Identification_Information: Citation: Citation_Information: Originator: Scott A. Minor Publication_Date: 2004 Title: Geologic map of the Reyes Peak Quadrangle, Ventura County, California Edition: Version 1.0 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: USGS Open-File Report Issue_Identification: OF-2004-1420 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2004/1420/ Description: Abstract: New 1:24,000-scale geologic mapping in the Cuyama 30' x 60' quadrangle, in support of the USGS Southern California Areal Mapping Project (SCAMP), is contributing to a more complete understanding of the stratigraphy, structure, and tectonic evolution of the complex junction area between the NW-trending Coast Ranges and EW-trending western Transverse Ranges. The 1:24,000-scale geologic map of the Reyes Peak quadrangle, located in the eastern part of the Cuyama map area, is the final of six contiguous 7 ½' quadrangle geologic maps compiled for a more detailed portrayal and reevaluation of geologic structures and rock units shown on previous maps of the region (Carman, 1964; Dibblee, 1972; Vedder and others, 1973). SCAMP digital geologic maps of the five other contiguous quadrangles have recently been published (Minor, 1999; Kellogg, 1999, 2003; Stone and Cossette, 2000; Kellogg and Miggins, 2002). This digital compilation presents a new geologic map database for the Reyes Peak 7½' quadrangle, which is located in southern California about 75 km northwest of Los Angeles. The map database is at 1:24,000-scale resolution. Purpose: To update and reinterpret earlier geologic mapping, and to achieve a uniform regional geologic database. Supplemental_Information: files included in this dataset: REYESPKPOLY - geologic units and contacts REYESPKLIN - geologic line features (faults, folds) REYESPKPNT - point features (strike and dip, plunge) REYESPK_BASE.TIF/TFW - georegistered basemap image Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2004 Currentness_Reference: date of publication Status: Progress: Complete Maintenance_and_Update_Frequency: None planned. Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -119.375 East_Bounding_Coordinate: -119.250 North_Bounding_Coordinate: 34.750 South_Bounding_Coordinate: 34.625 Keywords: Theme: Theme_Keyword_Thesaurus: AGI Glossary of Geology Theme_Keyword: Geologic map Theme_Keyword: Eocene-Miocene marine sedimentary rocks Theme_Keyword: Miocene-Pleistocene terrigenous sedimentary rocks Theme_Keyword: Quaternary surficial deposits Theme_Keyword: transpressional faults and folds Theme_Keyword: Big Pine fault Theme_Keyword: Pine Mountain fault Theme_Keyword: Ozena fault Place: Place_Keyword_Thesaurus: U.S. Board on Geographic Names Place_Keyword: USA Place_Keyword: California Place_Keyword: Ventura County 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 Minor Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: USGS, Denver Federal Center, MS-980, Box 25046 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-0303 Contact_Electronic_Mail_Address: sminor@usgs.gov Data_Set_Credit: Desiree Valdivia and Paco VanSistine are acknowledged for their invaluable assistance in preparing the digital cartographic, database, and graphics files associated with this map. Excellent technical and digital reviews by Paul Stone and Jeremy Workman, respectively, are greatly appreciated. Fruitful discussions in and out of the field with U.S. Geological Survey colleagues Karl Kellogg, Rick Stanley, and Paul Stone and with Nate Onderdonk (U.C. Santa Barbara) improved the map and geologic interpretations. Native_Data_Set_Environment: SunOS, 5.8, sun4u UNIX ARC/INFO version 8.1 Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/2004/1420/OF2004_1420_508.PDF Browse_Graphic_File_Type: PDF Browse_Graphic_File_Description: graphical represention of map layout. Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Data were checked by the geologist who made the observations. 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 compilation were corrected as needed. Logical_Consistency_Report: Map elements were visually checked by the author for overshoots, undershoots, duplicate features, polygon attributes, and other errors. Automated (ARC/INFO) 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. The map was reviewed by other geologists for consistency with basic geologic principles and general conformity to USGS mapping standards. Completeness_Report: Data are complete: no features were eliminated or generalized at the scale of map compilation. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Lines were primarily mapped by photointerpretation of 1:24,000-scale color aerial photographs. Lines were digitized from the annotated aerial photographs by inspection using rectified and georeferenced digital orthophoto quarter quadrangles (DOQQ's) with ground resolution of 1 meter. Most digitized positions on the map are estimated to have about 20 m horizontal accuracy. Positions of point observations (i.e., bedding and fault attitudes, etc.) were determined using a hand-held Garmin 12 GPS receiver with an average horizontal accuracy of about 10 meters. There is no elevation data in the database. Lineage: Process_Step: Process_Description: Polygons, lines, and points representing geologic features and data points were digitized from scale-stable compilation materials using GSMCAD and ArcInfo. Process_Date: 2003 Process_Step: Process_Description: Features were attributed and checked against original compilation material. Process_Date: 2003 Process_Step: Process_Description: Draft check plots of map elements, along with text, correlation diagram, and descriptions of symbols were reviewed by peers for technical accuracy and USGS mapping standards. Revisions were made to the database to reflect necessary revisions. Process_Date: 2004 Process_Step: Process_Description: First draft of metadata created by dvansist using FGDCMETA.AML ver. 1.32 01/11/99 on ARC/INFO data set Process_Date: 2004 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Lambert Conformal Conic Lambert_Conformal_Conic: Standard_Parallel: 35.46666666667 Standard_Parallel: 34.03333333333 Longitude_of_Central_Meridian: -118.0 Latitude_of_Projection_Origin: 0 False_Easting: 0 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 1.401375055313 Ordinate_Resolution: 1.401375055313 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: > >REYESPKPOLY.PAT: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 AREA 4 12 F 3 > 5 PERIMETER 4 12 F 3 > 9 REYESPKPOLY# 4 5 B - > 13 REYESPKPOLY-ID 4 5 B - > 17 UNIT 6 6 C - > 23 SYMBOL 4 4 I - > 27 DESCRIPTION 100 100 C - > UNIT - geologic unit label SYMBOL - unique number given to map unit representing color value DESCRIPTION - brief geologic explanation of map unit UNIT SYMBOL DESCRIPTION QTm 106 Morales Formation (Pleistocene and Pliocene) Qa 7 Very young alluvium (Holocene) Qaa 4 Active alluvium (Holocene) Qac 11 Very young alluvium and colluvium (Holocene) Qls 32 Landslide deposits (Holocene) Qoa 29 Old alluvium (Pleistocene) Qoac 29 Old alluvium and colluvium (Pleistocene) Qols 31 Old landslide deposit (Pleistocene?) Qya 14 Young alluvium (Holocene and Pleistocene?) Qyac 10 Young alluvium and colluvium (Holocene and Pleistocene?) Tc? 183 Caliente Formation, uncertain (Miocene) Tca 156 Caliente Formation, arkosic-lithic sandstone facies (Miocene) Tcc 147 Caliente Formation, conglomerate facies (Miocene) Tcd 467 Cozy Dell Shale (Eocene) Tcds 493 Cozy Dell Shale, sandstone (Eocene) Tcgr 150 Caliente Formation, granitic breccia facies (Miocene) Tcw? 287 Coldwater Sandstone, uncertain (Eocene) Tjm 425 Juncal Formation, interbedded sandstone, siltstone, and shale facies (Eocene) Tjs 383 Juncal Formation, sandstone facies (Eocene) Tjsh 426 Juncal Formation, siltstone and shale facies (Eocene) Tlc 142 Lockwood Clay (Pliocene?) Tm 314 Monterey Formation (Miocene) Tma 391 Matilija Sandstone (Eocene) Tmam 390 Matilija Sandstone, interbedded sandstone and shale facies (Eocene) Tms 313 Monterey Formation, sandstone (Miocene) Tqc 45 Quatal Formation, conglomerate facies (Pliocene) Tqcl 49 Quatal Formation, clay-rich facies (Pliocene) Tqg 113 Quatal Formation, gypsum (Pliocene) Tqgr 75 Quatal Formation, granitic breccia facies (Pliocene) Tqs 46 Quatal Formation, sandstone facies (Pliocene) Tqw 98 Quatal Formation, white sandstone facies (Pliocene) Tqx 134 Quatal Formation, sedimentary breccia facies (Pliocene) Trd 153 Rhyolitic intrusions (Oligocene) Ts 171 Sespe Formation (Eocene) Tsmg 245 Santa Margarita Formation, gypsum (Miocene) Tsms 292 Santa Margarita Formation, sandstone and mudstone (Miocene) af 517 Artificial fill (Holocene) > >REYESPKPOLY.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 4 12 F 3 > 21 REYESPKPOLY# 4 5 B - > 25 REYESPKPOLY-ID 4 5 B - > 29 DESCRIPTION 80 80 C - > DESCRIPTION - explanation of line feature, using digital cartographic standard DESCRIPTION Contact-Approximately located Contact-Certain Contact-Inferred Fault-Approximately located Fault-Certain Fault-Inferred Landslide headwall scarp Map Boundary Reverse fault-Approximately located Reverse fault-Certain Thrust fault-Approximately located Thrust fault-Certain > >REYESPKLIN.AAT: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME INDEXED? > 1 FNODE# 4 5 B - - > 5 TNODE# 4 5 B - - > 9 LPOLY# 4 5 B - - > 13 RPOLY# 4 5 B - - > 17 LENGTH 4 12 F 3 - > 21 REYESPKLIN# 4 5 B - - > 25 REYESPKLIN-ID 4 5 B - - > 29 DESCRIPTION 80 80 C - - > DESCRIPTION - description of line features, using digital cartographic standards DESCRIPTION Anticline-Approximately located Anticline-Certain Anticline-Concealed Fault-Concealed Fluvial terrace scarp Landslide headwall scarp Man-made levee Overturned anticline-Approximately located Overturned anticline-Certain Overturned anticline-Concealed Overturned syncline-Approximately located Overturned syncline-Concealed Reverse fault-Concealed Syncline-Approximately located Syncline-Certain Syncline-Concealed Thrust fault-Concealed Trace of marker beds > >REYESPKPNT.PAT > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME INDEXED? > 1 AREA 4 12 F 3 - > 5 PERIMETER 4 12 F 3 - > 9 REYESPKPNT# 4 5 B - - > 13 REYESPKPNT-ID 4 5 B - - > 17 DESCRIPTION 80 80 C - - > 97 STRIKE 7 7 I - - > 104 DIP 5 5 I - - > 109 TREND 7 7 I - - > 116 RAKE 5 5 I - - > DESCRIPTION - description of point feature, using digital cartographic standards STRIKE - range of values: 0 - 359 degrees DIP - range of values: 0 - 90 degrees TREND - range of values: 0 - 359 degrees RAKE - range of values: 0 - 90 degrees DESCRIPTION Fault dip Horizontal bedding Inclined bedding-Showing approximate strike and dip Inclined bedding-Showing strike Inclined bedding-Showing strike and dip Inclined bedding-Showing strike and dip, measured indirectly using trace of beds Mesofault-showing strike and dip Minor folds-Showing axis trend and plunge Overturned bedding-Showing strike and dip Slickenline on mapped fault surface-Showing trend and rake Slickenline on mesofault surface-Showing trend and rake Entity_and_Attribute_Detail_Citation: none Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: MS-902, Box 25046 DFC City: Denver State_or_Province: Colorado Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: 303-236-5486 Contact_Electronic_Mail_Address: webmaster@greenwood.cr.usgs.gov Distribution_Liability: Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE, SHP File_Decompression_Technique: GZIP compressed TAR file (Unix), ZIP archive (Windows) Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2004/1420/ Fees: none Metadata_Reference_Information: Metadata_Date: 2004 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Paco VanSistine Contact_Address: Address_Type: mailing address Address: MS-980, Box 25046, Denver Federal Center City: Denver State_or_Province: Colorado Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: 303-236-5452 Contact_Electronic_Mail_Address: dsistine@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata ("CSDGM version 2") Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: none Metadata_Use_Constraints: none