Identification_Information: Citation: Citation_Information: Originator: Scott A. Minor Originator: Karl S. Kellogg Originator: Richard G. Stanley Originator: Paul Stone Originator: Charles L. Powell, II Originator: Larry D. Gurrola Originator: Amy J. Selting Originator: Theodore R. Brandt Publication_Date: 2006 Title: Preliminary Geologic Map of the Santa Barbara Coastal Plain Area, Santa Barbara County, California Edition: 1.1 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: USGS Open File Report Issue_Identification: OFR-02-0136 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2002/ofr-02-0136/ Description: Abstract: This report presents a new geologic digital map of the Santa Barbara coastal plain area at a compilation scale of 1:24,000 (one inch on the map = 2,000 feet on the ground) and with a horizontal positional accuracy of at least 20 m. This preliminary map depicts the distribution of bedrock units and surficial deposits and associated deformation underlying and adjacent to the coastal plain within the contiguous Santa Barbara and Goleta 7.5' quadrangles. A planned second version will extend the mapping westward into the adjoining Dos Pueblos Canyon quadrangle and eastward into the Carpinteria quadrangle. The mapping presented here results from the collaborative efforts of geologists with the U.S. Geological Survey Southern California Areal Mapping Project (SCAMP) (Minor, Kellogg, Stanley, Stone, and Powell) and the tectonic geomorphology research group at the University of California at Santa Barbara (Gurrola and Selting). C.L. Powell, II, performed all new fossil identifications and interpretations reported herein. T.R. Brandt designed and edited the GIS database,performed GIS database integration and created the digital cartography for the map layout. The Santa Barbara coastal plain is located in the western Transverse Ranges physiographic province along a west-trending segment of the southern California coastline about 100 km (62 mi) northwest of Los Angeles. The coastal plain region, which extends from the Santa Ynez Mountains on the north to the Santa Barbara Channel on the south, is underlain by numerous active and potentially active folds and partly buried thrust faults of the Santa Barbara fold and fault belt. Strong earthquakes that occurred in the region in 1925 (6.8 magnitude) and 1978 (5.1 magnitude) are evidence that such structures pose a significant earthquake hazard to the approximately 200,000 people living within the major coastal population centers of Santa Barbara and Goleta. Also, young landslide deposits along the steep lower flank of the Santa Ynez Mountains indicate the potential for continued slope failures and mass movements that may threaten urbanized parts of the coastal plain. Deformed sedimentary rocks in the subsurface of the coastal plain and the adjacent Santa Barbara Channel contain deposits of oil and gas, some of which are currently being extracted. 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 prediction of these and other geologic hazards and resources in the coastal plain region. In the map area the oldest stratigraphic units consist of resistant Eocene to Oligocene marine and terrestrial sedimentary rocks that form a mostly southward-dipping and laterally continuous sequence along the south flank of the Santa Ynez Mountains. Less resistant, but more variably deformed, Miocene, Pliocene, and Pleistocene marine sedimentary rocks and deposits are exposed in the lower Santa Ynez foothills and in the coastal hills and sea cliffs farther south. Pleistocene and Holocene surficial alluvial, colluvial, estuarine, and marine-terrace deposits directly underlie much of the low-lying coastal plain area, and similar-aged alluvial and landslide deposits locally mantle the lower flanks of the Santa Ynez Mountains. Structurally, the Santa Barbara coastal plain area is dominated by the Santa Barbara fold and fault belt, an east-west-trending zone of Quaternary, partly active folds and blind and exposed reverse and thrust faults. The dominant trend of individual structures within the belt is west-northwest -- slightly oblique to the overall trend of the fold and fault belt. A conspicuous exception, however, is the More Ranch fault system, which strikes east-northeast across the fold and fault belt at a high angle to the dominant structural grain. Based on a limited number of observations made at rare fault-plane exposures, most of the map-scale faults in the coastal plain area are moderately to steeply dipping and have most recently experienced reverse or reverse-oblique slip. Multiple sets of slip lineations, including strike-slip and, rarely, normal-slip striae, are commonly preserved on the fault planes, however, indicating that many of the faults have a varied, complex movement history. Several folds within older alluvial deposits have strong geomorphic expression that is consistent with a youthful age of deformation; commonly anticlines are coincident with elongate ridges or hills whereas synclines coincide with valleys or swales. The most dramatic example of such a geomorphic-structural correlation is Mission Ridge just north of downtown Santa Barbara, which is coincident with an anticline that is paired on its north side with a syncline that roughly follows a linear valley. On the basis of several lines of geomorphic evidence previous investigators have inferred that the Mission Ridge upwarp is a fault-related fold that has propagated westward, reflecting westward propagation of the Mission Ridge fault and resulting in progressive westward deflection of Mission Creek. Several folds in the map area, including the Mission Ridge anticlinal upwarp and folds just west of the Santa Barbara Harbor, are inferred to be underlain by blind reverse and thrust faults. Other fold axes on the coastal plain are parallel to adjacent fault traces, and in such cases the fold on the apparent upthrown, hanging-wall side of the fault is typically an asymmetric anticline whose steeper limb faces the fault. Nearly all asymmetric anticlines in the map area have northward vergence, suggesting that most associated blind reverse-thrust faults are dominantly southward dipping similar to the exposed faults and, thus, have accommodated northward tectonic transport of their hanging-wall blocks. Such structural geometry is consistent with fault-propagation folding and, together with evidence of dominant reverse fault slip, implies that faults in the map area have accommodated significant contractional strain during the Pleistocene. Most of the structures in the fold and fault belt deform deposits as young as middle to late Pleistocene, but many of the west-northwest-striking faults in the northwest part of the map area do not cut the oldest alluvial deposits or they offset such deposits a significantly lesser amount than the underlying bedrock units. These relations, and a moderate angular discordance that locally exists between the middle Pleistocene Santa Barbara Formation and overlying older alluvial deposits, indicate that pre-alluvial, possibly middle Pleistocene, deformation occurred locally along structures that were partly reactivated later in the Pleistocene. An erosional angular unconformity that separates the Sisquoc Formation and older units from the Santa Barbara Formation and partly coeval deposits suggests that significant uplift and deformation occurred in the coastal area in the Pliocene. One or more of these earlier deformational episodes may have been coeval with the formation of numerous northwest-trending folds and faults in the Monterey Formation along the sea cliffs between Santa Barbara Point and Arroyo Burro; these structures clearly predate unconformably overlying, cliff-capping marine terrace deposits. Possible age-equivalent folds also deform the Monterey in Sycamore Canyon area in the east part of the map area. The late Pleistocene marine terrace deposits, although uplifted and locally warped or gently folded, are clearly not as strongly deformed as the older Pleistocene deposits and underlying bedrock, and no significant deformation has been recognized in the mapped Holocene deposits despite the historic earthquake activity in the region. Collectively, these various structural age relations imply that deformation in the coastal plain area was most pronounced during the Pliocene and (or) Pleistocene prior to formation of the marine terraces in the late Pleistocene. 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 Goleta, Calif. and Santa Barbara, Calif. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2002 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: Irregular. Mapping is continuing in adjacent quadrangles and a more complete final map of this area at an identical scale may eventually be produced. Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -119.875 East_Bounding_Coordinate: -119.625 North_Bounding_Coordinate: 34.5 South_Bounding_Coordinate: 34.375 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: none Place_Keyword: USA Place_Keyword: California Place_Keyword: Santa Barbara County Place_Keyword: Santa Barbara coastal plain Temporal: Temporal_Keyword_Thesaurus: none Temporal_Keyword: Cenozoic Temporal_Keyword: Tertiary Temporal_Keyword: Quaternary Access_Constraints: none Use_Constraints: none. Acknowledgment of the U.S. Geological Survey would be appreciated in products derived from these data. 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 913 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: Browse_Graphic_File_Description: graphic representation of map layout Browse_Graphic_File_Type: PDF Data_Set_Credit: Tim Tierney and the UCSB Mapping and Imagery Library provided excellent computer and software support during our field stints. Dr. Ed Keller of the UCSB Institute for Crustal Studies was instrumental in developing scientific collaboration with his tectonic geomorphology research group, and has been an enthusiastic supporter of our work throughout the mapping campaign. The constructive review by Bob Bohannon of the USGS improved the quality of the map and text. We also thank the late Helmet Ehrenspeck of the Dibblee Foundation for his gracious endorsement of our new mapping and his selfless devotion to the promotion and dissemination of Tom Dibblee's great works. He will be sorely missed not only by us but also by the entire earth science community. Finally, Tom Dibblee is due special acknowledgment for his numerous pioneering and far-reaching contributions to our understanding of the geology of the Santa Barbara region and of southern California in general. Specifically, his earlier geologic mapping in the Santa Barbara coastal plain region formed an invaluable foundation for our current mapping efforts. 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: 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.geol.ucsb.edu/~keller/sbeqh.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: 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 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 ARC/INFO 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 ARC/INFO as coverages. Process_Date: 2001 Process_Step: Process_Description: Geologic polygon, line, and point features were attributed in ARC/INFO. 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 Ver. 1.1. Process_Date: 2003 Process_Step: Process_Description: Metadata created by Ted Brandt for 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 2003. Process_Date: 2006 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 is supplied in ARC/INFO export format. DATABASE STRUCTURE - ARC/INFO ==================================== 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. Arc/Info 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 UNIT item indicates the numeric code used to identify the rock unit, which is described in the sbgeos.ru look-up table. 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. 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. 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. Complete references for the sources are listed in the sbgeos.ref file. Related look-up table files are sbgeos.con, sbgeos.str, sbgeos.ru, 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 Arc/Info 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 contact or boundary. The SYMBOL item lists the line symbol number used by Arc/Info 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. In the sbgeos.ru INFO file, the UNIT item refers to the numeric code used to identify the rock unit. The LABEL item refers to the rock unit label (abbreviation) used to label unit on map. 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 UNIT 4 4 I - > 29 SOURCE 4 4 I - > 33 LABEL 10 10 C - > 43 DESC 100 100 C - > 143 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.RU: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 UNIT 4 4 I - > 5 LABEL 10 10 C - > 15 DESC 250 250 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 contacts and boundaries which are described in the sbfold.con 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. 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 Arc/Info 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 contact or boundary. The SYMBOL item lists the line symbol number used by Arc/Info 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 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. 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 - > 142 SOURCE 4 4 I - > > >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. >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 SBMINPNT# 4 5 B - >21 SBMINPNT-ID 4 5 B - >25 PTTYPE 100 100 C - >125 SYMBOL 3 3 I - >128 STRIKE 3 3 I - >131 DIP 3 3 I - >142 SOURCE 4 4 I - > > >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 - 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. ofr-02-136_print.pdf: A print optimized file for viewing and printing a graphics version of the map and accessory elements using Adobe Acrobat viewing software (version 5.0). (Adobe Acrobat 5.0 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: Coding of UNIT, LABEL, and DESC attributes in the sbgeos coverage: >UNIT | LABEL | DESC >0 | Unmapped | Unmapped area >1 | af | Artificial fill (Holocene) >2 | Qa | Active channel alluvium (Holocene) >3 | Qb | Beach deposits (Holocene) >4 | Qe | Estuarine deposits (Holocene) >5 | Qas | Asphalt deposits (Holocene) >6 | Qac | Alluvium and colluvium (Holocene and upper Pleistocene) >7 | Qc | Colluvium (Holocene and upper Pleistocene) >9 | Qls | Landslide deposits (Holocene and Pleistocene) >10 | Qdf | Debris flow deposits (Holocene and/or upper Pleistocene) >11 | Qtc | Travertine and/or caliche deposits (Holocene? and Pleistocene?) >12 | Qia | Intermediate alluvial deposits (upper Pleistocene) >13 | Qmt | Marine terrace deposits (upper Pleistocene) >14 | Qoa | Older alluvial deposits (upper and middle Pleistocene) >14 | Qbx | Shale-clast sedimentary breccia (middle Pleistocene) >15 | Qsb | Santa Barbara Formation (middle Pleistocene) >16 | Qsb? | Santa Barbara Formation, uncertain (middle Pleistocene) >17 | Qcg | Conglomeratic unit (middle Pleistocene?) >18 | Qss | Sandstone unit (middle Pleistocene?) >19 | QTst | Siltstone unit (lower Pleistocene and/or upper Pliocene) >20 | Tsq | Sisquoc Formation (Pliocene and upper Miocene) >22 | Tm | Monterey Formation (Miocene) >23 | Tmu | Monterey Formation, upper siliceous unit (upper Miocene) >23 | Tmu? | Monterey Formation, upper siliceous unit (upper Miocene) >24 | Tmm | Monterey Formation, middle shale unit (upper and middle Miocene) >25 | Tml | Monterey Formation, lower calcareous unit (middle and lower Miocene) >26 | Tr | Rincon Shale (lower Miocene) >27 | Trs | Rincon Shale, siliceous shale interval (lower Miocene) >28 | Tv | Vaqueros Formation (upper Oligocene) >29 | Tspm | Sespe Formation, middle conglomerate and sandstone unit (upper Oligocene) >29 | Tspu | Sespe Formation, upper sandstone and mudstone unit (upper Oligocene) >30 | Tspl | Sespe Formation, lower conglomerate and sandstone unit (upper Eocene) >32 | Tcw | Coldwater Sandstone (upper and/or middle Eocene) >33 | Open water | Open water >34 | Qoa? | Older alluvial deposits, uncertain (upper and middle Pleistocene) >36 | Qmt? | Marine terrace deposits, uncertain (upper Pleistocene) >37 | QTst? | Siltstone unit, uncertain (lower Pleistocene and/or upper Pliocene) >Coding of NAME attributes in the sbgeos coverage: >LINECODE | LABEL > 402|Anticline - Approximately located > 401|Anticline - Certain > 403|Anticline - Concealed > 526|Anticline - Inferred > 85|Beveled surface border > 2|Contact - Approximately located > 1|Contact - Certain > 3|Contact - Concealed > 20|Contact - Inferred > 19|Contact - Inferred from 1928 air photos > 531|Downwarp axis - Approximately located > 521|Downwarp axis - Certain > 522|Downwarp axis - Concealed > 530|Downwarp axis - Inferred > 102|Fault - Approximately located > 101|Fault - Certain > 103|Fault - Concealed > 523|Fault - Concealed, from 1928 air photos > 106|Fault - Concealed, queried > 107|Fault - Inferred > 524|Fault - Inferred, from 1928 air photos > 525|Fault-line scarp > 81|Map boundary > 86|Marine terrace shore line angle > 84|Marine terrace shore line angle - Approximately located > 82|Periphery of mapped units > 414|Syncline - Approximately located > 413|Syncline - Certain > 415|Syncline - Concealed > 527|Syncline - Inferred > 172|Thrust fault - Approximately located > 171|Thrust fault - Certain > 173|Thrust fault - Concealed > 177|Thrust fault - Inferred > 532|Upwarp axis - Approximately located > 519|Upwarp axis - Certain > 520|Upwarp axis - Concealed > 529|Upwarp axis - Inferred > 41|Water body >Coding of PTTYPE in the sbpnt coverage: >Arrow showing direction of fold plunge >Fault attitude - Showing strike and dip >Horizontal bedding >Inclined bedding - Showing approximate strike and direction of dip >Inclined bedding - Showing strike and dip >Inclined joint - Showing strike and dip >Overturned bedding - Showing strike and dip >Qas - Asphalt deposits >Slip lineation on a fault - Showing bearing and plunge >Vertical bedding - Showing strike >Coding of PTTYPE in the sbminpnt coverage: >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 Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: Central Publications Group Address: MS 902, Box 25046 DFC City: Lakewood State_or_Province: CO Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: 303-236-5486 Distribution_Liability: Although these digital spatial data have been subjected to rigorous review and are substantially complete, they are released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from their authorized or unauthorized use. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE, SHP Format_Version_Number: created with ArcInfo v. 9.1 File_Decompression_Technique: .tar.gz - UNIX gzip-compressed TAR file (ARCE files) - use GNU zip and TAR .EXE - self-extracting Windows ZIP archive (SHP files) - execute the file to extract Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: Fees: none 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: PO Box 25286 Address: Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: (888) ASK-USGS Resource_Description: OFR-02-0136 Distribution_Liability: none Standard_Order_Process: Non-digital_Form: Available as one printed sheet plus one pamphlet. Order from USGS at the address listed above or see http://rmmcweb.cr.usgs.gov/pub/mod/order.html for more ordering information. Fees: for current charges please see http://rmmcweb.cr.usgs.gov/public/mod/order.html Metadata_Reference_Information: Metadata_Date: 20060727 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Minor, Scott Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing and physical address Address: Mail Stop 980, USGS Box 25046, Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: US Contact_Voice_Telephone: 303-236-0303 Contact_Electronic_Mail_Address: sminor@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998