Identification_Information: Citation: Citation_Information: Originator: Scott A. Minor Originator: Karl S. Kellogg Originator: Richard G. Stanley Originator: Larry D. Gurrola Originator: Edward A. Keller Originator: Theodore R. Brandt Publication_Date: 2009 Title: Geologic Map of the Santa Barbara Coastal Plain Area, Santa Barbara County, California Edition: 1.0 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: USGS Scientific Investigations Map Issue_Identification: SIM 3001 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/sim/3001 Description: Abstract: This report presents a newly revised and expanded digital geologic map of the Santa Barbara coastal plain area at a compilation scale of 1:24,000¹ (one inch on the map to 2,000 feet on the ground) and with a horizontal positional accuracy of at least 20 m. The map depicts the distribution of bedrock units and surficial deposits and associated deformation underlying and adjacent to the coastal plain within the contiguous Dos Pueblos Canyon, Goleta, Santa Barbara, and Carpinteria 7.5’ quadrangles (fig. 2). The new map supersedes an earlier preliminary geologic map of the central part of the coastal plain (Minor and others, 2002) that provided coastal coverage only within the Goleta and Santa Barbara quadrangles. In addition to new mapping to the west and east, geologic mapping in parts of the central map area has been significantly revised from the preliminary map compilation -- especially north of downtown Santa Barbara in the Mission Ridge area -- based on new structural interpretations supplemented by new biostratigraphic data. All surficial and bedrock map units, including several new units recognized in the areas of expanded mapping, are described in detail in the accompanying pamphlet. Abundant new biostratigraphic and biochronologic data based on microfossil identifications are presented in expanded unit descriptions of the marine Neogene Monterey and Sisquoc Formations. Site-specific fault kinematic observations embedded in the digital map database are more complete owing to the addition of slip-sense determinations. Finally, the pamphlet accompanying the present report includes an expanded and refined summary of stratigraphic and structural observations and interpretations that are based on the composite geologic data contained in the new map compilation. The Santa Barbara coastal plain is located in the western Transverse Ranges physiographic province along an east-west-trending segment of the southern California coastline about 100 km (62 mi) northwest of Los Angeles. The coastal plain is defined here as the relatively low elevation (lower than 150 to 300 m [500 to 1,000 feet], depending on location), low- to moderate-relief piedmont that generally slopes gently seaward from the steep Santa Ynez Mountains range front on the north to the Santa Barbara Channel on the south. The coastal plain obtains a maximum width of about 7 km near the cities of Santa Barbara and Goleta, and narrows to 3 km or less several kilometers west of Goleta and near Carpinteria. The coastal plain surface includes several mesas and hills that are geomorphic expressions of potentially active folds and partly buried oblique and reverse faults of the Santa Barbara fold and fault belt (SBFFB) that transects the coastal plain. Strong earthquakes have occurred offshore within 10 km of the Santa Barbara coastal plain in 1925 (6.3 magnitude), 1941 (5.5 magnitude) and 1978 (5.1 magnitude). These and numerous smaller seismic events located beneath and offshore of the coastal plain, likely occurred on reverse-oblique-slip faults that are similar to, or continuous with, Quaternary reverse faults crossing the coastal plain. Thus, faults of the SBFFB pose a significant earthquake hazard to the approximately 200,000 people living within the major coastal population centers of Santa Barbara, Goleta, and Carpinteria. In addition, numerous Quaternary landslide deposits along the steep southern flank of the Santa Ynez Mountains indicate the potential for continued slope failures and mass movements in developed areas. Folded, faulted, and fractured sedimentary rocks in the subsurface of the coastal plain and adjacent Santa Barbara Channel are sources and form reservoirs for economic deposits of oil and gas, some of which are currently being extracted offshore. Shallow, localized sedimentary aquifers underlying the coastal plain provide limited amounts of water for the urban areas, but the quality of some of this groundwater is compromised by coastal salt-water contamination. The present map compilation provides a set of uniform geologic digital coverages that can be used for analysis and interpretation of these and other geologic hazards and resources in the coastal plain region. ¹The map and database were compiled at a scale of 1:24,000, but the printed map scale is 1:25,000 due to printing press size limitations. Purpose: To update the interpretation of geologic mapping and to achieve a uniform regional geologic database. Additionally, to provide a geologic map for the public and geoscience community to aid in assessments and mitigation of geologic hazards in the Santa Barbara coastal plain region and to provide sufficient geologic information for land-use and land-management decisions. Supplemental_Information: Map political location: Santa Barbara County, California Compilation scale: 1:24,000 Base maps used are the U.S. Geological Survey 7.5 minute topographic quadrangles for Carpenteria, Calif., Dos Pueblos Canyon, Calif., Goleta, Calif. and Santa Barbara, Calif. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2009 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: none currently planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -120.00000 East_Bounding_Coordinate: -119.50000 North_Bounding_Coordinate: 34.50000 South_Bounding_Coordinate: 34.37500 Keywords: Theme: Theme_Keyword_Thesaurus: AGI Glossary of Geology Theme_Keyword: neotectonic deformation Theme_Keyword: invertebrate fossils Theme_Keyword: sedimentary rock Theme_Keyword: fault-propagation fold Theme_Keyword: hazards Place: Place_Keyword_Thesaurus: U.S. Board of Geographic Names (BGN) Geographic Names Information System (GNIS) Place_Keyword: USA Place_Keyword: California Place_Keyword: Santa Barbara County Place_Keyword: Santa Barbara coastal plain Temporal: Temporal_Keyword_Thesaurus: Geologic Names Committee Lexicon (Geolex) Temporal_Keyword: Cenozoic Temporal_Keyword: Tertiary Temporal_Keyword: Quaternary Access_Constraints: none Use_Constraints: None. Users of this geospatial database and geologic information derived there from should acknowledge the U.S. Geological Survey as the source of the data. Although software enables a user to display images at various scales, map data in this report should not be used at scales greater than 1:24,000. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Scott A. Minor Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing Address: P.O. Box 25046, MS 980 Address: Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: 303-236-0303 Contact_Electronic_Mail_Address: sminor@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/sim/3001/downloads/3001.pdf/ Browse_Graphic_File_Description: graphic representation of map layout Browse_Graphic_File_Type: PDF Data_Set_Credit: Our recent preliminary geologic map of the central part of the coastal plain (Goleta and Santa Barbara quadrangles) (Minor and others, 2002) provided an initial revised geologic depiction of the coastal region and formed a framework for producing the present map. The present geologic compilation of the Santa Barbara coastal plain, along with the preliminary compilation, comprise new, original mapping based on field and aerial-photo geologic observations and interpretations supplemented by new biostratigraphic identifications. Although these new compilations broadly resembles the earlier Dibblee mapping (see accompanying text pamphlet for references) that has served as the principal geologic map reference in the coastal plain area, they differ significantly in the amount of stratigraphic and structural detail which results in new geologic interpretations that are depicted on the map. All of the new geologic mapping and interpretations presented in this report are based strictly on observations made on the ground surface or in shallow surface excavations. The mapping results from the collaborative efforts of geologists with the U.S. Geological Survey Southern California Areal Mapping Project (SCAMP) (Minor, Kellogg, and Stanley) and the tectonic geomorphology research group at the University of California at Santa Barbara (Gurrola and Keller). Minor and Kellogg conducted most of the geologic mapping inland of the sea cliffs, with Minor’s efforts focused on the coastal piedmont and lower flanks of the Santa Ynez Mountains in the Goleta, Santa Barbara, and Carpinteria quadrangles and Kellogg’s mapping concentrated in the Dos Pueblos quadrangle and the more mountainous, northern parts of the Goleta and Carpinteria quadrangles. Minor also conducted most of the fault kinematic observations and measurements in the map area. Stanley chiefly mapped and documented stratigraphic details of the Miocene and Pliocene marine rocks exposed along the sea cliffs in all four of the component 7.5’ quadrangles. Earlier and concurrent mapping and geochronologic, geomorphic, and paleoseismic investigations of locally deformed coastal Quaternary deposits and marine terraces by Gurrola and Keller (Keller and Gurrola, 2000; Gurrola and others, 2001) provided a working model of the Quaternary stratigraphic framework and structural style on the coastal plain, which, in turn, significantly influenced our geologic interpretations during the mapping campaign. T.R. Brandt assisted in the design and editing of the GIS database and performed database integration. Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Data were entered and checked by the geologist that made the field observations. The attributes of this geospatial data set consist of text identifiers and numeric codes that indicate the identity of the geologic unit or type of geologic feature, and determine how each feature is colored or symbolized. To check attribute accuracy, a color check plot was visually compared to the geologist's original compilation. Discrepancies between the digital geospatial dataset and the original analog or digital compilation were corrected as needed. Machine-created listings of unique attribute values were used to identify spelling errors or other inconsistencies, and corrections were made as needed. Logical_Consistency_Report: Map elements were visually checked for overshoots, undershoots, duplicate features, polygon closure, and other errors by the lead author and by the GIS technician(s) that created the digital database. Automated (ArcInfo) routines were also used to check the databases for polygon label errors, line or point attribution errors, sliver polygons, dangling arcs, intersection errors, and projection information. Check plots of the map were reviewed by at least one other geologist for consistency with basic geologic principles and general conformity to USGS mapping standards. Completeness_Report: Data are complete: no features that could be accurately represented at the compilation scale of 1:24,000 were eliminated or generalized. The smallest area represented is approximately 110 square meters. All geospatial database elements are attributed. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Lines were primarily mapped by one of the following methods: (1) photo-interpretation and annotation of ~1:24,000-scale color (1999) and black-and-white (1928) aerial photographs; or (2) annotation of 1:24,000-scale topographic base maps. Most point observation locations were determined in the field using hand-held GPS receivers with horizontal accuracy of about 10 m. Map data were digitized by one of the following methods: (1) heads-up screen digitization of line data mapped on aerial photographs using rectified and georeferenced digital orthophoto quarter quadrangles (DOQQ's) with ground resolution of 1 meter; (2) heads-up screen digitization of mapped data using raster images of topographic base maps to an estimated horizontal accuracy of about 10 m; (3) digitization of photo-interpreted map data using a digital PG-2 photogrammetric plotter that rectifies and georeferences the data to a horizontal accuracy of about 10 m; (4) digitization of data mapped directly on scale-stable copies of the topographic base maps using a digitizer tablet with a resolution of 0.001 inch and an estimated horizontal accuracy of at least 10 m; or (5) scanning and vectorization of map data on scale- stable mylars registered to the base maps. Most digitized positions on the map are estimated to have better than 20 m horizontal accuracy. There is no elevation data in the database. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Gurrola, L.D. Originator: Selting, A.J. Originator: Keller, E.A. Originator: Tierney, T.E. Originator: Hartleb, R.D. Originator: Trecker, M.A. Originator: Dibblee, T.W., Jr. Title: Neotectonics of the Santa Barbara fold belt, California, with a section on Investigation of the Mission debris flow deposit, Santa Barbara, California, by A.J. Selting, A.J. and R.J. Urban, in Dunne, G., and Cooper, J., compilers, Geologic excursions in southwestern California Publication_Date: 2001 Series_Information: Series_Name: Society of Economic Paleontologists and Mineralogists, Pacific Section Issue_Identification: book 89 Other_Citation_Details: p. 21-100 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2001 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Gurrola and others (2001) Source_Contribution: information used in compilation of map Source_Information: Source_Citation: Citation_Information: Originator: Keller, E.A. Originator: Gurrola, L.D. Title: Final report, July, 2000, Earthquake hazard of the Santa Barbara fold belt, California Publication_Date: 2000 Series_Information: Series_Name: NEHRP Final Report Issue_Identification: .None Other_Citation_Details: online at http://www.scec.org/research/98research/98gurrolakeller.pdf Type_of_Source_Media: electronic Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2000 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Keller and Gurrola (2000) Source_Contribution: information used in compilation of map Source_Information: Source_Citation: Citation_Information: Originator: Lewis, R. S. Originator: Derkey, P. D. Title: Digital geologic map of part of the Thompson Falls 1:100,000 quadrangle, Idaho Publication_Date: 1999 Series_Information: Series_Name: U.S. Geological Survey Open File Report Issue_Identification: OFR 99-438 Source_Scale_Denominator: 100000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1999 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Lewis and Derkey (1999) Source_Contribution: GIS database structure source Source_Information: Source_Citation: Citation_Information: Originator: Minor, S.A. Originator: Kellogg, K.S. Originator: Stanley, R.G. Originator: Stone, Paul Originator: Powell, C.L., II Originator: Gurrola, L.D. Originator: Selting, A.J. Originator: Brandt, T.R. Title: Preliminary geologic map of the Santa Barbara coastal plain area, Santa Barbara County, California Publication_Date: 2002 Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 02-0136 Other_Citation_Details: version 1.2, 22 p., scale 1:24,000, online at: http://pubs.usgs.gov/of/2002/ofr-02-0136/ Source_Scale_Denominator: 24000 Type_of_Source_Media: electronic Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2006 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Minor and others (2002) Source_Contribution: information used in compilation of map Process_Step: Process_Description: Geology was mapped during the period 1999 to 2001. Process_Date: 2001 Process_Step: Process_Description: Part of the geologic database was digitized using the GSMCAD public domain program (USGS Open-File Report 96-007). Process_Date: 2001 Process_Step: Process_Description: Part of the geologic database was digitized using Adobe Illustrator commercial software Process_Date: 2001 Process_Step: Process_Description: Part of the geologic database was digitized by digital scanning of map linework drawn on stable-base mylars. Process_Date: 2001 Process_Step: Process_Description: That part of the geologic database digitized in GSMCAD was exported to ESRI ArcView commercial software by conversion first to ARC generate ASCII files and then to ARCVIEW shape files. Process_Date: 2001 Process_Step: Process_Description: Those parts of the geologic database digitized in Adobe Illustrator or by scanning were exported to ArcInfo commercial GIS software, converted to coverages, and exported to ArcView as shape files. Process_Date: 2001 Process_Step: Process_Description: Separately imported parts of geologic database were merged and edited in ArcView and then exported to ArcInfo as coverages. Process_Date: 2001 Process_Step: Process_Description: Geologic polygon, line, and point features were attributed in ARCINFO. Process_Date: 2001 Process_Step: Process_Description: CODE, P1, and P2 values inherited from GSMCAD were dropped from each cover or renamed to more descriptive attribute names where appropriate. Process_Date: 2001 Process_Step: Process_Description: Checkplots of the coverages were printed and checked against source materials for accuracy and completeness. The database information was checked visually and using various routines in ArcInfo for accuracy and consistency. Minor revisions were made for OFR 02-0136 Ver. 1.1. Minor and others (2002) Process_Date: 2003 Process_Step: Process_Description: Metadata created by Ted Brandt for OFR Ver. 1.1. Process_Date: 2003 Process_Step: Process_Description: Revisions were made to the geologic database to reflect revisions to the geologic mapping in the Mission Ridge-Lauro Canyon Dam area overlapping northern Santa Barbara and north of Goleta along a strip adjacent to the northern border of the map area. Also, additional fault-attitude and slip-lineation data from throughout the map area have been added to the map database. These revisions and additions resulted from new field work conducted since the last release in OFR 02-0136 Ver. 1.1 Minor and others (2002). Process_Date: 2006 Process_Step: Process_Description: Metadata created by Ted Brandt for OFR Ver. 1.2. Process_Date: 2006 Process_Step: Process_Description: ArcInfo coverages for portions of the Dos Pueblos and Carpenteria quadrangles were imported from GSMCAD and reattributed for this publication. Geological features for the entire study area were then revised and additional features digitized in ARCINFO. A geo-registered base map mosaic and a 10-meter DEM hillshade of the 4 quad area were also generated. Revisions and additional fault-attitude and slip-lineation data from throughout the map area have been added to the map database. These revisions and additions resulted from new field work conducted since the last release in 2006. Process_Date: 2007 Process_Step: Process_Description: Metadata created by Ted Brandt. Process_Date: 2008 Process_Step: Process_Description: Metadata reviewed and revised by Ted Brandt. Process_Date: 2009 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Polyconic Polyconic: Longitude_of_Central_Meridian: -119.75 Latitude_of_Projection_Origin: 34.375 False_Easting: 0.00000 False_Northing: 0.00000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.2 Ordinate_Resolution: 0.2 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: The data are supplied in ArcInfo export format and ArcView shapefile format. DATABASE STRUCTURE - ArcInfo ==================================== This GIS database includes related look-up tables, which store detailed attribute information. This database structure is more fully described in USGS OFR 99-438. The GIS database structure used in database includes symbol and pattern items in coverage point, polygon (PAT) and arc (AAT)attribute tables for user convenience. ArcInfo relates for each coverage are saved in a file named .rel. Use the RELATE command with the restore argument at the arc prompt to make the relates active. Alternatively, in Arctools, use the Relate environment: open dialog in the Manage - Relates flyout menu under the Arctools menu to make the relates active. sbgeos coverage: Contains all contact lines and label points for each geologic polygon. In the sbgeos.pat INFO file the SOURCE item provides a numeric code used to identify the data source for the rock unit. Complete references for the sources listed are listed in the sbgeos.ref file. The LABEL item indicates the rock unit label (abbreviation) used to label unit on map. The DESC item defines formal or informal unit name. The SYMBOL item contains the shadeset symbol number used by ArcInfo to plot a filled/shaded polygon. The symbol numbers in this item refer to the wpgcmykg.shd shadeset included with the dataset. In the coverage's sbgeos.aat INFO file the LINECODE item provides a numeric code used to identify type of linear feature. Linecodes < 100 are used for contacts and boundaries which are described in the sbgeos.con file. Linecodes greater than 100 are used for structures that are described in the sbgeos.str file. The NAME item lists the name given to structural feature. The SOURCE item lists the numeric code used to identify the data source for the linear feature. The SYMBOL item lists the line symbol number used by ArcInfo to plot the line (symbol numbers refer to the geol_sfo.lin lineset). Complete references for the sources are listed in the sbgeoss.ref file. Related look-up table files are sbgeos.con, sbgeos.str, and sbgeos.ref. In the sbgeos.con INFO file, the LINECODE item indicates the numeric code (a value < 100) used to identify type of contact or boundary. The SYMBOL item lists the line symbol number used by ArcInfo to plot the line (Symbol numbers refer to the geol_sfo.lin lineset). The TYPE item lists the major type of line, e.g., contact, state boundaries, lines of latitude and longitude used for neatlines. The MODIFIER item lists the line-type modifier, i.e., approximate, concealed, or gradational. No entry implies 'known.' The CERTAINTY item lists the degree of certainty of contact or boundary, i.e., inferred or uncertain. No entry implies 'certain.' The DESC item lists the written description or explanation of the contact or boundary. In the sbgeos.str INFO file, the LINECODE item indicates the numeric code (a value > 100) used to identify type of structure. The SYMBOL item lists the line symbol number used by ArcInfo to plot the line (Symbol numbers refer to the geol_sfo.lin lineset). The TYPE item lists the major type of line, e.g., fault, or fold-axis. The HORIZONTAL item refers to the type of horizontal fault movement, e.g., left- lateral, right-lateral. No entry implies 'unknown.' The VERTICAL item refers to the type of vertical fault movement, e.g., normal. No entry implies 'unknown.' The FOLD item refers to the type of fold, e.g., anticline, syncline. The PLUNGE item refers to the type of plunge on fold, i.e., horizontal, plunging, plunging in, plunging out. The ACCURACY item refers to the line type modifier indicating degree of accuracy, i.e., approximately located, concealed, gradational. No entry implies 'certain.' The CERTAINTY item lists the degree of certainty of contact or boundary, i.e., inferred or uncertain. No entry implies 'certain.' The DESC item lists the written description or explanation of the contact or boundary. The DESC item lists the formal or informal unit name. In the sbgeos.ref INFO file, the SOURCE item lists the numeric code used to identify the data source. The SCALE item lists the scale of the source map. (This value is the denominator of the proportional fraction that identifies the scale of the map that was digitized or scanned to produce the digital map.) The AUTHORS item lists the author(s) or compiler(s) of source map entered as last name, first name or initial, and middle initial. The YEAR item lists the source (map) publication date. The REFERENCE item lists the remainder of the reference in USGS reference format. The INFO structure of these files is listed below: > >SBGEOS.PAT: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 AREA 8 18 F 5 > 9 PERIMETER 8 18 F 5 > 17 SBGEOS# 4 5 B - > 21 SBGEOS-ID 4 5 B - > 25 SOURCE 4 4 I - > 29 LABEL 10 10 C - > 39 DESC 100 100 C - > 139 SYMBOL 3 3 I - > > >SBGEOS.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 SBGEOS# 4 5 B - > 29 SBGEOS-ID 4 5 B - > 33 LINECODE 3 3 I - > 36 NAME 80 80 C - > 116 SOURCE 4 4 I - > 120 SYMBOL 3 3 I - > > >SBGEOS.CON: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 LINECODE 3 3 I - > 4 SYMBOL 3 3 I - > 7 TYPE 10 10 C - > 17 MODIFIER 20 20 C - > 37 CERTAINTY 15 15 C - > 52 DESC 100 100 C - > > >SBGEOS.STR: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 LINECODE 3 3 I - > 4 SYMBOL 3 3 I - > 7 TYPE 10 10 C - > 17 HORIZONTAL 20 20 C - > 37 VERTICAL 20 20 C - > 57 FOLD 15 15 C - > 72 PLUNGE 15 15 C - > 87 ACCURACY 15 15 C - > 102 CERTAINTY 15 15 C - > 117 DESC 100 100 C - > > >SBGEOS.REF: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 SOURCE 4 4 I - > 5 SCALE 8 8 I - > 13 AUTHORS 200 200 C - > 213 YEAR 4 4 I - > 217 REFERENCE 250 250 C - sbfold coverage: Contains fold axis lines. In the coverage's sbfold.aat INFO file the LINECODE item provides a numeric code used to identify type of linear feature. Linecodes > 100 are used for structures which are described in the sbfold.str file. The NAME item lists the name given to structural feature. The SOURCE item lists the numeric code used to identify the data source for the linear feature. The SYMBOL item lists the line symbol number used by ArcInfo to plot the line (symbol numbers refer to the geol_sfo.lin lineset). Complete references for the sources are listed in the sbfold.ref file. Related look-up table files are sbfold.con, sbfold.str, and sbfold.ref. In the sbfold.con INFO file, the LINECODE item indicates the numeric code (a value < 100) used to identify type of contact or boundary. The SYMBOL item lists the line symbol number used by ArcInfo to plot the line (Symbol numbers refer to the geol_sfo.lin lineset). The TYPE item lists the major type of line, e.g., contact, state boundaries, lines of latitude and longitude used for neatlines. The MODIFIER item lists the line-type modifier, i.e., approximate, concealed, or gradational. No entry implies 'known.' The CERTAINTY item lists the degree of certainty of contact or boundary, i.e., inferred or uncertain. No entry implies 'certain.' The DESC item lists the written description or explanation of the contact or boundary. In the sbfold.str INFO file, the LINECODE item indicates the numeric code (a value > 100) used to identify type of structure. The SYMBOL item lists the line symbol number used by ArcInfo to plot the line (Symbol numbers refer to the geol_sfo.lin lineset). The TYPE item lists the major type of line, e.g., fault, or fold-axis. The HORIZONTAL item refers to the type of horizontal fault movement, e.g., left-lateral, right-lateral. No entry implies 'unknown.' The VERTICAL item refers to the type of vertical fault movement, e.g., normal. No entry implies 'unknown.' The FOLD item refers to the type of fold, e.g., anticline, syncline. The PLUNGE item refers to the type of plunge on fold, i.e., horizontal, plunging, plunging in, plunging out. The ACCURACY item refers to the line type modifier indicating degree of accuracy, i.e., approximately located, concealed, gradational. No entry implies 'certain.' The CERTAINTY item lists the degree of certainty of contact or boundary, i.e., inferred or uncertain. No entry implies 'certain.' The DESC item lists the written description or explanation of the contact or boundary. The INFO structure of these files is listed below: >SBFOLD.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 SBFOLD# 4 5 B - > 29 SBFOLD-ID 4 5 B - > 33 LINECODE 3 3 I - > 36 NAME 80 80 C - > 116 SOURCE 4 4 I - > 120 SYMBOL 3 3 I - > > >SBFOLD.CON: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 LINECODE 3 3 I - > 4 SYMBOL 3 3 I - > 7 TYPE 10 10 C - > 17 MODIFIER 20 20 C - > 37 CERTAINTY 15 15 C - > 52 DESC 100 100 C - > > >SBFOLD.STR: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 LINECODE 3 3 I - > 4 SYMBOL 3 3 I - > 7 TYPE 10 10 C - > 17 HORIZONTAL 20 20 C - > 37 VERTICAL 20 20 C - > 57 FOLD 15 15 C - > 72 PLUNGE 15 15 C - > 87 ACCURACY 15 15 C - > 102 CERTAINTY 15 15 C - > 117 DESC 100 100 C - sbpnt coverage: Contains points recording site-specific observations and measurements, such as strike and dip of bedding. In the sbpnt.pat INFO file the PTTYPE item lists the type of point symbol, e.g., strike and dip of inclined bedding. The SYMBOL item lists the marker symbol used by ArcInfo to identify the type of structural map symbol(Symbol numbers refer to the geoscamp2.mrk markerset). The STRIKE item contains the strike of bedding as well as trend of fold axis, where applicable. Strike is an azimuthal angle. Measured in degrees from 0 to 360 in a clockwise direction from North, the STRIKE value also specifies the dip direction, where the dip direction is 90 degrees clockwise relative to the STRIKE. The DIP item contains the dip of bedding as well as plunge angles, where applicable. This value is an angle measured (in degrees 0 to 90) down from the horizontal; thus a horizontal dip is 0 degrees and a vertical dip is 90 degrees. The SOURCE item lists the numeric code used to identify the data source for the point feature. The SENSCODE and SLIPSENS items are numerical codes and corresponding textual descriptors, respectively, that describe the fault slip sense determined at the location along the fault trace where the associated slip lineation was measured. "Fault slip sense" refers to the sense or direction of movement of the block of rock on one side of a fault relative to the block on the other side of the fault. A fault may have one of four possible primary slip senses (reverse [rev], dextral [dex], normal [nor], and sinistral [sin]), each of which may have two possible secondary slip senses depending on the slip-lineation rake value, for a total of twelve possible slip-sense categories. In some cases, no secondary slip sense information may be given. Faults with lineation rake values greater than 45 degrees have either reverse or normal primary slip senses, whereas those with rake values lesser than 45 degrees have either sinistral or dextral strike-slip primary slip senses. Faults with lineation rake values greater than 75 degrees have pure normal or reverse slip senses, whereas those with rake values less than 15 degrees have pure dextral or sinistral slip senses. The twelve possible slip-sense numeric codes and their corresponding descriptors are as follows, with the first part of combined (i.e., hyphenated) slip-sense descriptors indicating the primary slip sense: 0_not applicable, 1_rev, 2_rev-dex, 3_dex-rev, 4_dex, 5_dex-nor, 6_nor-dex, 7_nor, 8_nor-sin, 9_sin-nor, 10_sin, 11_sin-rev, 12_rev-sin. The CERTCODE and SENCERT items are numerical codes and corresponding textual descriptors, respectively, that indicate the certainty of the slip-sense determination. There are three possible slip-sense certainties, as follows: 0-not applicable, 1-certain, 2-probable, 3-questionable. In the coverage's sbpnt.ref INFO file the SOURCE item lists the numeric code used to identify the data source. The scale item lists the scale of the source map. (This value is the denominator of the proportional fraction that identifies the scale of the map that was digitized or scanned to produce the digital map.) The AUTHORS item lists the author(s) or compiler(s) of source map entered as last name, first name or initial, and middle initial. The YEAR item lists the source (map) publication date. The REFERENCE item lists the remainder of the reference in USGS reference format. >SBPNT.PAT >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 AREA 8 18 F 5 > 9 PERIMETER 8 18 F 5 > 17 SBPNT# 4 5 B - > 21 SBPNT-ID 4 5 B - > 25 PTTYPE 100 100 C - > 125 SYMBOL 3 3 I - > 128 STRIKE 3 3 I - > 131 DIP 3 3 I - > 134 SOURCE 4 4 I - > 138 SENSCODE 4 4 I - > 142 SLIPSENS 80 80 C - > 222 CERTCODE 3 3 I - > 225 SENCERT 80 80 C - > > >SBPNT.REF: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 SOURCE 4 4 I - > 5 SCALE 8 8 I - > 13 AUTHORS 200 200 C - > 213 YEAR 4 4 I - > 217 REFERENCE 250 250 C - sbminpnt coverage: Contains points recording site-specific observations and measurements not displayed on the map, such as minor anticlines, minor fault attitudes, minor folds, minor synclines, and slip lineations on minor faults. In the sbminpnt.pat INFO file the PTTYPE item lists the type of point symbol, e.g., strike and of inclined bedding. The SYMBOL item lists the marker symbol used by ArcInfo to identify the type of structural map symbol(Symbol numbers refer to the geoscamp2.mrk markerset). The STRIKE item contains the strike of bedding as well as trend of fold axis, where applicable. Strike is an azimuthal angle. Measured in degrees from 0 to 360 in a clockwise direction from North, the STRIKE value also specifies the dip direction, where the dip direction is 90 degrees clockwise relative to the STRIKE. The DIP item contains the dip of bedding as well as plunge angles, where applicable. This value is an angle measured (in degrees 0 to 90) down from the horizontal; thus a horizontal dip is 0 degrees and a vertical dip is 90 degrees. The SOURCE item lists the numeric code used to identify the data source for the point feature. The SENSCODE and SLIPSENS items are numerical codes and corresponding textual descriptors, respectively, that describe the fault slip sense determined at the location along the fault trace where the associated slip lineation was measured. "Fault slip sense" refers to the sense or direction of movement of the block of rock on one side of a fault relative to the block on the other side of the fault. A fault may have one of four possible primary slip senses (reverse [rev], dextral [dex], normal [nor], and sinistral [sin]), each of which may have two possible secondary slip senses depending on the slip-lineation rake value, for a total of twelve possible slip-sense categories. In some cases, no secondary slip sense information may be given. Faults with lineation rake values greater than 45 degrees have either reverse or normal primary slip senses, whereas those with rake values lesser than 45 degrees have either sinistral or dextral strike- slip primary slip senses. Faults with lineation rake values greater than 75 degrees have pure normal or reverse slip senses, whereas those with rake values less than 15 degrees have pure dextral or sinistral slip senses. The twelve possible slip-sense numeric codes and their corresponding descriptors are as follows, with the first part of combined (i.e., hyphenated) slip-sense descriptors indicating the primary slip sense: 0_not applicable, 1_rev, 2_rev-dex, 3_dex-rev, 4_dex, 5_dex-nor, 6_nor-dex, 7_nor, 8_nor-sin, 9_sin-nor, 10_sin, 11_sin-rev, 12_rev-sin. The CERTCODE and SENCERT items are numerical codes and corresponding textual descriptors, respectively, that indicate the certainty of the slip-sense determination. There are three possible slip-sense certainties, as follows: 0-not applicable, 1-certain, 2-probable, 3-questionable. >SBMINPNT.PAT >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 AREA 8 18 F 5 > 9 PERIMETER 8 18 F 5 > 17 SBPNT# 4 5 B - > 21 SBPNT-ID 4 5 B - > 25 PTTYPE 100 100 C - > 125 SYMBOL 3 3 I - > 128 STRIKE 3 3 I - > 131 DIP 3 3 I - > 134 SOURCE 4 4 I - > 138 SENSCODE 4 4 I - > 142 SLIPSENS 80 80 C - > 222 CERTCODE 3 3 I - > 225 SENCERT 80 80 C - > > >SBMINPNT.REF: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 SOURCE 4 4 I - > 5 SCALE 8 8 I - > 13 AUTHORS 200 200 C - > 213 YEAR 4 4 I - > 217 REFERENCE 250 250 C - sbhlsd grid: Contains hillshade values derived from USGS National Elevation Dataset (NED) 10 meter resolution elevation data for the Santa Barbara Coastal Plain, California, 1:24,000 area. The grid's projection is the same polyconic projection used for the geologic database coverages. The illumination angle for the hillshade's shaded relief grid was generated at an azimuth of 315 degrees and horizon angle of 45 degrees In the integer grid's sbhlsd.vat INFO file, the VALUE item lists integer values that describe the illumination level of a cell or group of cells forming a zone. The COUNT item lists the number of cells in a zone. In the grid's sbhlsd.sta INFO file, the MIN item contains the minimum value, the MAX item contains the maximum value, the MEAN item contains the average value, and the STDV item contains the standard deviation. >SBHLSD.VAT > >COLUMN ITEM NAMEWIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 VALUE 4 10 B - > 5 COUNT 4 10 B - >SBHLSD.STA > >COLUMN ITEM NAMEWIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 MIN 8 15 F 3 > 9 MAX 8 15 F 3 > 17 MEAN 8 15 F 3 > 25 STDV 8 15 F 3 Coding of LABEL, and DESC attributes in the sbgeos coverage: >LABEL | DESC >QTst | Siltstone unit (lower Pleistocene and upper Pliocene?) >QTst? | Siltstone unit, uncertain (lower Pleistocene and upper Pliocene?) >Qa | Active channel alluvium (Holocene) >Qac | Alluvium and colluvium (Holocene and upper Pleistocene) >Qas | Asphalt deposits (Holocene) >Qb | Beach deposits (Holocene) >Qbx | Shale-clast sedimentary breccia (middle Pleistocene) >Qc | Colluvium (Holocene and upper Pleistocene) >Qca | Casitas Formation (upper and middle Pleistocene) >Qca? | Casitas Formation, uncertain (upper and middle Pleistocene) >Qcg | Conglomeratic unit (middle and lower Pleistocene) >Qdf | Debris flow deposits (Holocene and upper Pleistocene?) >Qds | Dune sand (Holocene) >Qe | Estuarine deposits (Holocene) >Qia | Intermediate alluvial deposits (upper Pleistocene) >Qia? | Intermediate alluvial deposits, uncertain (upper Pleistocene) >Qls | Landslide deposits (Holocene and Pleistocene) >Qls? | Landslide deposits, uncertain (Holocene and Pleistocene) >Qmt | Marine-terrace deposits (upper Pleistocene) >Qmt? | Marine-terrace deposits, uncertain (upper Pleistocene) >Qoa | Older alluvial deposits (upper and middle Pleistocene) >Qoa? | Older alluvial deposits, uncertain (upper and middle Pleistocene) >Qsb | Santa Barbara Formation (middle and lower Pleistocene) >Qsb? | Santa Barbara Formation, uncertain (middle and lower Pleistocene) >Qss | Sandstone unit (lower Pleistocene?) >Tcw | Coldwater Sandstone (upper? and middle Eocene) >Tml | Monterey Formation, lower calcareous unit (middle and lower Miocene) >Tml? | Monterey Formation, lower calcareous unit, uncertain (middle and lower Miocene) >Tmlb | Monterey Formation, breccia in lower calcareous unit (middle? and lower Miocene) >Tmm | Monterey Formation, middle shale unit (upper and middle Miocene) >Tmu | Monterey Formation, upper siliceous unit (upper Miocene) >Tmu? | Monterey Formation, upper siliceous unit, uncertain (upper Miocene) >Tr | Rincon Shale (lower Miocene) >Trs | Rincon Shale, siliceous shale interval (lower Miocene) >Tspl | Sespe Formation, lower conglomerate and sandstone unit (lower Oligocene? and upper Eocene) >Tspm | Sespe Formation, middle conglomerate and sandstone unit (Oligocene) >Tspu | Sespe Formation, upper sandstone and mudstone unit (upper Oligocene) >Tsq | Sisquoc Formation (lower Pliocene and upper Miocene) >Tu | Unnamed mudstone (upper Miocene) >Tv | Vaqueros Formation (upper Oligocene) >Unmapped | Unmapped area >af | Artificial fill (Holocene) >w | Open water >Coding of NAME attributes in the sbgeos coverage: >LINECODE | NAME > 85|Beveled surface border > 2|Contact - Approximately located > 1|Contact - Certain > 3|Contact - Concealed > 20|Contact - Inferred > 19|Contact - Inferred from 1928 air photos > 102|Fault - Approximately located > 101|Fault - Certain > 103|Fault - Concealed > 523|Fault - Concealed, from 1928 air photos > 106|Fault - Concealed, queried > 537|Fault - Inferred > 524|Fault - Inferred, from 1928 air photos > 107|Fault - Inferred, queried > 525|Fault-line scarp > 63|Keybed - Certain > 81|Map boundary > 86|Marine-terrace shoreline angle - Approximately located > 112|Normal fault - Approximately located > 111|Normal fault - Certain > 113|Normal fault - Concealed > 186|Normal fault - Concealed, queried > 536|Normal fault - Inferred > 117|Normal fault - Inferred, queried > 82|Periphery of mapped units > 162|Reverse fault - Approximately located > 161|Reverse fault - Certain > 163|Reverse fault - Concealed > 588|Reverse fault - Concealed, from 1928 air photos > 169|Reverse fault - Concealed, queried > 167|Reverse fault - Inferred > 589|Reverse fault - Inferred, from 1928 air photos > 168|Reverse fault - Inferred, queried > 41|Shoreline > 77|Slide block boundary - Inferred > 172|Thrust fault - Approximately located > 171|Thrust fault - Certain > 173|Thrust fault - Concealed > 174|Thrust fault - Concealed, queried > 177|Thrust fault - Inferred > 178|Thrust fault - Inferred, queried >Coding of NAME attributes in the sbfold coverage: >LINECODE | NAME > 402|Anticline - Approximately located > 401|Anticline - Certain > 403|Anticline - Concealed > 526|Anticline - Inferred > 531|Downwarp axis - Approximately located > 521|Downwarp axis - Certain > 522|Downwarp axis - Concealed > 530|Downwarp axis - Inferred > 439|Overturned anticline - Concealed > 440|Overturned syncline - Certain > 442|Overturned syncline - Concealed > 515|Overturned syncline - Inferred > 414|Syncline - Approximately located > 413|Syncline - Certain > 415|Syncline - Concealed > 527|Syncline - Inferred > 532|Upwarp axis - Approximately located > 519|Upwarp axis - Certain > 520|Upwarp axis - Concealed > 529|Upwarp axis - Inferred >Coding of PTTYPE in the sbpnt coverage: >Arrow showing direction of fold plunge >Contact attitude - Showing strike and dip >Fault attitude - Showing strike and dip >Horizontal bedding >Inclined bedding - Showing approximate strike and dip >Inclined bedding - Showing strike and dip >Inclined bedding - Strike and dip of beds calculated from bedding trace >Oil seep >Overturned bedding - Showing strike and dip >Qas - Asphalt deposits >Qtc - Travertine and caliche? deposits >Slip lineation on a fault - Showing bearing and rake >Vertical bedding - Showing strike >Coding of PTTYPE in the sbminpnt coverage: >Inclined joint – Showing strike and dip >Minor anticline - Showing bearing and plunge >Minor fault attitude - Showing strike and dip >Minor folds - Showing bearing and plunge >Minor syncline - Showing bearing and plunge >Slip lineation on a minor fault - Showing bearing and plunge Auxiliary files: geol_sfo.lin: This lineset file defines geologic line types in the geologically themed coverages. geoscamp2.mrk: This markerset file defines the geologic markers in the geologically themed coverages. wpgcmykg.shd: This shadeset file defines the cmyk values of colors assigned to polygons in the geologically themed coverages. 3001.pdf: A print optimized file for viewing and printing a graphics version of the map and accessory elements using Adobe Acrobat viewing software (version 9.0). (Adobe Acrobat 9.0 viewing software is free and can be downloaded at the following URL: http://www.adobe.com/products/acrobat/readstep2.html) Entity_and_Attribute_Detail_Citation: http://wrgis.wr.usgs.gov/open-file/of99-438/ Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: USGS Information Services Address: Box 25286 Address: Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225-0046 Contact_Voice_Telephone: 1-888-ASK-USGS Contact_Electronic_Mail_Address: none Resource_Description: Scientific Investigations Map 3001 Distribution_Liability: This database, identified as SIM_3001, has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty, expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. Although this information product, for the most part, is in the public domain, it also contains copyrighted material as noted in the text. 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Fees: For current prices of USGS information products, please see Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: USGS Information Services Address: Box 25286 Address: Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225-0046 Contact_Voice_Telephone: 303-236-5486 Contact_Electronic_Mail_Address: webmaster@geology.cr.usgs.gov Resource_Description: Scientific Investigations Map 3001 Distribution_Liability: This database, identified as SIM_3001, has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty, expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. Although this information product, for the most part, is in the public domain, it also contains copyrighted material as noted in the text. Permission to reproduce copyrighted items for other than personal use must be secured from the copyright owner. Any use of trade, product or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Geological Survey. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE,SHP Format_Version_Number: 9.2 Format_Version_Date: 2006 File_Decompression_Technique: GZIP TAR archive, In UNIX use the command "gunzip -c | tar xvf .tar" In Windows, use WinZip (http://www.winzip.com/) or other programs to extract the file. 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