PRELIMINARY GEOLOGIC MAP OF THE ELSINORE 7.5’ QUADRANGLE, RIVERSIDE COUNTY, CALIFORNIA By Douglas M. Morton1 and F. Harold Weber, Jr.2 Digital preparation by Rachel M. Alvarez2 and Diane Burns3 Prepared in cooperation with CALIFORNIA GEOLOGICAL SURVEY Open-File Report OF 03-281 2003 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. This database, identified as “Preliminary Geologic Map of the Elsinore 7.5’ Quadrangle, Riverside County, California” has been approved for release and publication by the Director of the USGS. U.S. DEPARTMENT OF INTERIOR U.S. GEOLOGICAL SURVEY 1U.S. Geological Survey Department of Earth Sciences University of California Riverside, CA 92521 2California Geological Survey 655 South Hope St. Los Angeles, CA 90017 3California Geological Survey Department of Earth Sciences University of California Riverside, CA 92521 TABLE OF CONTENTS Introduction General How to obtain paper plots Database contents Data package Plot package Symbols Package Other files Software utilities How to obtain the digital files How to extract the geologic map database from the tar file Digital database Postscript plot files Portable document format (.pdf) files How to convert the ARC/INFO interchange (export) files Digital geologic map specifications Digital compilation Base map Spatial resolution Map accuracy standards Faults and landslides Database specifics General Lines Polygons Points References Appendix I Metadata INTRODUCTION General Open-File Report 03-281 contains a digital geologic map database of the Elsinore 7.5’ quadrangle, Riverside County, California that includes: 1. ARC/INFO (Environmental Systems Research Institute, http://www.esri.com) version 7.2.1 coverages of the various elements of the geologic map. 2. A Postscript file to plot the geologic map on a topographic base, and containing a Correlation of Map Units diagram (CMU), a Description of Map Units (DMU), and an index map. 3. Portable Document Format (.pdf) files of: a. This Readme; includes in Appendix I, data contained in els_met.txt b. The same graphic as plotted in 2 above. Test plots have not produced precise 1:24,000-scale map sheets. Adobe Acrobat page size setting influences map scale. The Correlation of Map Units and Description of Map Units is in the editorial format of USGS Geologic Investigations Series (I-series) maps but has not been edited to comply with I-map standards. Within the geologic map data package, map units are identified by standard geologic map criteria such as formation-name, age, and lithology. Where known, grain size is indicated on the map by a subscripted letter or letters following the unit symbols as follows: lg, large boulders; b, boulder; g, gravel; a, arenaceous; s, silt; c, clay; e.g. Qyfa is a predominantly young alluvial fan deposit that is arenaceous. Multiple letters are used for more specific identification or for mixed units, e.g., Qfysa is a silty sand. In some cases, mixed units are indicated by a compound symbol; e.g., Qyf2sc. Even though this is an Open-File Report and includes the standard USGS Open-File disclaimer, the report closely adheres to the stratigraphic nomenclature of the U.S. Geological Survey. Descriptions of units can be obtained by viewing or plotting the .pdf file (3b above) or plotting the postscript file (2 above). This Readme file describes the digital data, such as types and general contents of files making up the database, and includes information on how to extract and plot the map and accompanying graphic file. Metadata information can be accessed at http://geo-nsdi.er.usgs.gov/metadata/open-file/03-281 and is included in Appendix I of this Readme. HOW TO OBTAIN PAPER PLOTS For those having access to large-format plotters such as HP650C, HP755C, and HP2500C, plots may be made directly from the included plot file. DATABASE CONTENTS The files constituting the geologic map database of this Open-File Report are listed below along with the interchange files from which they were extracted. Data Package All files listed below are in a compressed tar file named els.tar.gz (2.1 Mb); see section below titled, SOFTWARE UTILITES. ARC/INFO interchange files Elsinore coverages Contains els_geo.e00 els_geo Contacts, faults, geologic unit labels els_ano.e00 els_ano Annotation subclasses: GEO (for plotting unit labels) Leaders els_str.e00 els_str Attitudes and their dip values. Dip values plotted as annotation. The directory, info/, is produced in the process of importing interchange files to ARC coverages in ARC/INFO. The els (Elsinore) info/ directory contains: Feature Attribute Tables Polygon attribute table els_geo.pat Arc attribute table els_geo.aat els_ano.aat Point attribute table els_str.pat Annotation attribute table els_ano.tatgeo Raster file Resultant image Contains els.tif Elsinore base map Topographic base from 500 dpi scan of USGS Elsinore 7.5’ quadrangle, 1953 Plot Package PostScript plot files of the geologic map and explanation; please see section below titled, SOFTWARE UTILITIES for additional information. Compressed file Resultant image Contains els_map.ps.gz els_map.ps PostScript plot file of geologic map and CMU/DMU The Postscript file is compressed using winzip. The uncompressed Postscript file els_map.ps will plot a 1:24,000 scale, full color geologic map of the Elsinore quadrangle on the topographic base. A detailed CMU and DMU are included on the sheet. The sheet is in the editorial format of the U.S. Geological Survey’s Geologic Investigations (I) map series, and is approximately 48 X 36 inches in size. The map sheet has been successfully plotted on Hewlett-Packard large-format plotters, models HP755C, and HP2500C. Symbols Package Files in the plot package have been prepared to produce optimum plots using the shade, line, and marker sets listed below; these symbol sets and supporting fonts are included in a compressed tar file named symbols.tar.gz (0.18 Mb); see section below titled SOFTWARE UTILITIES. geoSCAMP2.lin Lineset geoSCAMP2.mrk Markerset for points alc1.shd Colors geology2.shd Pattern fills fnt026 Font required for geoSCAMP2.lin fnt037 Font required for geoSCAMP2.mrk fnt035 Font required for geology2.shd Special geologic characters used in unit designations are from the Geoage font group and are contained in the geoage folder within the symbols.tar.gz file. The Geoage fonts are used in conjunction with the geofont.txt textset when using ESRI software. The geoage folder contains fonts, the geofont.txt textset, and explanatory files. Other files README.pdf This document els_map.pdf Pdf plot file of geologic map and CMU/DMU SOFTWARE UTILITIES Files which have .gz file extension were compressed using gzip. Gzip utilities are available free of charge via the Internet at the gzip home page, http://www.gzip.org. Files with a .zip file extension were compressed using WinZip, available at http://www.winzip.com. The data package and symbols package are additionally bundled into a single tar (tape archive) file. The individual files must be extracted using a tar utility, available free of charge via the Internet through links on the Common Internet File Formats page, http://www.matisse.net/files/format.html. One such utility is WinZip, available at http://www.winzip.com. HOW TO OBTAIN THE DIGITAL FILES The export files, and subsequently the data and plot files, constituting the geologic map database of this Open-File Map may be obtained in two ways, both over the Internet. 1. The files can be obtained via the Web from Western Region Geologic Information Server. Go to the web page at http://geopubs.wr.usgs.gov/open-file/of03-281 and follow the directions to download the files. 2. The files can also be obtained by anonymous ftp over the Internet from wrgis.wr.usgs.gov. The files are located in the directory /pub/open-file/. Be sure to use binary transfer mode or ASCII mode for individual .e00 (ARC interchange file format) files. HOW TO EXTRACT THE GEOLOGIC MAP DATABASE FROM THE TAR FILE Digital database After downloading the files, they must be uncompressed using a gzip utility such as gzip itself or WinZip. The data files must then be extracted using a tar utility or Winzip. This process will create a directory, els/, that will contain the ARC/INFO interchange files and supporting files. The directory should contain the following files: els/ els_geo.e00 els_str.e00 els_ano.e00 els.tif The symbols.tar.gz file is imported using the same methods as for the els.tar.gz file. It will create a directory, symbols/ that will contain the following directory and seven files: geoage/ geoSCAMP2.lin geoSCAMP2.mrk alc1.shd geology2.shd fnt026 fnt037 fnt035 The following are not included in the database tar file, and are downloaded separately. els_map.ps.gz README.pdf els_map.pdf Postscript plot files Make a 13.3 MB uncompressed file, els_map.ps (plot of complete map), by typing gzip -d els_map.ps.gz (or use gzip utility of choice). Portable Document Format (.pdf) files PDF files are not stored as gzip files. They are accessed using Adobe Acrobat Reader software, available free from the Adobe website http://www.adobe.com. Follow instructions at the website to download and install the software. Acrobat Reader contains an on-line manual and tutorial. HOW TO CONVERT THE ARC/INFO INTERCHANGE (EXPORT) FILES The ARC interchange (.e00) files are converted to ARC coverages using the ARC command IMPORT. ARC interchange files can also be read by some other Geographic Information Systems, including ArcView (ESRI) and MapInfo (http://www.mapinfo.com), (Environmental Systems Research Institute, Inc., 1998). Please consult your GIS documentation to see if you can use ARC interchange files and the procedure to import them. DIGITAL GEOLOGIC MAP SPECIFICATIONS Digital compilation The geologic map information was hand digitized from a base-stable original (ink on a greenline) of the geologic map at 1:24,000 scale. Digital tics were placed by hand at latitude/longitude intersections. The lines, points, and polygons were edited using standard ARC/INFO commands, and in some places, interactively by hand using graphical user interface ALACARTE (Fitzgibbon, 1991, Fitzgibbon and Wentworth, 1991, Wentworth and Fitzgibbon, 1991). Digitization and editing artifacts significant enough to display at a scale of 1:24,000 were corrected. Base map The base map image (els.tif) was prepared by scanning a scale-stable clear film of the U.S. Geological Survey, 1:24,000 Elsinore 7.5’ quadrangle (1953) topographic map. Scanning was done using an Anatech Eagle 4080 monochrome 800 dpi scanner; at a resolution of 500 dpi. The raster scan was converted to a monochromatic image in ARC/INFO, and registered and rectified to the Elsinore 7.5’ quadrangle. No elements of the base layer are attributed. The base map is provided for reference only. Spatial resolution Use of this digital geologic map database should not violate the spatial resolution of the data. Although the digital form of the data removes the constraint imposed by the scale of a paper map, the detail and accuracy inherent in map scale are also present in the digital data. The fact that this database was edited at a scale of 1:24,000 means that higher resolution information is not generally present in the dataset. Plotting at scales larger than 1:24,000 will not yield greater real detail, although it may reveal fine-scale irregularities above the intended resolution of the database. Similarly, although higher resolution data is incorporated at a few places, the resolution of the combined output will be limited by the lower resolution data. Map accuracy standards Until uniform National geologic map standards are developed and adopted, lines and points on SCAMP 1:24,000 scale geologic maps that are located to within 15 meters, relative to accurately located features on the base map, are considered to meet map accuracy standards. Dashed lines, indicated in the database as approximately located or inferred, are generally located within 30 meters, relative to accurately located features on the base map. Faults and landslides This database is sufficiently detailed to identify and characterize many actual and potential geologic hazards represented by faults and landslides, but it is not sufficiently detailed for site-specific determinations. Faults shown do not take the place of fault rupture hazard zones designated by the California State Geologist (see Hart, 1998). Database specifics General--The map database consists of ARC/INFO format coverages, which are stored in polyconic projection (Table 1), and a series of data tables. Digital tics define a 2.5-minute grid of latitude and longitude in the geologic coverages corresponding to the 2.5-minute tic grid on the topographic base map. Table 1 --- Map Projection Projection Polyconic Datum NAD27 Zunits No Units Meters Spheroid Clark 1866 X shift 0.000000000 Y shift 0.000000000 Parameters -117 18 45.000 longitude of central meridian 33 37 30.00 latitude of projections origin 0.00000 false easting (meters) 0.00000 false northing (meters) The content of the geologic database can be described in terms of feature classes that include lines, points, and areas that compose the map. See the metadata text file (Appendix I) for detailed descriptions. Lines – Lines are recorded as strings of arcs and are described in an arc attribute (.aat) table. Complete lists of the line types (LTYPE) used in the quadrangle are available in Appendix I. They represent contacts and faults, which define the boundaries of map units and map boundaries. Polygons --- Geologic map units (polygons) are described in the polygon attribute (.pat) table (details in Appendix I). For traditional descriptions of the map units, see the Portable Document Format file els_map.pdf or the Postscript map plot, els_map.ps. A list of all map units in the database is given in Appendix I. Points – Point information (attitudes of planar and linear features) is recorded as coordinate and related information. Complete lists of the point types (PTTYPE) used in the point coverage are available in Appendix I. REFERENCES Environmental Systems Research Institute, Inc, 1991, ARC/INFO command references 6.0: Proprietary software manual Fitzgibbon, T.T., 1991, ALACARTE installation and system manual (version 1.0): U.S. Geological Survey, Open-File Report 91-587B Fitzgibbon, T.T., and Wentworth, C.M., 1991, ALACARTE user interface – AML code and demonstration Maps (version 1.0): U.S. Geological Survey, Open-File Report 91-587A Wentworth, C.M., and Fitzgibbon, T.T., 1991, ALACARTE user manual (version 1.0): U.S. Geological Survey Open-File Report 91-587C APPENDIX I (original metadata text) Identification_Information: Citation: Citation_Information: Originator: Douglas M. Morton Originator: F. Harold Weber, Jr. Publication_Date: 2003 Title: Preliminary Geologic Map of the Elsinore 7.5' Quadrangle, Riverside County, California Edition: Version 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: USGS OFR 03-281 Publication_Information: Publication_Place: Menlo Park, California Publisher: U.S. Geological Survey Online_Linkage: http://geopubs.wr.usgs.gov/open-file/of03-281 Description: Abstract: The Elsinore quadrangle is located in the northern part of the Peninsular Ranges Province and includes parts of two structural blocks, or structural subdivisions of the province. The active Elsinore Fault Zone diagonally crosses the southwest corner of the quadrangle, and is a major element of the right-lateral strike-slip San Andreas Fault system. The Elsinore Fault Zone separates the Santa Ana Mountains block west of the fault zone from the Perris block to the east. Internally both blocks are relatively stable and within the quadrangle are characterized by the presence of widespread erosional surfaces of low relief. Within the quadrangle the Santa Ana Mountains block is underlain by undifferentiated granitic rocks of the Cretaceous Peninsular Ranges batholith, but to the west, includes widespread pre-batholithic Mesozoic rocks. The Perris block is underlain by a combination of batholithic and prebatholithic rocks, the latter consisting of metasedimentary rocks of low metamorphic grade; sub-greenschist grade. The most abundant lithology is phyllite but includes locally thick sections of impure quartzite. Minor sills, dikes, and small elongate plutons of fine-grained hornblende gabbro intrude the phyllite. Thin layers of tremolite-bearing marble occur locally. Also local are thin layers of manganese-bearing rocks. Both rhodonite and manganese oxides occur in these layers. The phyllite has a regular northwest strike throughout the main body of metamorphic rock giving rise to a homoclinal section over 25,000 feet thick. The layering-schistocity of these rocks is transposed bedding and is not stratigraphic thickness. In the northwest corner of the quadrangle is a series of Cretaceous volcanic and associated sedimentary rocks in the northwest corner of the quadrangle contain widespread primary sedimentary structures and appear to post date the metamorphism of the phyllite. The volcanic rocks are part of the Estelle Mountain volcanics of primarily rhyolitic composition. The sedimentary rocks are well indurated, perhaps incipiently metamorphosed, siliceous rocks containing local conglomerate beds. Parts of three plutonic complexes are included within the quadrangle, all part of the composite Peninsular Ranges batholith. In the southeast corner is the northwest part of the Paloma Valley ring complex, which is elliptical in plan and consists of an older ring-dike and two subsidiary short-arced dikes that were emplaced into gabbro by magmatic stoping. Small to large stoped blocks of gabbro are common within the ring-dikes. A younger ring-set, made up of hundreds of thin pegmatite dikes, occur largely within the central part of the complex. Only the northern part of the older ring dike occurs within the quadrangle. Stoped gabbro masses occur near the southeast margin of the quadrangle. In the northern part of the quadrangle is the southern part of the composite Gavilan ring complex of mostly tonalite composition. Hypersthene, although not usual in tonalite in the batholith, is a characteristic mineral of most of the rock of this complex. The Gavilan ring complex is a shallow intrusive that appears to be tilted up to the northeast. Fabric of the rocks changes in texture from hypauthomorphic-granular in the east to semiporphyritic in the west. The main part of the complex appears to have been emplaced by magmatic stoping. Several inactive gold mines, Goodhope, Gavilan, and Santa Rosa, are located within the complex. Within the Gavilan ring complex is the south-half of the Arroyo del Toro pluton. This near circular-in-plan pluton consists of massive-textured granodiorite that is essentially devoid of inclusions, and at one time was quarried for building stone. The Elsinore Fault Zone forms a complex series of pull-apart basins. The largest and most pronounced of these pull-apart basins forms a flat-floored closed depression, La Laguna, which is partly filled by Lake Elsinore. This basin forms the terminus for the San Jacinto River. During excessively wet periods the La Laguna fills and the overflow passes through Warm Springs Valley into Temescal Wash which joins the Santa Ana River at Corona. La Laguna, bounded by active faults, is flanked by both Pleistocene and Holocene alluvial fans emanating from both the Perris block and the Santa Ana Mountains. North of La Laguna are exposures of the Paleocene Silverado Formation. Clay beds of the Silverado Formation have been an important source of clay. Overlying the Silverado Formation are discontinuous exposures of conglomeratic younger Tertiary sedimentary rocks that are tentatively correlated with the Pauba Formation. Purpose: The data set for the Elsinore 7.5' quadrangle was prepared under the U.S. Geological Survey Southern California Areal Mapping Project (SCAMP) as part of an ongoing effort to develop a regional geologic framework of southern California and to utilize a Geographic Information System (GIS) format to create regional digital geologic databases. These regional databases are being developed as contributions to the National Geologic Map Database of the National Cooperative Geologic Mapping Program of the USGS. Supplemental_Information: None Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2003 Currentness_Reference: New data Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -117.37509053 East_Bounding_Coordinate: -117.24990947 North_Bounding_Coordinate: 33.74999995 South_Bounding_Coordinate: 33.62498421 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: geologic map Theme_Keyword: geology Theme_Keyword: bedrock geology Theme_Keyword: fault Place: Place_Keyword_Thesaurus: None Place_Keyword: California Place_Keyword: Riverside County Place_Keyword: Elsinore 7.5' quadrangle Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: Cretaceous tonalite Stratum_Keyword: Cretaceous granodiorite Stratum_Keyword: Mesozoic metamorphics Stratum_Keyword: Elsinore Fault Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: Mesozoic Temporal_Keyword: Cretaceous Temporal_Keyword: Elsinore Fault Access_Constraints: None Use_Constraints: The Elsinore 7.5' geologic-map database should be used to evaluate and understand the geologic character of the Elsinore 7.5' quadrangle as a whole. The data should not be used for purposes of site-specific land-use planning or site-specific geologic evaluations. The database is sufficiently detailed to identify and characterize many actual and potential geologic hazards represented by faults and landslides and 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). Use of this digital geologic-map database should not violate the spatial resolution of the data. Although the digital form of the data removes the constraint imposed by the scale of a paper map, the detail and accuracy inherent in map scale are also present in the digital data. The fact that this database was compiled and edited at a scale of 1:24,000 means that higher resolution information may not have been uniformly retained in the dataset. Plotting at scales larger than 1:24,000 will not yield greater real detail, although it may reveal fine-scale irregularities below the intended resolution of the database. Similarly, although higher resolution data is incorporated in most of the map, the resolution of the combined output will be limited by the lower resolution data. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Douglas M. Morton 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 Address: Department of Earth Sciences Address: University of California, Riverside City: Riverside State_or_Province: California Postal_Code: 92521 Country: USA Contact_Voice_Telephone: (909)276-6397 Contact_Facsimile_Telephone: (909)276-6295 Contact_Electronic_Mail_Address: scamp@usgs.gov Data_Set_Credit: Geologic mapping and digital preparation of this report were sponsored jointly by (1) the National Cooperative Geologic Mapping Program of the U.S. Geological Survey, (2) the California Geological Survey, and (3) the Southern California Areal Mapping Project (SCAMP). Native_Data_Set_Environment: SunOS, 5.7, sun4u UNIX ARC/INFO version 7.2.1 Cross_Reference: Citation_Information: Originator: Morton, D.M. Publication_Date: 1999 Title: Preliminary digital geologic map of the Santa Ana 30'x60' quadrangle, southern California, version 1.0. Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: USGS OF 99-172 Publication_Information: Publication_Place: Menlo Park, California Publisher: U.S. Geological Survey Online_Linkage: http://geopubs.wr.usgs.gov/open-file/of99-172 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Geologic-map units in the Elsinore quadrangle database were described using standard field methods. Consistent with these methods, the database author has assigned standard geologic attributes to geologic lines, points, and polygons identified in the database. Nation-wide geologic-map accuracy standards have not been developed and adopted by the U.S. Geological Survey and other earth-science entities. Until such standards are adopted, the SCAMP project has developed internal map-accuracy standards for 1:24,000-scale geologic maps produced by the project. Geologic lines and points on 1:24,000 scale geologic maps are judged to meet SCAMP's internal map-accuracy standards if they are located to within +/-15 meters, relative to topographic or cultural features on the base map. On any derivative geologic-map plot, line data that are judged to meet the SCAMP internal map-accuracy standard are denoted by solid lines; line data that may not meet the SCAMP internal map-accuracy standard are denoted by dashed or dotted lines. There is no cartographic device for denoting the map-accuracy for geologic-point data (e.g., symbols representing bedding, foliation, lineations, etc.). Logical_Consistency_Report: Polygon and chain-node topology present. The areal extent of the map is represented digitally by an appropriately projected (polyconic 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 which are themselves a set of sequentially numbered coordinate pairs. Point data are represented by coordinate pairs. Completeness_Report: The geologic map database of the Elsinore 7.5' quadrangle contains new data that have been subjected to rigorous review and are a substantially complete representation of the current state of knowledge concerning the geology of the quadrangle. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The maximum transformation RMS error acceptable for a 7.5' quadrangle transformation and data input is 0.003 (1.8 meters). Horizontal positional accuracy was checked by visual comparison of hard-copy plots with base-stable source data. Lineage: Process_Step: Process_Description: Field mapping and aerial photograph interpretation; iterative process (D.M. Morton). Process_Date: 1978,1998 Process_Step: Process_Description: Field mapping and aerial photograph interpretation; iterative process (F.H. Weber, Jr.). Process_Date: 1973-77 Process_Step: Process_Description: Digitization of geologic linework and point data from a scale-stable cartographic base of quadrangle. ARC/INFO database established; cleanup of artifacts; polygon, arc, and point attribute tables established. Digitizing and editing artifacts significant enough to display at a scale of 1:24,000 were corrected (R.M. Alvarez and Diane Burns). Process_Date: 1999-2001 Process_Step: Process_Description: Description of map units and correlation of map units (R.M. Alvarez). Process_Date: 2003 Process_Step: Process_Description: First draft of metadata created by R.M. Alvarez using FGDCMETA.AML ver. 1.2 05/14/98 on ARC/INFO data set /scamp27/elsinore/els_geo Process_Date: 20030319 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 296 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 749 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Point_and_Vector_Object_Count: 297 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Polyconic Polyconic: Latitude_of_Projection_Origin: 33.625 Longitude_of_Central_Meridian: -117.3125 False_Easting: 0.00000 False_Northing: 0.00000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 1.0 Ordinate_Resolution: 1.0 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.98 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: Version 1.0 of the Elsinore 7.5' quadrangle comprises three ARC/INFO coverages, of which two contain geologic data, and one contains cartographic features: els_geo (geology), els_str (structural data), and els_ano (annotation and leaders). Geologic data represented by line entities and the polygons they delineate are contained in the coverage ELS_GEO. For display purposes, the annotation coverage contains one annotation subclass: anno.geo contains unit labels. Geological point data includes site-specific information describing the types and the orientation of bedding and foliation. Annotation is respective dip and plunge values associated with individual point data. ELS_GEO.PAT: COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME 1 AREA 8 18 F 5 9 PERIMETER 8 18 F 5 17 ELS_GEO# 4 5 B - 21 ELS_GEO-ID 4 5 B - 25 LABL 35 35 C - 60 PLABL 35 35 C - 95 NAME 100 100 C - 195 SHD 3 3 I - 198 SHDFIL 3 3 I - ELS_GEO.AAT: COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME 1 FNODE# 4 5 B - 5 TNODE# 4 5 B - 9 LPOLY# 4 5 B - 13 RPOLY# 4 5 B - 17 LENGTH 8 18 F 5 25 ELS_GEO# 4 5 B - 29 ELS_GEO-ID 4 5 B - 33 LTYPE 35 35 C - 68 L-SYMB 3 3 I - Entity_and_Attribute_Detail_Citation: None Detailed_Description: Entity_Type: Entity_Type_Label: els_geo.pat Entity_Type_Definition: Geologic units (LABL) and their corresponding names (NAME) identified in the Elsinore 7.5' quadrangle Attribute: Attribute_Label: LABL Attribute_Definition: geologic map unit label, in plain text Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Qaf Enumerated_Domain_Value_Definition: Artificial fill Enumerated_Domain: Enumerated_Domain_Value: Qw Enumerated_Domain_Value_Definition: Very young wash deposits Enumerated_Domain: Enumerated_Domain_Value: Qf Enumerated_Domain_Value_Definition: Very young alluvial-fan deposits Enumerated_Domain: Enumerated_Domain_Value: Ql Enumerated_Domain_Value_Definition: Very young lacustrine deposits Enumerated_Domain: Enumerated_Domain_Value: Qyw Enumerated_Domain_Value_Definition: Young alluvial-wash deposits Enumerated_Domain: Enumerated_Domain_Value: Qyf Enumerated_Domain_Value_Definition: Young alluvial-fan deposits Enumerated_Domain: Enumerated_Domain_Value: Qyf1 Enumerated_Domain_Value_Definition: Young alluvial-fan deposits, Unit 1 Enumerated_Domain: Enumerated_Domain_Value: Qya Enumerated_Domain_Value_Definition: Young alluvial-channel deposits Enumerated_Domain: Enumerated_Domain_Value: Qyv Enumerated_Domain_Value_Definition: Young alluvial-valley deposits Enumerated_Domain: Enumerated_Domain_Value: Qof Enumerated_Domain_Value_Definition: Old alluvial-fan deposits Enumerated_Domain: Enumerated_Domain_Value: Qof1 Enumerated_Domain_Value_Definition: Old alluvial-fan deposits, Unit 1 Enumerated_Domain: Enumerated_Domain_Value: Qoa Enumerated_Domain_Value_Definition: Old alluvial-channel deposits Enumerated_Domain: Enumerated_Domain_Value: Qvof Enumerated_Domain_Value_Definition: Very old alluvial-fan deposits Enumerated_Domain: Enumerated_Domain_Value: Qvoa Enumerated_Domain_Value_Definition: Very old alluvial-channel deposits Enumerated_Domain: Enumerated_Domain_Value: Qpf Enumerated_Domain_Value_Definition: Pauba Formation Enumerated_Domain: Enumerated_Domain_Value: Qpfs Enumerated_Domain_Value_Definition: Pauba Formation, sandstone member Enumerated_Domain: Enumerated_Domain_Value: Tcg Enumerated_Domain_Value_Definition: Conglomerate Enumerated_Domain: Enumerated_Domain_Value: Tsi Enumerated_Domain_Value_Definition: Silverado Formation Enumerated_Domain: Enumerated_Domain_Value: Kgt Enumerated_Domain_Value_Definition: Gavilan ring complex, massive textured tonalite Enumerated_Domain: Enumerated_Domain_Value: Kgh Enumerated_Domain_Value_Definition: Gavilan ring complex, hypabyssal tonalite Enumerated_Domain: Enumerated_Domain_Value: Katg Enumerated_Domain_Value_Definition: Granodiorite of Arroyo del Toro pluton Enumerated_Domain: Enumerated_Domain_Value: Kgbf Enumerated_Domain_Value_Definition: Fine grained hornblende gabbro, Railroad Canyon area Enumerated_Domain: Enumerated_Domain_Value: Kpvg Enumerated_Domain_Value_Definition: Paloma valley ring complex Enumerated_Domain: Enumerated_Domain_Value: Kgd Enumerated_Domain_Value_Definition: Granodiorite, undifferentiated Enumerated_Domain: Enumerated_Domain_Value: Kgb Enumerated_Domain_Value_Definition: Gabbro Enumerated_Domain: Enumerated_Domain_Value: Khg Enumerated_Domain_Value_Definition: Heterogeneous granitic rocks Enumerated_Domain: Enumerated_Domain_Value: Kvsp Enumerated_Domain_Value_Definition: Santiago Peak Volcanics Enumerated_Domain: Enumerated_Domain_Value: Kvem Enumerated_Domain_Value_Definition: Estelle Mountain volcanics of Herzig Enumerated_Domain: Enumerated_Domain_Value: Kvs Enumerated_Domain_Value_Definition: Intermixed Estelle Mountain volcanics of Herzig(Cretaceous) and sedimentary rocks(Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: Ksv Enumerated_Domain_Value_Definition: Intermixed Estelle Mountain volcanics of Herzig(Cretaceous) and sedimentary rocks(Mesozoic) Enumerated_Domain: Enumerated_Domain_Value: Mzu Enumerated_Domain_Value_Definition: Metasedimentary rocks, undifferentiated Enumerated_Domain: Enumerated_Domain_Value: Mzq Enumerated_Domain_Value_Definition: Quartz-rich rocks Enumerated_Domain: Enumerated_Domain_Value: Mzp Enumerated_Domain_Value_Definition: Phyllite Enumerated_Domain: Enumerated_Domain_Value: Mzm Enumerated_Domain_Value_Definition: Marble Attribute: Attribute_Label: PLABL Attribute_Definition: Geological map unit label used to generate plot labels with relevant stratigraphic symbols. The geologic units with LABL designating Mesozoic (Mz) have keystroke substitute characters, }, that call their corresponding symbols from the Geoage Font Group. Geologic map unit labels will plot on derivative map plots with appropriate stratigraphic symbols if PLABL is used as the source for unit labels. Attribute: Attribute_Label: SHD Attribute_Definition: polygon color (as integer value) from shadeset alc1.shd Attribute: Attribute_Label: SHDFIL Attribute_Definition: polygon fill pattern (as integer value) from shadeset geology2.shd Attribute: Attribute_Label: NAME Attribute_Definition: Geologic name of map unit (see list under LABL attribute) Detailed_Description: Entity_Type: Entity_Type_Label: els_geo.aat Entity_Type_Definition: Geologic features such as contacts and faults that bound rock-unit polygons Attribute: Attribute_Label: LTYPE Attribute_Definition: Description of types of lines on the geologic map (contact, fault). Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: contact, certain Enumerated_Domain: Enumerated_Domain_Value: fault, certain Enumerated_Domain: Enumerated_Domain_Value: fault, approx. located Enumerated_Domain: Enumerated_Domain_Value: fault, concealed Detailed_Description: Entity_Type: Entity_Type_Label: els_str.pat Entity_Type_Definition: Geological point data includes site-specific information describing the types and the orientation of bedding, foliation, joints, and lineations. One annotation subclass is included in the geologic points coverage, ELS_STR which displays the respective dip and plunge values associated with individual point data. Attribute: Attribute_Label: PTTYPE Attribute_Definition: Describes type of point data (bedding, foliation) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: sedimentary bedding Enumerated_Domain: Enumerated_Domain_Value: igneous foliation Enumerated_Domain: Enumerated_Domain_Value: metamorphic foliation Enumerated_Domain: Enumerated_Domain_Value: vertical metamorphic foliation Attribute: Attribute_Label: PT-SYMB Attribute_Definition: Coded integer value that relates point to cartographic point symbol in markerset geoscamp2.mrk Attribute: Attribute_Label: STRIKE Attribute_Definition: Azimuthal strike of planar feature Attribute: Attribute_Label: DIP Attribute_Definition: Dip of planar feature Detailed_Description: Entity_Type: Entity_Type_Label: els_ano.aat Entity_Type_Definition: Annotation leaders Attribute: Attribute_Label: LTYPE Attribute_Definition: Description of types of lines in coverage (annotation leaders) Attribute: Attribute_Label: L-SYMB Attribute_Definition: Coded integer value (1) that relates arcs to cartographic line symbol in lineset, geoscamp2.lin 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: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: (303)202-4700 Contact_Facsimile_Telephone: (303)202-4693 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 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 Elsinore 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 (e.g., 1:12,000). Metadata_Reference_Information: Metadata_Date: 20030319 Metadata_Review_Date: 20030610 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Rachel M. Alvarez Contact_Position: Geologist Contact_Address: Address_Type: mailing address Address: U.S. Geological Survey Address: Department of Earth Sciences Address: University of California, Riverside City: Riverside State_or_Province: California Postal_Code: 92521 Country: USA Contact_Voice_Telephone: (909)276-6397 Contact_Facsimile_Telephone: (909)276-6295 Contact_Electronic_Mail_Address: ralvarez@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: None Metadata_Use_Constraints: None 18