      Attribute_Label: SUMMARY
      Attribute_Definition: A semi-complete summary of geologic and cartographic 
concepts represented by a point type; comma-delimited string of values, each of 
which occurs singly in other items in elcs_structurepoints, where the value can 
be selected for (queried) individually
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: CATEGORY
      Attribute_Definition: The principal category to which a structural object 
belongs
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: GEOMETRY
      Attribute_Definition: The principal spatial geometry of a geologic 
structure
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: STRUCLASS
      Attribute_Definition: The principal grouping to which a geologic structure 
belongs
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ROLE
      Attribute_Definition: The geologic role played by a geologic structure
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: TYPE
      Attribute_Definition: The specific type of geologic structure represented 
by a geologic object
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ORIGIN
      Attribute_Definition: The origin of a geologic structure in terms of 
geologic process
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ORIENT
      Attribute_Definition: The 3-dimensional orientation of a planar object 
(horizontal, inclined, vertical, overturned) or a linear object (plunges in 
direction of azimuth)
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: FACING
      Attribute_Definition: Indicates whether layer tops in a sedimentary 
sequence have been determined from lithologic indicators; facing information is 
useful in tilted, vertical, or overturned sequences where "correct-side-up" 
cannot be determined from stratigraphic context
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: GENERATION

      Attribute_Definition: The primary versus secondary nature of a geologic 
structure, where primary refers to structures developed during genesis of the 
earth material and secondary refers to structures developed after the earth 
material was formed, either through deformation or textural modification
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: METHOD
      Attribute_Definition: The method by which the strike, dip, bearing, or 
plunge of a geologic structure were determined or estimated
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: DATAORIG
      Attribute_Definition: Information about whether a structural data point 
was measured by the database authors or was compiled from a published or 
unpublished source. Values: original, compiled
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: ACCURACY
      Attribute_Definition: Degree to which an objectÕs X,Y position on the 
basemap and in the geodatabase projection corresponds to its actual location in 
the field
      Attribute_Definition_Source: report authors
    Attribute:
      Attribute_Label: PTAG
      Attribute_Definition: Primary key linking structural-point objects to 
database tables
      Attribute_Definition_Source: report authors
  Overview_Description:
    Entity_and_Attribute_Overview:
      The ArcGIS version of the El Casco 7.5' quadrangle digital geologic 
database consists of 14 feature classes and 14 non-spatial tables that have 
additional information for features in particular feature classes.

      elcs_mapunit_polys (geologic map units); elcs_geolines (contacts, faults, 
and fractures); elcs_geolines_folds (fold axial-plane lines); elcs_morph_polys 
(geomorphic polygons); elcs_morph_lines  (planar geomorphic features); 
elcs_structurepoints (structural points); elcs_obs_points (point observation 
data); elcs_obs_lines (line observation data); elcs_orn_points (ornamentation 
for geologic lines);.elcs_dip_anno (dip value annotation); elcs_fault_anno 
(fault name annotation); elcs_fold_anno (fold name annotation); 
elcs_mapunit_anno (map-unit annotation); elcs_obs_anno (observation line and 
point annotation).

      Data tables related to these feature classes include: (a) 
elcs_mapunit_common (provides general information about each geologic-map unit, 
including general lithologic features and geologic origin); (b) 
elcs_geolines_common (provides information about geologic arcs) (c) 
elcs_strucpnts (provides information about structural points)

      (1)  The feature class elcs_mapunit_polys contains information about 
geologic-map units (represented by polygons).  The feature class joins to the 
table elcs_mapunit_common by the key "mutag". For display purposes, the dataset 
elcs_mapunit_anno contains annotation of selected map-unit polygons.  There is a 
relationship class association between the feature class elsc_mapunit_polys and 
the table elcs_mapunits_ages which provides geologic age information for each 
map unit. The connection is made through the value in the field "mutag".  The 
tables elcs_mapunits_cover_uniq, elcs_mapunits_igneous_uniq, 
elcs_mapunits_metamorphic_uniq, and elcs_mapunits_metamorphic_uniq have a 
relationship class association through "mutag" to cover, igneous, metamorphic, 
or surficial map units crustal architecture types respectively.

      (2)  The feature class elcs_geolines contains information about geologic 
features that bound geologic map units (contacts) or break them (faults and 
fractures); these features display cartographically as lines.  The feature class 
elcs_geolines joins to the table elcs_geolines_common by the key "ltag".  The 
tables elcs_geolines_contacts_uniq, elcs_geolines_faults, and 
elcs_geolines_fractures_uniq contain additional information  unique to contacts, 
faults, and fractures respectively. The field (item) "ltag" is also used to make 
these associations 

      (3)  The feature class elcs_geolines_folds contains fold axial-plane lines 
that delineate the intersection of a fold axis with the EarthÕs surface.  The 
feature class elcs_geolines_folds joins to the table elcs_geolines_common by the 
key "ltag".  It also has a relationship class association through "ltag" to the 
table elcs_geolines_folds_uniq, which has information unique to folds.

      (4)  The feature class elcs_structurepoints contains analyzable structural 
data including information that describes the types and orientation of planar 
and linear structural features such as bedding, foliation, fault-plane dip, and 
fold-hinge plunge.  One annotation subclass is included in the geologic points 
file which displays the respective dip and plunge values associated with 
individual point data.  The feature class elcs_structurepoints joins to the 
table elcs_strucpnts by the key "ptag".

      (5)  The feature class elcs_morph_polys contains information about 
geomorphic polygons (for example, geomorphic surfaces).

      (6)  The feature class elcs_orn_points stores point data that represent 
ornamentation for geologic lines (for example, bar-and-ball on downthrown block, 
strike-slip arrows, anticline-syncline arrows, and so forth).

      (7)  The feature class elcs_morph_lines contains information about planar 
geomorphic surfaces.

      (8)  The feature class elcs_obs_points contains data that represent the 
locality of data stations associated with multiple authors and sources, all of 
which have contributed geologic data.  The locality data represented in 
elcs_obs_points serves several purposes:  (1) as a proxy for author confidence 
in unit identification, (2) as a means of identifying each author's 
contribution, and (3) as a means of identifying data from sources other than the 
USGS authors.

      Included with the El Casco digital database are four ASCII files 
containing gravity data and providing locations for measurement stations.  The 
data user can process the latitude/longitude data and gravity data in the ASCII 
files to produce grid data that in turn can be processed to yield gravity 
contours like those in the map plot ofr20101274_sheet3.pdf.
    Entity_and_Attribute_Detail_Citation:
      Entities, attributes, and values in the El Casco geologic database are 
described in this metadata file and in the accompanying user 
guide("ofr20101274_database_userguide.pdf").  Most geologic and geomorphic 
values conform to common usage (for example, Glossary of Geology, Jackson, 
1997); the database glossary and user guide adapt and refine these common usages 
for application to database SQL queries.  Cartographic styles for geologic lines 
and points on the map plot " ofr20101274_sheet1.pdf" generally conform to the 
FGDC Digital Cartographic standard for geologic map symbolization (Federal 
Geographic Data Committee (2006).

      Federal Geographic Data Committee [prepared for the Federal Geographic 
Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic 
standard for geologic map symbolization:  Reston, Va., Federal Geographic Data 
Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates 
http://ngmdb.usgs.gov/fgdc_gds/geolsymstd/fgdc-geolsym-all.pdf

      Jackson, J.A., 1997, Glossary of geology, 4th ed.:  Alexandria, Virginia, 
American Geological Institute, 769 p.
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey Information Services
      Contact_Address:
        Address_Type: mailing address
        Address: Box 25286 Denver Federal Center
        City: Denver
        State_or_Province: CO
        Postal_Code: 80225
        Country: USA
      Contact_Voice_Telephone: 303-202-4700
      Contact_Facsimile_Telephone: 303-202-4693
  Resource_Description: Downloadable Data
  Distribution_Liability:
    The U.S. Geological Survey (USGS) provides these geographic data "as is."  
The USGS makes no guarantee or warranty concerning the accuracy of information 
contained in the geographic data.  The USGS further makes no warranties, either 
expressed or implied as to any other matter whatsoever, including, without 
limitation, the condition of the product, or its fitness for any particular 
purpose.  The burden for determining fitness for use lies entirely with the 
user.  Although these data have been processed successfully on computers at the 
USGS, no warranty, expressed or implied, is made by the USGS regarding the use 
of these data on any other system, nor does the fact of distribution constitute 
or imply any such warranty.

    In no event shall the USGS have any liability whatsoever for payment of any 
consequential, incidental, indirect, special, or tort damages of any kind, 
including, but not limited to, any loss of profits arising out of use of or 
reliance on the geographic data or arising out of the delivery, installation, 
operation, or support by USGS.

    This digital, geologic map database of the El Casco 7.5' quadrangle, 
1:24,000 map-scale, and any derivative maps thereof, is not meant to be used or 
displayed at any scale larger than 1:24,000 (for example, 1:12,000).
Metadata_Reference_Information:
  Metadata_Date: 20091212
  Metadata_Review_Date: 20091212
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: Douglas M. Hirschberg
      Contact_Position: Geographer
      Contact_Address:
        Address_Type: mailing address
        Address:
          U.S. Geological Survey
          520 North Park Avenue, Room 355
        City: Tucson
        State_or_Province: Arizona
        Postal_Code: 85719
        Country: USA
      Contact_Voice_Telephone: 520-670-5514
      Contact_Facsimile_Telephone: 520-670-5571
      Contact_Electronic_Mail_Address: dmhirsch@usgs.gov
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: local time
  Metadata_Access_Constraints: none
  Metadata_Use_Constraints: none
  Metadata_Extensions:
    Online_Linkage: http://www.esri.com/metadata/esriprof80.html
    Profile_Name: ESRI Metadata Profile