Faults--Offshore of Bolinas Map Area, California

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: S.Y. Johnson
Originator: H.G. Greene
Originator: M.W. Manson
Originator: S.R. Hartwell
Originator: C.A. Endris
Originator: J.T. Watt
Publication_Date: 2014
Title: Faults--Offshore of Bolinas Map Area, California
Geospatial_Data_Presentation_Form: vector digital data

Larger_Work_Citation:
Citation_Information:
Originator: Guy R. Cochrane
Originator: Peter Dartnell
Originator: Samuel Y. Johnson
Originator: H. Gary Greene
Originator: Mercedes D. Erdey
Originator: Nadine E. Golden
Originator: Stephen R. Hartwell
Originator: Michael W. Mansion
Originator: Ray W. Sliter
Originator: Charles A. Endris
Originator: Janet T. Watt
Originator: Stephanie L. Ross
Originator: Rikk G. Kvitek
Originator: Eleyne L. Phillips
Originator: Terry R. Bruns
Originator: John L. Chin
Publication_Date: 2015
Title:
California State Waters Map Series--Offshore of Bolinas Map Area, California
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: Open-File Report
Issue_Identification: OFR 2015-1135
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: <https://dx.doi.org/10.3133/ofr20151135>
Online_Linkage: <https://pubs.usgs.gov/of/2015/1135/>

Larger_Work_Citation:
Citation_Information:
Originator: Nadine E. Golden
Publication_Date: 2013
Title: California State Waters Map Series Data Catalog
Geospatial_Data_Presentation_Form: database
Series_Information:
Series_Name: Data Series
Issue_Identification: DS 781
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: <https://pubs.usgs.gov/ds/781/>
Online_Linkage:
https://www.sciencebase.gov/arcgis/rest/services/Catalog/5556cd65e4b0a92fa7e9cfbd/MapServer
Online_Linkage:
https://www.sciencebase.gov/arcgis/services/Catalog/5556cd65e4b0a92fa7e9cfbd/MapServer/WMSServer?request=GetCapabilities&service=WMS

Description:
Abstract:
This part of DS 781 presents data for faults for the geologic and geomorphic map of the Offshore of Bolinas map area, California. The vector data file is included in "Faults_OffshoreBolinas.zip," which is accessible from <https://pubs.usgs.gov/ds/781/OffshoreBolinas/data_catalog_OffshoreBolinas.html>.

The Offshore of Bolinas map area straddles the right-lateral transform boundary between the North American and Pacific plates and is cut by several active faults that cumulatively form a distributed shear zone, including the San Andreas Fault, the eastern strand of the San Gregorio Fault, the Golden Gate Fault, and the Potato Patch Fault (Bruns and others, 2002; Ryan and others, 2008). These faults are covered by sediment (mostly unit Qms) with no seafloor expression, and are mapped using seismic-reflection data (see field activities S-8-09-NC and L-1-06-SF). The San Andreas Fault is the primary plate-boundary structure and extends northwest through the southern part of the map area before passing onshore at Bolinas Lagoon. This section of the San Andreas Fault has an estimated slip rate of 17 to 24 mm/yr (U.S. Geological Survey, 2010), and the devastating Great 1906 California earthquake (M 7.8) is thought to have nucleated on the San Andreas a few kilometers south of this map area offshore of San Francisco (e.g., Bolt, 1968; Lomax, 2005). The San Andreas Fault forms the boundary between two distinct basement terranes, Upper Jurassic and Lower Cretaceous melange and graywacke sandstone of the Franciscan Complex to the east, and Late Cretaceous granitic and older metamorphic rocks of the Salinian block to the west. Franciscan Complex rocks (unit KJf, undivided) form seafloor outcrops adjacent to the shoreline southeast of Stinson Beach that are commonly continuous with onshore coastal outcrops.

Faults were primarily mapped by interpretation of seismic reflection profile data (see field activities S-8-09-NC and L-1-06-SF). The seismic reflection profiles were collected between 2006 and 2009.

References Cited

Bolt, B.A., 1968, The focus of the 1906 California earthquake: Bulletin of the Seismological Society of America, v. 58, p. 457-471.

Bruns, T.R., Cooper, A.K., Carlson, P.R., and McCulloch, D.S., 2002, Structure of the submerged San Andreas and San Gregorio fault zones in the Gulf of Farallones as inferred from high-resolution seismic-reflection data, in Parsons, T. (ed.), Crustal structure of the coastal and marine San Francisco Bay region, California: U.S. Geological Survey Professional Paper 1658, p. 77-117.

Lomax, A., 2005, A reanalysis of the hypocentral location and related observations for the Great 1906 California earthquake: Bulletin of the Seismological Society of America, v. 95, p. 861-877.

Ryan, H.F., Parsons, T., and Sliter, R.W., 2008. Vertical tectonic deformation associated with the San Andreas fault zone offshore of San Francisco, California. Tectonphysics, 429 (1-2), p. 209-224.

U.S. Geological Survey and California Geological Survey, 2010, Quaternary fault and fold database for the United States, accessed April 5, 2012, from USGS website: <http://earthquake.usgs.gov/hazards/qfaults/>.

Purpose:
To expand geologic mapping to the seafloor within the California's State Waters, to update coastal geologic mapping, and to contribute to a uniform regional geologic database, which can be used geographic information systems. Additionally, to provide a geologic map for the public and geoscience community to aid in assessments and mitigation of geologic hazards in the Bolinas coastal region and to provide sufficient geologic information for land-use and land-management decisions both onshore and offshore. This information is not intended for navigational purposes.
Supplemental_Information:
Map political location: Marin County, California Compilation scale: 1:24,000 Base maps used are hillshades generated from IfSAR, LiDAR, and multibeam mapping both onshore and offshore (see Bathymetry Hillshade--Offshore Bolinas, California, DS 781, for more information).
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 2006
Ending_Date: 2009
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: none planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -122.70
East_Bounding_Coordinate: -122.58
North_Bounding_Coordinate: 37.90
South_Bounding_Coordinate: 37.81
Keywords:
Theme:
Theme_Keyword_Thesaurus: Global Change Master Directory (GCMD)
Theme_Keyword: Oceans > Bathymetry/SeafloorTopography > Bathymetry
Theme_Keyword: Oceans > Bathymetry/SeafloorTopography > Seafloor Topography
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme_Keyword: environment
Theme_Keyword: oceans
Theme_Keyword: imageryBaseMapsEarthCover
Place:
Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: Pacific Ocean
Place_Keyword: State of California
Place_Keyword: Bolinas
Place_Keyword: Marin County
Place_Keyword: Stinson Beach
Place_Keyword: Bolinas Lagoon

Access_Constraints:
If physical samples or materials are available, constraints on their on-site access are described in "WR CMG Sample Distribution Policy" at URL: <http://walrus.wr.usgs.gov/infobank/programs/html/main/sample-dist-policy.html>
Use_Constraints:
This information is not intended for navigational purposes.
Read and fully comprehend the metadata prior to data use. Uses of these data should not violate the spatial resolution of the data. Where these data are used in combination with other data of different resolution, the resolution of the combined output will be limited by the lowest resolution of all the data.
Acknowledge the U.S. Geological Survey in products derived from these data. Share data products developed using these data with the U.S. Geological Survey.
This database 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 this Federal Geographic Data Committee-compliant metadata file is intended to document these data in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USGS Pacific Coastal and Marine Science Center
Contact_Person: Stephen Hartwell
Contact_Position: Geologist
Contact_Address:
Address_Type: physical address
Address: 400 Natural Bridges Drive
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Country: USA
Contact_Voice_Telephone: (831) 460-7814
Contact_Facsimile_Telephone: (831) 427-4748
Contact_Electronic_Mail_Address: shartwell@usgs.gov
Native_Data_Set_Environment:
Microsoft Windows Server 2008 R2 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.0.0.2414

Browse_Graphic:
Browse_Graphic_File_Name:
<https://pubs.usgs.gov/ds/781/OffshoreBolinas/images/Faults_OffshoreBolinas.jpg>
Browse_Graphic_File_Description: Faults offshore Bolinas.
Browse_Graphic_File_Type: JPEG


Data_Quality_Information:
Logical_Consistency_Report:
Map elements were visually checked for overshoots, undershoots, duplicate features, and other errors by the lead authors and by the GIS technician(s) who created the digital database. Review drafts of the map were reviewed internally by at least two other geologists for consistency with basic geologic principles and general conformity to USGS mapping standards.
Completeness_Report:
Data are complete: no offshore features that could be accurately identified and represented at the compilation scale of 1:24,000 were eliminated or generalized. The smallest area represented is approximately 100 square meters. All geospatial database elements are attributed.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Faults were primarily mapped by interpretation of seismic reflection profile data (see field activities S-8-09-NC and L-1-06-SF). Faults lines were digitized by heads-up screen digitization on to shot-point picks from seismic-line navigation data - each shot point has an associated lat/long in the survey data. Error is introduced from layback, as well as from interpretation of oblique features, so horizontal accuracy of fault and fold location is estimated to be on the order of 10 to 20 meters.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
U.S. Geological Survey (USGS) , Coastal and Marine Geology Program (CMGP)
Publication_Date: 2013
Title:
Chirp and High-Resolution Mini-Sparker Seismic data of field activity L-1-06-SF in Offshore Golden Gate, San Francisco County, CA from 09/25/2006 to 10/03/2006
Publication_Information:
Publication_Place: Menlo Park, CA
Publisher:
U.S. Geological Survey (USGS) , Coastal and Marine Geology (CMG)
Online_Linkage: <http://walrus.wr.usgs.gov/infobank/gos/l-1-06-sf.fmeta.xml>
Online_Linkage:
<http://walrus.wr.usgs.gov/infobank/l/l106sf/html/l-1-06-sf.meta.html>
Type_of_Source_Media: ASCII lat/long shot point files
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20060925
Ending_Date: 20061003
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: L-1-06-SF
Source_Contribution:
Digital seismic data used to interpret subsurface geologic structure
Process_Step:
Process_Description:
Faults were mapped onto shot lines based on the latitude and longitude of seismic picks from field activity L-1-06-SF.
Process_Date: 2011
Source_Information:
Source_Citation:
Citation_Information:
Originator:
U.S. Geological Survey (USGS) , Coastal and Marine Geology Program (CMGP)
Publication_Date: 2013
Title:
Subbottom survey data of field activity S-8-09-NC in Stinson Beach to Point Arena (CA) from 09/08/2009 to 09/30/2009
Publication_Information:
Publication_Place: Menlo Park, CA
Publisher:
U.S. Geological Survey (USGS) , Coastal and Marine Geology (CMG)
Online_Linkage: <http://walrus.wr.usgs.gov/infobank/gos/s-8-09-nc.fmeta.xml>
Online_Linkage:
<http://walrus.wr.usgs.gov/infobank/s/s809nc/html/s-8-09-nc.meta.html>
Type_of_Source_Media: ASCII lat/long shot point files
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20090908
Ending_Date: 20090930
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: S-8-09-NC
Source_Contribution:
Digital seismic data used to interpret subsurface geologic structure
Process_Step:
Process_Description:
Faults were mapped onto shot lines based on the latitude and longitude of seismic picks from field activity S-8-09-NC.
Process_Date: 2011
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 27
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: WGS 1984 UTM Zone 10N
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -123.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000.0
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.0001
Ordinate_Resolution: 0.0001
Planar_Distance_Units: Meter
Geodetic_Model:
Horizontal_Datum_Name: D WGS 1984
Ellipsoid_Name: WGS 1984
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257223563

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Faults
Entity_Type_Definition: lines representing mapped faults
Entity_Type_Definition_Source: This report
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: RuleID
Attribute_Definition: Representation rule identifier
Attribute_Definition_Source: This report
Attribute_Domain_Values:
Unrepresentable_Domain:
This field contains the representation rule in the ArcGIS file geodatabase that applied dashed or solid lines to faults. The line is dashed if faults are mapped in sediment and solid if they are mapped over rock or a visible scarp.
Attribute:
Attribute_Label: Shape_Leng
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 345 Middlefield Rd
City: Menlo Park
State_or_Province: CA
Postal_Code: 94025-3561
Country: USA
Contact_Voice_Telephone: (650) 329-4309

Distribution_Liability:

These databases, identified as bathymetry and shaded-relief maps of Offshore Bolinas map area, California have been approved for release and publication by the U.S. Geological Survey (USGS). Although these databases have been subjected to rigorous review and are 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 (USGS), 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 any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein.
Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.
These data are not intended for navigational use.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: SHP
Format_Version_Number: ArcMap (version 10.0, ESRI , 2011)
Format_Specification:
Point, line, and polygon features are in shapefile format and are projected in UTM Zone 10 coordinates, with datum WGS84.
Format_Information_Content:
The .zip file for a shapefile includes the .aux, .dbf, .shp, .shx, .sbx, and .sbn files, as well as the text (.txt) and XML (.shp.xml) versions of the metadata for the Faults data layer of Offshore Bolinas, California.
File_Decompression_Technique: WinZip
Transfer_Size: 0.1
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<https://pubs.usgs.gov/ds/781/OffshoreBolinas/data/Faults_OffshoreBolinas.zip>
Network_Resource_Name: <https://pubs.usgs.gov/ds/781/>
Access_Instructions: Data can be downloaded via the World Wide Web (WWW)
Fees: none
Technical_Prerequisites:
The downloadable data file has been compressed with the "zip" command and can be unzipped with Winzip (or other tool) on Windows systems. To utilize these data, the user must have software capable of uncompressing the WinZip file and importing and viewing an Esri ArcMap SHP. Users should download the ArcGIS Project File, OffshoreBolinasGIS.mxd.zip, a compressed (with the "zip" command) version of the ArcMap document (.mxd) that has all the data layers loaded in the table of contents for "Offshore Bolinas" and has all the data symbolized as on the OFR map sheets. Download and save this ArcGIS project file, including all data layers, to the directory the user has created for this GIS.

Metadata_Reference_Information:
Metadata_Date: 20140211
Metadata_Review_Date: 20140905
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey, Coastal and Marine Geology Program
Contact_Person: Stephen R. Hartwell
Contact_Address:
Address_Type: mailing and physical address
Address: 400 Natural Bridges Drive
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060-5792
Country: US
Contact_Voice_Telephone: 831-460-7814
Contact_Facsimile_Telephone: 831-427-4748
Contact_Electronic_Mail_Address: shartwell@usgs.gov
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Generated by mp version 2.9.16 on Tue Jul 28 16:54:36 2015