Metadata: Identification_Information: Citation: Citation_Information: Originator: E.J. Helley Originator: R.W. Graymer Originator: G.A. Phelps Originator: P.K. Showalter Originator: C.M. Wentworth Publication_Date: 1994 Title: Preliminary quaternary geologic maps of Santa Clara Valley, Santa Clara, Alameda, and San Mateo counties, California: A digital database Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 94-231 Online_Linkage: http://pubs.usgs.gov/of/1994/of94-231/ Description: Abstract: This digital map database, which is compiled from previously unpublished and open-filed U.S. Geol. Survey reports (Wesling and Helley, 1989), represents the general distribution and identity of Quaternary deposits in eight 7.5 minute quadrangles in the southern San Francisco Bay region, California. Purpose: Together with the accompanying text file (scgeo.txt), this digital map database provides current information on the Quaternary geology of the area covered. The database delineates map units that are identified by general age and lithology following the compilation sources. One bedrock unit, the Santa Clara formation, is differentiated but the other bedrock units are combined and are not identified. More specific information about the units may be available in the original Open-file reports. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1994 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -122.25 East_Bounding_Coordinate: -121.75 North_Bounding_Coordinate: 37.5 South_Bounding_Coordinate: 37.125 Access_Constraints: None Use_Constraints: None Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Graymer, Russell W Contact_Organization: USGS-GEO-WRG-NGM Contact_Address: Address_Type: mailing and physical address Address: Mail Stop 975, USGS 345 Middlefield Road City: Menlo Park State_or_Province: CA Postal_Code: 94025 Country: US Contact_Voice_Telephone: 650-329-4988 Contact_Electronic_Mail_Address: rgraymer@usgs.gov Keywords: Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: geology Theme_Keyword: geologic maps Theme_Keyword: geologic history Theme_Keyword: surficial geologic units Theme_Keyword: Quaternary Theme_Keyword: geospatial datasets Theme: Theme_Keyword_Thesaurus: National Geologic Map Database Catalog themes, augmented Theme_Keyword: 3400 - Graphical Theme_Keyword: 3410 - PDF Theme_Keyword: 3100 - Vector Theme_Keyword: 3420 - PostScript Theme_Keyword: 3110 - ESRI Theme_Keyword: 3111 - coverage Theme_Keyword: 1100 - Geology Theme_Keyword: 1101 - General Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Categories Theme_Keyword: geoscientificInformation Place: Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4 Place_Keyword: f06001 = Alameda Place_Keyword: f06081 = San Mateo Place_Keyword: f06085 = Santa Clara Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/1994/of94-231/sccomap.pdf Browse_Graphic_File_Description: Plotfile of digital database in PDF format (3.4MB) Browse_Graphic_File_Type: PDF Data_Set_Credit: Compilation of the digital database depended on advice and assistance in the use of ALACARTE - ARC/INFO from T.T. Fitzgibbon and C.M. Wentworth. E.E. Brabb provided helpful information. Native_Data_Set_Environment: ARC/INFO version 6.1.1 Data_Quality_Information: Logical_Consistency_Report: This digital map database, which is compiled from previously unpublished and US Geological Survey Open-File reports (Wesling and Helley, 1989), represents the general distribution and identity of Quaternary deposits in eight 7.5 minute quadrangles in the southern San Francisco Bay region, California. Completeness_Report: Faults are distinguished in the database only where they are at or near unit boundaries and the database cannot be used to identify or delineate active faults in the region. Similarly, the database cannot be used to identify or delineate most landslides in the region, because only one large landslide, in San Jose East quadrangle, is shown. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Wesling, J.R. Originator: Helley, E.J. Publication_Date: 1989 Title: Quatervary Geologic Map of the San Jose West Quadrangle, Santa Clara County, California Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 91-0587-B Source_Scale_Denominator: 24000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1989 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Wesling and Helley (1989) Source_Contribution: Compilied information on the general distribution and identity of Quaternary deposits in eight 7.5 minute quadrangles in the southern San Francisco Bay region, California. Process_Step: Process_Description: The geologic map information was digitized from stable originals of the geologic maps at 1:24,000 scale. The author manuscripts (ink on mylar) were scanned using a Tektronix 4991 monochrome scanner with a resolution of 304.8 dots per inch. The scanned images were vectorized and transformed from scanner coordinates to projection coordinates with digital tics placed by hand at quadrangle corners. The scanned lines were edited interactively by hand using ALACARTE, color boundaries were tagged as a contact or fault as appropriate, and scanning artifacts visible at 1:24,000 were removed. Quadrangle boundaries are included in each coverage to retain the integrity of units in each quadrangle, except in cal_utm where a large area of undifferentiated bedrock was placed outside the map boundary to allow convenient placement of the map explanation. Base Map layers were prepared from scale-stable printing negatives of the U.S. Geological Survey Palo Alto (1982 edition) and San Jose (1978 edition) 1:100,000 topographic maps. Scanned and vectorized images were transformed from scanner coordinates to projection coordinates with digital tics placed by hand at map corners. The images were then trimmed interactively by hand using ALACARTE to conform to the area of the geologic coverages, and the Palo Alto and San Jose portions were combined. Process_Date: unknown Process_Step: Process_Description: Creation of original metadata record Process_Date: 20000905 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jennifer Lenz Contact_Organization: US Geological Survey Contact_Address: Address_Type: mailing Address: 12201 Surise Valley Drive, Mail Stop 918 City: Reston State_or_Province: VA Postal_Code: 20192 Country: USA Contact_Voice_Telephone: 703-648-6974 Contact_Facsimile_Telephone: 703-648-6560 Contact_Electronic_Mail_Address: pschweitzer@usgs.gov Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Small mismatches at the San Jose - Palo Alto boundary caused by slight differences in the original scans remain in the three base map coverages. Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Entity point SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Complete chain SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Trasverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 10 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -123 Latitude_of_Projection_Origin: 0.0 False_Easting: -500000 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: unknown Ordinate_Resolution: unknown Planar_Distance_Units: meters Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: XXX_UTM.PAT (XXX represents abbreviated quadrangle name) Entity_Type_Definition: Quaternary geologic map units Entity_Type_Definition_Source: OFR-94-0231 Attribute: Attribute_Label: PTYPE Attribute_Definition: Polygon type Attribute_Definition_Source: OFR-94-0231 Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: GP Enumerated_Domain_Value_Definition: Gravel Pits Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: PP Enumerated_Domain_Value_Definition: Percolation ponds Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Qhsc Enumerated_Domain_Value_Definition: Stream channel deposits (Holocene) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Qhl Enumerated_Domain_Value_Definition: Natural levee deposits (Holocene) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Qhfp2 Enumerated_Domain_Value_Definition: Second alluvial terrace deposits (Holocene) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Qhfp1 Enumerated_Domain_Value_Definition: First alluvial terrace deposits (Holocene) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Qhfp Enumerated_Domain_Value_Definition: Floodplain deposits (Holocene) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: hb Enumerated_Domain_Value_Definition: Floodbasin deposits (Holocene) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Qhbs Enumerated_Domain_Value_Definition: Salt-affected floodbasin deposits (Holocene) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Qhbm Enumerated_Domain_Value_Definition: Estuary deposits (bay mud) (Holocene) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Qhaf1 Enumerated_Domain_Value_Definition: Younger alluvial fan deposits (Holocene) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Qhaf Enumerated_Domain_Value_Definition: Alluvial fan deposits (Holocene) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Qls Enumerated_Domain_Value_Definition: Landslide deposits (Pleistocene and Holocene) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Qpaf1 Enumerated_Domain_Value_Definition: Younger alluvial fan deposits (Pleistocene) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Qpaf Enumerated_Domain_Value_Definition: Alluvial fan deposits (Pleistocene) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Qpoaf Enumerated_Domain_Value_Definition: Older alluvial fan deposits (Pleistocene) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: QTsc Enumerated_Domain_Value_Definition: Santa Clara Formation (Pliocene and Pleistocene) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: br Enumerated_Domain_Value_Definition: Undifferentiated bedrock (Pliocene and older) Detailed_Description: Entity_Type: Entity_Type_Label: XXX_UTM.AAT (XXX represents abbreviated quadrangle name) Entity_Type_Definition: Linear geologic features Entity_Type_Definition_Source: OFR-94-0231 Attribute: Attribute_Label: LTYPE Attribute_Definition: Line type Attribute_Definition_Source: OFR-94-0231 Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: contact, certain Enumerated_Domain_Value_Definition: Observed contact Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: contact, approx. located Enumerated_Domain_Value_Definition: Contact whose position is not precisely known Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: contact, concealed Enumerated_Domain_Value_Definition: Contact whose position is concealed and inferred Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: fault, certain Enumerated_Domain_Value_Definition: Observed fault Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: fault, approx. located Enumerated_Domain_Value_Definition: Fault whose position is not precisely known Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: fault, concealed Enumerated_Domain_Value_Definition: Concealed fault whose position is inferred Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: water boundary, certain Enumerated_Domain_Value_Definition: Boundary of a body of water Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: map boundary Enumerated_Domain_Value_Definition: Boundary of mapped area Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: ca. 1850 shoreline Enumerated_Domain_Value_Definition: Historical 1850 shoreline Detailed_Description: Entity_Type: Entity_Type_Label: XXX_UTM.PAT (XXX represents abbreviated quadrangle name) Entity_Type_Definition: Quaternary geologic map units at specific locations (same attributes as polygon coverage XXX_UTM.PAT) Entity_Type_Definition_Source: OFR-94-0231 Detailed_Description: Entity_Type: Entity_Type_Label: CORR_UTM.PAT Entity_Type_Definition: Correlation table for the units in these maps (same attributes as polygon coverage XXX_UTM.PAT) Entity_Type_Definition_Source: OFR-94-0231 Detailed_Description: Entity_Type: Entity_Type_Label: CORR_UTM.AAT Entity_Type_Definition: Linear features in correlation table for the units in these maps (same attributes as arc coverage XXX_UTM.AAT) Entity_Type_Definition_Source: OFR-94-0231 Detailed_Description: Entity_Type: Entity_Type_Label: CORR_UTM.PAT Entity_Type_Definition: Point features of correlation table for the units in these maps (same attributes as polygon coverage XXX_UTM.PAT) Entity_Type_Definition_Source: OFR-94-0231 Detailed_Description: Entity_Type: Entity_Type_Label: EXPLSC_UTM.PAT Entity_Type_Definition: Map explanation and key (same attributes as polygon coverage XXX_UTM.PAT) Entity_Type_Definition_Source: OFR-94-0231 Detailed_Description: Entity_Type: Entity_Type_Label: EXPLSC_UTM.AAT Entity_Type_Definition: Linear features on map explanation and key (same attributes as arc coverage XXX_UTM.AAT) Entity_Type_Definition_Source: OFR-94-0231 Detailed_Description: Entity_Type: Entity_Type_Label: EXPLSC_UTM.PAT Entity_Type_Definition: Point coverage of map explanation and key (same attributes as polygon coverage XXX_UTM.PAT) Entity_Type_Definition_Source: OFR-94-0231 Overview_Description: Entity_and_Attribute_Overview: >Quadrangle abbrev. Quadrangle full name > >cal Calaveras Reservoir quadrangle >cup Cupertino quadrangle >mil Milpitas quadrangle >mtv Mountain View quadrangle >pal Palo Alto quadrangle >sje San Jose East quadrangle >sjw San Jose West quadrangle >sth Santa Teresa Hills quadrangle Entity_and_Attribute_Detail_Citation: http://pubs.usgs.gov/of/1994/of94-231/scc_q1.ReadMe.txt Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS Information Services Contact_Address: Address_Type: mailing Address: Box 25286, Denver Federal Center City: Denver State_or_Province: Colorado Postal_Code: 80255-0046 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS Contact_Facsimile_Telephone: 1-303-202-4695 Contact_Electronic_Mail_Address: infoservices@usgs.gov Resource_Description: USGS Open-File Report 94-231 Distribution_Liability: This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. This database, identified as "Preliminary Quaternary geologic maps of Santa Clara Valley, Santa Clara, Alameda, and San Mateo Counties, California: A digital 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. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE Format_Version_Number: 6.x Format_Information_Content: >ARC/INFO coverage Description of coverage > >cal_utm Quaternary geology of Calaveras Reservoir quadrangle >cup_utm Cupertino quadrangle >mil_utm Milpitas quadrangle (Helley and Wesling, 1989) >mtv_utm Mountain View quadrangle >pal_utm Palo Alto quadrangle >sje_utm San Jose East quadrangle (Helley and Wesling, 1990) >sjw_utm San Jose West quadrangle (Wesling and Helley, 1989) >sth_utm Santa Teresa Hills quadrangle >explsc_utm >explsc_ano Together, these ARC coverages produce a plottable or displayable map explanation and key >corr_utm >corr_ano Together, these ARC coverages contain a correlation table for the units in these maps >scc_dr Drainage base map >scc_cu Cultural base map >scc_topo Topographic contours base map Transfer_Size: 8.3 File_Decompression_Technique: uncompress and tar Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/1994/of94-231/scc_q1.tar.Z Fees: none Metadata_Reference_Information: Metadata_Date: 20160205 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Peter N Schweitzer Contact_Organization: USGS Midwest Area Contact_Position: Collection manager, USGS Geoscience Data Clearinghouse, http://geo-nsdi.er.usgs.gov/ Contact_Address: Address_Type: mailing address Address: Mail Stop 954 12201 Sunrise Valley Dr City: Reston State_or_Province: VA Postal_Code: 20192-0002 Country: USA Contact_Voice_Telephone: 703-648-6533 Contact_Facsimile_Telephone: 703-648-6252 Contact_Electronic_Mail_Address: pschweitzer@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998