Metadata: Identification_Information: Citation: Citation_Information: Originator: McLaughlin, R.J. Originator: Sarna-Wojcicki, A.M. Originator: Fleck, R.J. Originator: Wright, W.H. Originator: Levin, V.R.G. Originator: Valin, Z.C. Originator: Nicholson, R.S. Originator: Stamski, R.E. Publication_Date: 2004 Publication_Time: Title: Geology, Tephrochronology, Radiometric Ages, and Cross Sections of the Mark West Springs 7.5' Quadrangle, Sonoma and Napa Counties, California Edition: 1.0 Geospatial_Data_Presentation_Form: geologic map Series_Name: U.S. Geological Survey Scientific Investigations Map Issue_Identification: 2858 Publication_Information: Publication_Place: Menlo Park, CA Publisher: U.S. Geological Survey Other_Citation_Details: Online_Linkage: http://pubs.wr.usgs.gov/sim/2004/2858 Description: Abstract: This geologic map database and cross sections presents new geologic mapping by the authors in addition to new radiometric ages and tephrochronology of volcanic rock units. The map database depicts the general distribution of bedrock and surficial deposits in the mapped area and provides a context for interpreting the evolution of active faults in the region. Together with the accompanying PDF file (SIM2858-pamphlet.pdf), it provides current information on the geologic structure and stratigraphy of the area covered. The database delineates map units that are identified by general age and lithology following the stratigraphic nomenclature of the U.S. Geological Survey. The scale of the source maps limits the spatial resolution (scale) of the database to 1:24,000 or smaller. Purpose: This database and accompanying plot files depict the distribution of geologic materials and structures at 1:24,000 scale. The report is intended to provide geologic information for the regional study of materials properties, earthquake shaking, landslide hazards, mineral potential, seismic velocity, and earthquake faults. In addition, the report contains new information and interpretations about the regional geologic history and framework. However, the scale of this report does not provide sufficient detail for site development purposes. In addition, this map does not take the place of fault-rupture hazard zones designated by the California State Geologist. Similarly, although numerous landslides are mapped, the database does not identify or delineate all landslides in the map area or their present states of activity. Supplemental_Information: Procedures_Used: The databases in this report were compiled in ARC/INFO, a commercial Geographic Information System (Environmental Systems Research Institute, Redlands, California), with version 3.5 beta of the menu interface ALACARTE (Fitzgibbon and Wentworth, 1991, Fitzgibbon, 1991, Wentworth and Fitzgibbon, 1991). The files are in either GRID (ARC/INFO raster data) format or COVERAGE (ARC/INFO vector data) format. Coverages are stored in uncompressed ARC export format (ARC/INFO version 8.1.2). ARC/INFO export files (files with the .e00 extension) can be converted into ARC/INFO coverages in ARC/INFO (see below), and can be read by some other Geographic Information Systems, such as MapInfo via ArcLink and ESRI's ArcView. The digital compilation was done in version 8.1.2 of ARC/INFO with version 3.5 beta of the menu interface ALACARTE (Fitzgibbon and Wentworth, 1991, Fitzgibbon, 1991, Wentworth and Fitzgibbon, 1991). The geologic map information was digitized from stable originals of the geologic maps at 1:24,000 scale. The author manuscripts (pen on mylar) were scanned using an Altek monochrome scanner, and a WIDEimage COUGAR 36 IDEAL scanner, with a resolution of 800 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 appropriate, and some scanning artifacts visible at 1:24,000 were removed. Reviews_Applied_to_Data: This report has undergone two scientific peer reviews, one digital database review, and one review for conformity with geologic names policy. Related_Spatial_and_Tabular_Data_Sets: This report consists of a set of geologic map database files (Arc/Info coverages) and supporting text and plotfiles. The base map layer used in the preparation of the geologic map plotfile was downloaded from the web (http://bard.wr.usgs.gov/) as a Digital Raster Graphic file of a scale stable version of the USGS 1:24,000 topographic map and converted to a TIFF image which was then converted to a GRID. This grid contains no database information other than position, and is included for reference only. The base map used was the Mark West Springs (1993 edition) 1:24,000 topographic map, which has a 40-feet contour interval. Other_References_Cited: Other references cited are listed in the explanatory pamphlet Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2004 Currentness_Reference: The date given is the publication date. The information in the report is the most up-to-date available at the time of publication. Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: 532700.062 East_Bounding_Coordinate: 521762.312 North_Bounding_Coordinate: 4275023.500 South_Bounding_Coordinate: 4261116.000 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: geology Theme_Keyword: bedrock geology Theme_Keyword: surficial geology Theme_Keyword: geologic history Theme_Keyword: radiometric ages Theme_Keyword: tephrochronology Theme_Keyword: Franciscan complex Theme_Keyword: Coast Range ophiolite Theme_Keyword: Great Valley sequence Theme_Keyword: stratigraphic assemblages Theme_Keyword: geologic structures Theme_Keyword: Healdsburg fault zone Theme_Keyword: Maacama fault zone Theme_Keyword: Neogene slip rate Theme_Keyword: Windsor structural block Theme_Keyword: Mark West structural block Theme_Keyword: Franz Valley structural block Theme_Keyword: Knights Valley fault zone Theme_Keyword: Franz Valley fault zone Theme_Keyword: Bidwell Creek fault zone Theme_Keyword: Franz Valley anticline Theme_Keyword: Devils Kitchen fault zone Theme_Keyword: Mountain Home fault zone Theme_Keyword: Petrified Forest antiform Theme_Keyword: Petrified Forest fault zone Theme_Keyword: Gates Canyon thrust Theme_Keyword: Leslie Road fault Theme_Keyword: Mark West fault zone Theme_Keyword: Mark West antiform Theme_Keyword: Rincon Creek fault Theme_Keyword: Riebli Road syncline Theme_Keyword: Larkfield fault zone Theme_Keyword: San Andreas transform fault Theme_Keyword: Rodgers Creek fault system Theme_Keyword: Hayward-Calaveras fault system Theme_Keyword: Santa Rosa quadrangle Theme_Keyword: Roblar tuff Theme_Keyword: Sonoma Volcanics Theme_Keyword: Healdsburg-Maacama stepover fault system Theme_Keyword: Franciscan melange Theme_Keyword: Glen Ellen formation Theme_Keyword: Huichica formation Theme_Keyword: Tolay Volcanics Theme_Keyword: Franz Valley tephra Theme_Keyword: Bidwell Creek tephra Theme_Keyword: Pepperwood Ranch tephra Theme_Keyword: Jordan vineyards tephra Theme_Keyword: Devils Kitchen tephra Theme_Keyword: Camp Neuman tephra Theme_Keyword: Petrified Forest tuff Theme_Keyword: Putah tuff Theme_Keyword: Leslie Road tuff Theme_Keyword: Shilo Valley tuff Theme_Keyword: Lawlor tuff Theme_Keyword: Riebli Road tephra Theme_Keyword: Mark West tephra Place: Place_Keyword_Thesaurus: None Place_Keyword: United States of America Place_Keyword: California Place_Keyword: Sonoma County Place_Keyword: Napa County Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: Alluvial fan and fluvial terrace deposits Stratum_Keyword: Undivided Quaternary alluvial deposits Stratum_Keyword: Colluvium Stratum_Keyword: Alluvial fan and terrace deposits Stratum_Keyword: Landslide deposits Stratum_Keyword: Alluvial deposits Stratum_Keyword: Silica carbonate rock Stratum_Keyword: Fluvial and lacustrine deposits Stratum_Keyword: Fluvial and lacustrine deposits of Humbug Creek Stratum_Keyword: Lithic sandstone Stratum_Keyword: Wilson Grove Formation Stratum_Keyword: Petaluma Formation Stratum_Keyword: Sonoma Volcanics Stratum_Keyword: Dacitic flows of Sonoma Volcanics Stratum_Keyword: Rhyolitic and rhyodacitic flows and intrusive of Sonoma Volcanics Stratum_Keyword: Rhyolitic pumiceous ash-flow and minor air fall tuff of Sonoma Volcanics Stratum_Keyword: Rhyolitic to rhyodacitic vitrophyre of rhyolitic ash flow tuff of Sonoma Volcanics Stratum_Keyword: Rhyolitic to rhyodacitic welded tuff of rhyolitic ash flow tuff of Sonoma Volcanics Stratum_Keyword: Andesitic fine-grained waterlian tuff of Sonoma Volcanics Stratum_Keyword: Breccia of Sonoma Volcanics Stratum_Keyword: Andesite, basaltic andesite and basalt of Sonoma Volcanics Stratum_Keyword: Intrusive basaltic rocks of Sonoma Volcanics Stratum_Keyword: Great Valley Sequence Stratum_Keyword: Shale and sandstone of Great Valley Sequence Stratum_Keyword: Coast Range Ophiolite Stratum_Keyword: Serpentinized ultramafic rocks of Coast Range Ophiolite Stratum_Keyword: Central belt of Franciscan Complex Stratum_Keyword: Undifferentiated melange of Central belt of Franciscan Complex Stratum_Keyword: Undivided sandstone and shale of Central belt of Franciscan Complex Stratum_Keyword: Conglomerate of Central belt of Franciscan Complex Stratum_Keyword: Metasandstone of Central belt of Franciscan Complex Stratum_Keyword: Metachert of Central belt of Franciscan Complex Stratum_Keyword: Basaltic to felsic volcanic, intrusive, or plutonic rocks of Central belt of Franciscan Complex Stratum_Keyword: Gabbroic and diabase rocks of Central belt of Franciscan Complex Stratum_Keyword: Serpentinized ultramafic rocks of Central belt of Franciscan Complex Stratum_Keyword: Blueschist block of Central belt of Franciscan Complex Stratum_Keyword: Sandstone, shale, and conglomerate of Central belt of Franciscan Complex Stratum_Keyword: Radiolarian chert of Marin Headlands-Geysers terrane Stratum_Keyword: Basaltic volcanic rocks of Central belt of Franciscan Complex Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: Mesozoic Temporal_Keyword: Jurassic Temporal_Keyword: Cretaceous Temporal_Keyword: Cenozoic Temporal_Keyword: Tertiary Temporal_Keyword: Neogene Temporal_Keyword: Miocene Temporal_Keyword: Pliocene Temporal_Keyword: Quaternary Temporal_Keyword: Pleistocene Temporal_Keyword: Holocene Access_Constraints: None Use_Constraints: Uses of this digital geologic map should not violate the spatial resolution of the data. Although the digital form of the data removes the constraint imposed by the scale of a paper map, the detail and accuracy inherent in map scale are also present in the digital data. The fact that this database was edited for a scale of 1:24,000 means that higher resolution information is not present in the dataset. Plotting at scales larger than 1:24,000 will not yield greater real detail, although it may reveal fine-scale irregularities below the intended resolution of the database. Similarly, where this database is used in combination with other data of higher resolution, the resolution of the combined output will be limited by the lower resolution of these data. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS Western Geologic Mapping Team Contact_Person: R.J. McLaughlin Contact_Address: Address_Type: mailing address Address: 345 Middlefield Road, MS 973 City: Menlo Park State_or_Province: CA Postal_Code: 94025 Country: USA Data_Set_Credit: The authors are grateful to our numerous colleagues involved in related cooperative investigations within or adjacent to the map area, including: D. Wagner and S. Bezore (CGS), C. Prentice (USGS), C. Fenton (URS Corporation), J.R. Allen (USGS and SJSU), C. Randolph-Loar (SFSU), J.S. Whitlock (Pennsylvania State University), K. Furlong (Pennsylvania State University), J. Lock (Pennsylvania State University), H.M. Kelsey (HSU), C.M. Wentworth (USGS), R. Witter (W. Lettis and Associates), R.W. Graymer (USGS), R.C. Jachens (USGS), and C. Roberts (USGS). We thank these fellow scientists for productive discussions and exchanges of information in the office and field. Micropaleontologic support was provided by S.W. Starratt (USGS), and D.E. Peterson (California Academy of Science). Invertebrate paleontologic support was provided by C.L. Powell, II. C.A. Repenning (USGS, emeritus) kindly identified and provided important taxonomic information for a vertebrate fossil from the adjacent Santa Rosa 7.5' quadrangle. Laboratory support for tephrochronology was provided by J.P. Walker (USGS), E. Wan (USGS), and C.E. Meyer (USGS, retired). Rock grinding and analytical support for radiometric dating was provided by D. Shamp. We thank P. Lyttle, Coordinator for the National Cooperative Geologic Mapping Program of the USGS, and D.P. Schwartz, Chief of the San Francisco Bay Region project of the National Earthquake Hazards Reduction Program of the USGS, for their support of the geologic mapping. The authors are grateful to R.C. Evarts (USGS), E.A. Mankinen (USGS), and D. Wagner (CGS) for their thorough scientific reviews of these maps as well as their willingness to return them to us in a timely manner. We are also grateful to R. W. Graymer his help and advice in the digital preparation and formatting of these maps for publication. We also thank G. Phelps (USGS) for his careful digital review. We thank (name) of the USGS Western Publications Group for (pronoun) careful editing which substantially improved this report. Security_Information: Security_Classification_System: None Security_Classification: Unclassified Security_Handling_Description: None Native_Data_Set_Environment: SunOS, 5.5.1, sun4u UNIX, ARC/INFO version 8.1.2 Cross_Reference: Citation_Information: Originator: Originator: Originator: Publication_Date: Title: Geospatial_Data_Presentation_Form: Series_Information Series_Name: Issue_Identification: Other_Citation_Details: Online_Linkage: Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: See Entity_Attribute_Information Quantitative_Attribute_Accuracy_Assessment: Attribute_Accuracy_Value: See Explanation Attribute_Accuracy_Explanation: Attribute accuracy is described, where present, with each attribute defined in the Entity and Attribute Section. Logical_Consistency_Report: Polygon and chain-node topology present Completeness_Report: The report is intended to describe completely the surficial deposits and bedrock geology at 1:24,000 scale. Geologic information only mappable at larger scale has been omitted. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Well located data items are intended to have a horizontal positional accuracy within .5 mm at 1:24,000 scale, or within 12 meters on the ground. The general positional accuracy of each line in the database is indicated within the LTYPE field in the Arc Attribute Table (see below). Points in the database are generally considered to be well located. The position of each data item is derived from the USGS topographic base map, and therefore additional inaccuracies arising from inaccuracies in the base map may also be encountered. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: No vertical positional data recorded. Lineage: See also Supplemental_Information: Source_Information: Source_Citation: Citation_Information: Originator: Publication_Date: Title: Series_Information: Series_Name: Issue_Identification: Source_Scale_Denominator: Type_Of_Source_Media: Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: Source_Currentness_Reference: Source_Citation_Abbreviation: Source_Contribution: Process_Step: Process_Description: Geologic linework was scanned, converted to vector data, and edited on-screen to repair errors visible at map scale. Polygon topology was created and each polygon tagged on-screen. Structural information was digitized by hand using a digitizing table. Plotfiles were created in ArcPlot. Cloud_Cover: Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point SDTS_Point_and_Vector_Object_Type: String 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 Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 10 Transverse_Mercator: Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 1.0 Ordinate_Resolution: 1.0 Planar_Distance_Units: METERS Geodetic_Model: Horizontal_Datum_Name: NAD27 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.98 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: MWS-GEO.PAT Entity_Type_Definition: Attribute table of MWS-GEO.PAT. 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Enumerated_Domain_Value_Definition: Franciscan Complex, Sandstone, shale and conglomerate (Upper Cretaceous to Lower Jurassic), identification uncertain Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: fcv Enumerated_Domain_Value_Definition: Franciscan Complex, Basalt (Upper Cretaceous to Lower Jurassic) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: gd Enumerated_Domain_Value_Definition: Franciscan Complex, Gabbro (Upper Cretaceous to Lower Jurassic) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: ms Enumerated_Domain_Value_Definition: Franciscan Complex, Metasandstone (Upper Cretaceous to Lower Jurassic) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: mv Enumerated_Domain_Value_Definition: Franciscan Complex, Metabasalt (Upper Cretaceous to Lower Jurassic) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: sc Enumerated_Domain_Value_Definition: Silica carbonate rock (Pleistocene and Pliocene) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: ss Enumerated_Domain_Value_Definition: Franciscan Complex, Sandstone and shale (Upper Cretaceous to Lower Jurassic) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: water Enumerated_Domain_Value_Definition: water Enumerated_Domain_Value_Definition_Source: author Entity_Type: Entity_Type_Label: MWS-GEO.AAT Entity_Type_Definition: Attribute table of MWS-GEO. Entity_Type_Definition_Source: ARC/INFO Attribute: Attribute_Label: - Attribute_Definition: Attribute table of MWS-GEO. Attribute_Definition_Source: ARC/INFO Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: - Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: FNODE# Attribute_Definition: Internal number of from-node Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: TNODE# Attribute_Definition: Internal number of to-node Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: LPOLY# Attribute_Definition: Internal number of poly to left of arc Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: RPOLY# Attribute_Definition: Internal number of poly to right of arc Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: LENGTH Attribute_Definition: Length of arc in coverage units Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Positive real numbers Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MWS-GEO# Attribute_Definition: Internal feature number Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MWS-GEO-ID Attribute_Definition: User-assigned feature number Attribute_Definition_Source: User-defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Integer Enumerated_Domain_Value_Definition: Set equal to MWS-GEO# Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: LTYPE Attribute_Definition: Type of geologic or geographic feature denoted by a line in the database. Attribute_Definition_Source: author Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: H2O_edge Enumerated_Domain_Value_Definition: Dam edge around reservoir. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: QTgt Enumerated_Domain_Value_Definition: Mappable sedimentary horizon composed largely of siliceous tuff. The horizon has been observed or is closely constrained, so it is well-located as described in Positional_Accuracy Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: contact, approx. located Enumerated_Domain_Value_Definition: Boundary between two mapped units that retains the original depositional or intrusive relationship (i.e. not faulted). The contact has not been observed, so it is not well-located as described in Positional_Accuracy, but the location is constrained to be within about 2 mm at map scale (1:24,000) or within about 48 meters on the ground. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: contact, basement Enumerated_Domain_Value_Definition: Estimated position of buried basement contact between andesite, basaltic andesite and basalt, and undifferentiated central belt Franciscan Complex melange. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: contact, certain Enumerated_Domain_Value_Definition: Boundary between two mapped units that retains the original depositional or intrusive relationship (i.e. not faulted). The contact has been observed or is closely constrained, so it is well-located as described in Positional_Accuracy. Enumerated_Domain_Value_Definition_Source: author Enumerated _Domain: Enumerated_Domain_Value: contact, concealed Enumerated_Domain_Value_Definition: Boundary between two mapped units that retains the original depositional or intrusive relationship (i.e. not faulted). The contact is obscured by overlying mapped units, so it is not well-located as described in Positional_Accuracy, but the location is constrained to be within about 5 mm at map scale (1:24,000) or within about 120 meters on the ground. Enumerated _Domain: Enumerated_Domain_Value: contact, concealed , queried Enumerated_Domain_Value_Definition: Boundary between two mapped units that retains the original depositional or intrusive relationship (i.e. not faulted). The contact is obscured by overlying mapped units, so it is not well-located as described in Positional_Accuracy, but the location is constrained to be within about 10 mm at map scale (1:24,000) or within about 240 meters on the ground. Enumerated_Domain: Enumerated_Domain_Value: contact, inferred, queried Enumerated_Domain_Value_Definition: Boundary between two mapped units that retains the original depositional or intrusive relationship (i.e. not faulted). The contact has not been observed, so it is not well-located as described in Positional_Accuracy, but the location is constrained to be within about 10 mm at map scale (1:24,000) or within about 240 meters on the ground. The existence of the contact is inferred from structural and stratigraphic relationships observed elsewhere. Enumerated_Domain_Value: contact, pit Enumerated_Domain_Value_Definition: Closed depression or sag pond. The boundary has been observed or is closely constrained, so it is well-located as described in Positional_Accuracy. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: fault, certain Enumerated_Domain_Value_Definition: Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset between the rock bodies on either side of the fault. The fault has been observed or is closely constrained, so it is well located as described in Positional_Accuracy. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: fault, concealed Enumerated_Domain_Value_Definition: Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset between the rock bodies on either side of the fault. The fault is obscured by overlying mapped units, so it is not well located as described in Positional_Accuracy, but the location is constrained to be within about 5 mm at map scale (1:24,000) or within about 120 meters on the ground. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: fault, concealed, queried Enumerated_Domain_Value_Definition: Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset between the rock bodies on either side of the fault. The fault is obscured by overlying mapped units, so it is not well located as described in Positional_Accuracy, but the location is constrained to be within about 10 mm at map scale (1:24,000) or within about 240 meters on the ground. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: fault, inferred Enumerated_Domain_Value_Definition: Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset between the rock bodies on either side of the fault. The fault has not been observed, so it is not well-located as described in Positional_Accuracy, but the location is constrained to be within about 5 mm at map scale (1:24,000) or within about 120 meters on the ground. The existence of the fault is inferred from structural and stratigraphic relationships observed elsewhere. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: fault, inferred, queried Enumerated_Domain_Value_Definition: Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset between the rock bodies on either side of the fault. The fault has not been observed, so it is not well-located as described in Positional_Accuracy, but the location is constrained to be within about 10 mm at map scale (1:24,000) or within about 240 meters on the ground. The existence of the fault is inferred from structural and stratigraphic relationships observed elsewhere. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: map boundary Enumerated_Domain_Value_Definition: Edge of the mapped area. Used primarily to bound polygons at the edge of the map database. The location of the boundary is well located as described in Positional_Accuracy. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: marker bed Enumerated_Domain_Value_Definition: Mappable sedimentary horizon with known stratigraphic position, having distinct lithologic attributes. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: photo lineament Enumerated_Domain_Value_Definition: Linear physiographic feature, delineated by alignment of topographic features, i.e. offsets or alignments of drainages, gullys, ridges, valley fronts, scarps or steps in topography. They are generally delineated from aerial photographs. They are inferred to be related to faulting, although are seldom checked in the field. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: scratch boundary Enumerated_Domain_Value_Definition: An arbitrary line with no geologic or geographic significance. Used primarily to divide polygons that would otherwise have more vertices than allowed by Arc/Info. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: shear zone Enumerated_Domain_Value_Definition: Mappable area of fault-brecciated rock resulting from shear strain of the associated fault zone. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: water boundary Enumerated_Domain_Value_Definition: The edge of a mapped body of water. This line is derived from the base map, and therefore is well-located as described in Positional_Accuracy. Enumerated_Domain_Value_Definition_Source: author Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: MWS-STR.PAT Entity_Type_Definition: Attribute table of MWS-STR. Entity_Type_Definition_Source: ARC/INFO Attribute: Attribute_Label: - Attribute_Definition: Attribute table of MWS-STR. Attribute_Definition_Source: ARC/INFO Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: - Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: AREA Attribute_Definition: Degenerate area of point Attribute_Definition_Source: Assigned Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0 Enumerated_Domain_Value_Definition: No area for points Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: PERIMETER Attribute_Definition: Degenerate perimeter of point Attribute_Definition_Source: Assigned Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0 Enumerated_Domain_Value_Definition: No perimeter for points Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: MWS-STR# Attribute_Definition: Internal feature number Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MWS-STR-ID Attribute_Definition: User-assigned feature number Attribute_Definition_Source: User-defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Integer Enumerated_Domain_Value_Definition: Calculated to equal MWS-STR# Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: PTTYPE Attribute_Definition: The type of planar feature which was observed and the orientation of which was measured at this point. Attribute_Definition_Source: author Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: air photo attitude Enumerated_Domain_Value_Definition: Approximate attitude, determined by sighting from distant location. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: bedding Enumerated_Domain_Value_Definition: Originally horizontal sedimentary layers were observed at this point. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: bedding w/tops Enumerated_Domain_Value_Definition: Originally horizontal sedimentary layers were observed at this point. In addition, a geopedal indicator was observed that showed the beds were upright. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: diamond fill Enumerated_Domain_Value_Definition: Diamond astride fault indicates vertical dip. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: f.a., anticline, certain Enumerated_Domain_Value_Definition: Arrows depict downward inclination of fold, away from axis. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: f.a., syncline, certain Enumerated_Domain_Value_Definition: Arrows depict upward inclination of fold, toward axis. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: foliation Enumerated_Domain_Value_Definition: Metamorphic foliation was observed at this point. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: vert bedding Enumerated_Domain_Value_ Definition: Metamorphic foliation was observed at this point. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: small syncline Enumerated_Domain_Value_Definition: Outcrop sized syncline. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: vert foliation and bedding Enumerated_Domain_Value_Definition: Foliation due to shearing or metamorphism was observed at this point. This foliation is vertical. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: inclined cleavage Enumerated_Domain_Value_Definition: Closely-spaced, sub-parallel planar structures in metamorphic rock, non-horizontal and non-vertical, produced by deformation or metamorphism were observed here. Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: DIP Attribute_Definition: The inclination of planar structures measured in degrees down from horizontal. Attribute_Definition_Source: author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 90 Attribute_Units_of_Measure: degrees Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: STRIKE Attribute_Definition: The orientation of a horizontal line in an inclined planar structure measured in degrees clockwise from north. Attribute_Definition_Source: author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 359 Attribute_Units_of_Measure: degrees Attribute_Measurement_Resolution: 1 Entity_Type: Entity_Type_Label: MWS-STR.AAT Entity_Type_Definition: Attribute table of MWS-STR. Entity_Type_Definition_Source: ARC/INFO Attribute: Attribute_Label: - Attribute_Definition: Attribute table of MWS-STR. Attribute_Definition_Source: ARC/INFO Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: - Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: FNODE# Attribute_Definition: Internal number of from-node Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: TNODE# Attribute_Definition: Internal number of to-node Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: LPOLY# Attribute_Definition: Internal number of poly to left of arc Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: RPOLY# Attribute_Definition: Internal number of poly to right of arc Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: LENGTH Attribute_Definition: Length of arc in coverage units Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Positive real numbers Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MWS-STR# Attribute_Definition: Internal feature number Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MWS-STR-ID Attribute_Definition: User-assigned feature number Attribute_Definition_Source: User-defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Integer Enumerated_Domain_Value_Definition: Calculated to equal MWS-STR# Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: LTYPE Attribute_Definition: The type of fold axis or other structural linear feature that does not bound geologic units. Faults and contacts are described in a separate coverage. Attribute_Definition_Source: author Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: f.a., anticline Enumerated_Domain_Value_Definition: The surface trace of the axis of an anticline. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: f.a., anticline, concealed Enumerated_Domain_Value_Definition: The surface trace of the axis of an anticline. The axis is obscured by overlying mapped units, so it is not well-located as described in Positional_Accuracy, but the location is constrained to be within about 5 mm at map scale (1:24,000) or within about 120 meters on the ground. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: f.a., syncline Enumerated_Domain_Value_Definition: The surface trace of the axis of a syncline. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: f.a., syncline, concealed Enumerated_Domain_Value_Definition: The surface trace of the axis of a syncline. The axis is obscured by overlying mapped units, so it is not well-located as described in Positional_Accuracy, but the location is constrained to be within about 5 mm at map scale (1:24,000) or within about 120 meters on the ground. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: scarp Enumerated_Domain_Value_Definition: Location of fault scarp. The location is well located as described in Positional_Accuracy. Enumerated_Domain_Value_Definition_Source: author Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: MWS-HYD.PAT Entity_Type_Definition: Attribute table of MWS-HYD.PAT. Entity_Type_Definition_Source: ARC/INFO Attribute: Attribute_Label: - Attribute_Definition: Attribute table of MWS-HYD.PAT. Attribute_Definition_Source: ARC/INFO Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: - Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: AREA Attribute_Definition: Area of poly/region in square coverage units Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Positive real numbers Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of poly/region in coverage units Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Positive real numbers Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MWS-HYD# Attribute_Definition: Internal feature number Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MWS-HYD-ID Attribute_Definition: User-assigned feature number Attribute_Definition_Source: User-defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Integer Enumerated_Domain_Value_Definition: Set equal to MWS-HYD# Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: PTYPE Attribute_Definition: Hydrothermal alteration unit label Attribute_Definition_Source: author Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: ha Enumerated_Domain_Value_Definition: Area of hydrothermal alteration, mappable at surface Enumerated_Domain_Value_Definition_Source: author Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: MWS-PNT.PAT Entity_Type_Definition: Attribute table of MWS-PNT. Entity_Type_Definition_Source: ARC/INFO Attribute: Attribute_Label: - Attribute_Definition: Attribute table of MWS-PNT. Attribute_Definition_Source: ARC/INFO Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: - Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: AREA Attribute_Definition: Degenerate area of point Attribute_Definition_Source: Assigned Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0 Enumerated_Domain_Value_Definition: No area for points Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: PERIMETER Attribute_Definition: Degenerate perimeter of point Attribute_Definition_Source: Assigned Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0 Enumerated_Domain_Value_Definition: No perimeter for points Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: MWS-PNT# Attribute_Definition: Internal feature number Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MWS-PNT-ID Attribute_Definition: User-assigned feature number Attribute_Definition_Source: User-defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Integer Enumerated_Domain_Value_Definition: Calculated to equal MWS-PNT# Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: PTTYPE Attribute_Definition: The type of planar feature which was observed and the orientation of which was measured at this point. Attribute_Definition_Source: author Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: open pit or glory hole Enumerated_Domain_Value_Definition: Open pit, quarry, or glory hole. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: dry hole Enumerated_Domain_Value_Definition: Dry hole; abandoned drill hole for water. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: water well Enumerated_Domain_Value_Definition: Water well. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: fossil locality Enumerated_Domain_Value_Definition: Fossil locality. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: spring Enumerated_Domain_Value_Definition: Spring. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: thermal spring Enumerated_Domain_Value_Definition: Thermal spring. Enumerated_Domain_Value_Definition_Source: author Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: MWS-TPH.PAT Entity_Type_Definition: Attribute table of MWS-TPH. Entity_Type_Definition_Source: ARC/INFO Attribute: Attribute_Label: - Attribute_Definition: Attribute table of MWS-TPH. Attribute_Definition_Source: ARC/INFO Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: - Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: AREA Attribute_Definition: Degenerate area of point Attribute_Definition_Source: Assigned Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0 Enumerated_Domain_Value_Definition: No area for points Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: PERIMETER Attribute_Definition: Degenerate perimeter of point Attribute_Definition_Source: Assigned Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0 Enumerated_Domain_Value_Definition: No perimeter for points Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: MWS-TPH# Attribute_Definition: Internal feature number Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MWS-TPH-ID Attribute_Definition: User-assigned feature number Attribute_Definition_Source: User-defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Integer Enumerated_Domain_Value_Definition: Calculated to equal MWS-TPH# Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: PTTYPE Attribute_Definition: The type of planar feature which was observed and the orientation of which was measured at this point. Attribute_Definition_Source: author Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: geochron 10 Enumerated_Domain_Value_Definition: Sample locality #10, 40Ar/39Ar dated at 3.19(0.04 Ma, (1(. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: geochron 19 Enumerated_Domain_Value_Definition: Sample locality #19, 40Ar/39Ar dated at 2.85(0.02 Ma, (1(. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: geochron 27 Enumerated_Domain_Value_Definition: Sample locality #27, 40Ar/39Ar dated at 3.19(0.02 Ma, (1(. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: geochron 31 Enumerated_Domain_Value_Definition: Sample locality #31, 40Ar/39Ar dated at 5.40(0.20 Ma, (1(. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: geochron 44, 45 Enumerated_Domain_Value_Definition: Sample locality #44, 40Ar/39Ar dated at 5.02(0.20 Ma, (1(; Sample locality #45, 40Ar/39Ar dated at 4.85(0.03 Ma, (1(. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: geochron 63 Enumerated_Domain_Value_Definition: Sample locality #63, 40Ar/39Ar dated at 4.60(0.05 Ma, (1(. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 1 Enumerated_Domain_Value_Definition: Sample locality #1, tephrochronologically dated as indeterminate; most like locality #62. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 13 Enumerated_Domain_Value_Definition: Sample locality #13, tephrochronologically dated at >2.85, <3.34? Ma. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 15 Enumerated_Domain_Value_Definition: Sample locality #15, tephrochronologically dated at 2.85(0.02 Ma, (1(. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 21 Enumerated_Domain_Value_Definition: Sample locality #21, tephrochronologically dated at 2.85(0.02 Ma, (1(. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 22 Enumerated_Domain_Value_Definition: Sample locality #22, tephrochronologically dated at 2.85(0.02 Ma, (1(. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 23 Enumerated_Domain_Value_Definition: Sample locality #23, tephrochronologically dated as indeterminate; heterogeneous shard population. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 26 Enumerated_Domain_Value_Definition: Sample locality #26, tephrochronologically dated at 3.19(0.02 Ma, (1(. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 28 Enumerated_Domain_Value_Definition: Sample locality #28, tephrochronologically dated at >3.19, <5.04 Ma. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 29 Enumerated_Domain_Value_Definition: Sample locality #29, tephrochronologically dated at >3.22, <3.34 Ma. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 3 Enumerated_Domain_Value_Definition: Sample locality #3, tephrochronologically dated as indeterminate; most like locality #62. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 30 Enumerated_Domain_Value_Definition: Sample locality #30, tephrochronologically dated at >3.19, <5.04 (?) Ma. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 32 Enumerated_Domain_Value_Definition: Sample locality #32, tephrochronologically dated at >3.19, <5.04 (?) Ma. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 33 Enumerated_Domain_Value_Definition: Sample locality #33, tephrochronologically dated at 3.19(0.02 (?) Ma, (1(. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 34 Enumerated_Domain_Value_Definition: Sample locality #34, tephrochronologically dated at 3.19(0.02 (?) Ma, (1(. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 35 Enumerated_Domain_Value_Definition: Sample locality #35, tephrochronologically dated at >3.22, <3.34 Ma. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 36 Enumerated_Domain_Value_Definition: Sample locality #36, tephrochronologically dated at >3.22, <3.34 (?) Ma. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 38 Enumerated_Domain_Value_Definition: Sample locality #38, tephrochronologically dated at ò3.19, ó3.34 Ma. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 40 Enumerated_Domain_Value_Definition: Sample locality #40, tephrochronologically dated at ò3.19, ó3.34 Ma. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 42 Enumerated_Domain_Value_Definition: Sample locality #42, tephrochronologically dated at 3.19(0.02 Ma, (1(. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 46 Enumerated_Domain_Value_Definition: Sample locality #46, tephrochronologically dated at 4.83 Ma. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 47 Enumerated_Domain_Value_Definition: Sample locality #47, tephrochronologically dated at >4.83, <5.0 Ma. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 48 Enumerated_Domain_Value_Definition: Sample locality #48, tephrochronologically dated at 3.34 Ma. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 50 Enumerated_Domain_Value_Definition: Sample locality #50, tephrochronologically dated as indeterminate; similar to locality #35. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 54 Enumerated_Domain_Value_Definition: Sample locality #54, tephrochronologically dated as indeterminate; most like locality #23. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 55 Enumerated_Domain_Value_Definition: Sample locality #55, tephrochronologically dated at ò3.19, ó3.34 (?) Ma. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 58 Enumerated_Domain_Value_Definition: Sample locality #58, tephrochronologically dated as stratigraphically above locality #62. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 6 Enumerated_Domain_Value_Definition: Sample locality #6, tephrochronologically dated as indeterminate; most like locality #23. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 60 Enumerated_Domain_Value_Definition: Sample locality #60, tephrochronologically dated as indeterminate; but must be ó3.12 Ma. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra 61 Enumerated_Domain_Value_Definition: Sample locality #61, tephrochronologically dated as indeterminate; but must be ó3.12 Ma. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra/geochron 62 Enumerated_Domain_Value_Definition: Sample locality #62, dated by both 40Ar/39Ar and tephrochronology, at 3.12(0.03 Ma, (1(. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: tephra51 Enumerated_Domain_Value_Definition: Sample locality #51, tephrochronologically dated at >4.83, >5.0 Ma. Enumerated_Domain_Value_Definition_Source: author Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: MWS-SMB.PAT Entity_Type_Definition: Attribute table of MWS-SMB. Entity_Type_Definition_Source: ARC/INFO Attribute: Attribute_Label: - Attribute_Definition: Attribute table of MWS-SMB. Attribute_Definition_Source: ARC/INFO Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: - Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: AREA Attribute_Definition: Degenerate area of point Attribute_Definition_Source: Assigned Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0 Enumerated_Domain_Value_Definition: No area for points Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: PERIMETER Attribute_Definition: Degenerate perimeter of point Attribute_Definition_Source: Assigned Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0 Enumerated_Domain_Value_Definition: No perimeter for points Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: MWS-SMB# Attribute_Definition: Internal feature number Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MWS-SMB-ID Attribute_Definition: User-assigned feature number Attribute_Definition_Source: User-defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Integer Enumerated_Domain_Value_Definition: Calculated to equal MWS-SMB# Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: PTTYPE Attribute_Definition: The type of planar feature which was observed and the orientation of which was measured at this point. Attribute_Definition_Source: author Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: RA Enumerated_Domain_Value_Definition: Arrow used to represent right-lateral strike-slip on a fault, in areas where the 'fault ss rl' symbol does not fit. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: _l_lineation_att_i_ Enumerated_Domain_Value_Definition: Arrow and number at angle to fault indicates rake of lineation. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: _l_lineation_i_ Enumerated_Domain_Value_Definition: Arrow and number at angle to fault indicates rake of lineation. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: _l_syncline_i_ Enumerated_Domain_Value_Definition: Overturned syncline. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: diamond fill Enumerated_Domain_Value_Definition: Diamond astride fault indicates vertical dip. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: fault ball Enumerated_Domain_Value_Definition: Bar and ball on down-dropped fault block. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: fault dip fill Enumerated_Domain_Value_Definition: Arrow and number normal to fault indicate dip of fault plane. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: fault ss ll Enumerated_Domain_Value_Definition: Single-sided arrows show direction of relative movement of fault. This symbol indicates left-lateral movement. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: fault ss ll sm Enumerated_Domain_Value_Definition: Single-sided arrows show direction of relative movement of fault. This symbol indicates left-lateral movement. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: fault ss rl Enumerated_Domain_Value_Definition: Single-sided arrows show direction of relative movement of fault. This symbol indicates right-lateral movement. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: fault ss rl sm Enumerated_Domain_Value_Definition: Single-sided arrows show direction of relative movement of fault. This symbol indicates right-lateral movement. Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: DIP Attribute_Definition: The inclination of planar structures measured in degrees down from horizontal. Attribute_Definition_Source: author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 90 Attribute_Units_of_Measure: degrees Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: STRIKE Attribute_Definition: The orientation of a horizontal line in an inclined planar structure measured in degrees clockwise from north. Attribute_Definition_Source: author Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 359 Attribute_Units_of_Measure: degrees Attribute_Measurement_Resolution: 1 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: MWS-LDS.AAT Entity_Type_Definition: Attribute table of MWS-LDS. Entity_Type_Definition_Source: ARC/INFO Attribute: Attribute_Label: - Attribute_Definition: Attribute table of MWS-LDS. Attribute_Definition_Source: ARC/INFO Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: - Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: FNODE# Attribute_Definition: Internal number of from-node Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: TNODE# Attribute_Definition: Internal number of to-node Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: LPOLY# Attribute_Definition: Internal number of poly to left of arc Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: RPOLY# Attribute_Definition: Internal number of poly to right of arc Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: LENGTH Attribute_Definition: Length of arc in coverage units Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Positive real numbers Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MWS-LDS# Attribute_Definition: Internal feature number Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: MWS-LDS-ID Attribute_Definition: User-assigned feature number Attribute_Definition_Source: User-defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Integer Enumerated_Domain_Value_Definition: Set equal to MWS-LDS# Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: LTYPE Attribute_Definition: Type of geologic or geographic feature denoted by a line in the database. Attribute_Definition_Source: author Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: landslide Enumerated_Domain_Value_Definition: Landslide arrow, showing general direction of slide. Enumerated_Domain_Value_Definition_Source: author Overview_Description: Entity_and_Attribute_Overview: The databases in this report were compiled in ARC/INFO, a commercial Geographic Information System (Environmental Systems Research Institute, Redlands, California). Almost all the attributes in the various attribute tables of the coverages included in the report are set or calculated by Arc/Info. The exceptions are "coveragename"-ID, LTYPE, PTYPE, PTTYPE, SAMPNO, STRIKE, and DIP. "coveragename"-ID is required by internal policy to be sequential. This ensures the highest compatibility of our databases with other GISs. Therefore "coveragename"-ID is calculated equal to "coveragename"#, which is a unique, sequential integer assigned by Arc/Info to each data record. LTYPE, PTYPE, BKTYPE, and PTTYPE are author added items to the coverage AAT or PAT that are used to describe the type of line (LTYPE), area (PTYPE) or point (PTTYPE) being recorded. All coverages with AAT and PAT present include these items in the data structure, although in some cases these items are not used (see above). Each has WIDTH 35, OUTPUT 35, TYPE C. STRIKE and DIP are author added items to the coverage PAT that record information about the orientation of planar geologic structures. Both have WIDTH 3, OUTPUT 3, TYPE I. These items are recorded in the tables MWS-STR.PAT of the structure coverages. The base map layers are included for visual reference only and contain no data attributes or attribute tables. Entity_and_Attribute_Detail_Citation: This report combined with the explanatory pamphlet SIM2858-pamphlet.pdf. Distribution_Information: Distributor: U.S. Geological Survey Digital_Form: Digital_Transfer_Information: Format_Name: PDF plotfile packages, SIM2858-sheet1.pdf, SIM2858-sheet2.pdf, and SIM2858-pamphlet.pdf Format_Version_Number: Format_Version_Date: 2004 Format_Specification: Adobe Acrobat PDF files, v. 5.0 Format_Information_Content: 3 PDF (Adobe Acrobat) plotfiles, one for each map sheet and one for the pamphlet. File_Decompression_Technique: Transfer_Size: Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/sim/2004/2858 Digital_Form: Digital_Transfer_Information: Format_Name: Digital Database package, sim2858db.tgz Format_Version_Number: Format_Version_Date: 2003 Format_Specification: Arc/Info v. 8.1.2 Format_Information_Content: 7 Arc/Info interchange (.e00) files and import AML. File_Decompression_Technique: TAR and gzip Transfer_Size: Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/sim/2004/2858 Distributor: U.S. Geological Survey Contact_Information: Non-Digital Form Contact_Organization_Primary: Contact_Organization: USGS Information Services Contact_Address: Address_Type: mailing address Address: Box 25286, Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS (1-888-275-8747) Contact_Facsimile_Telephone: (303) 202-4693 Contact_Electronic_Mail_Address: infoservices@usgs.gov Hours_of_Service: Contact_Instructions: Resource_Description: USGS Scientific Investigations Map 2858 consists of both traditional geologic map products and Arc/Info format geospatial databases. Furthermore, the traditional geologic map products (map sheets and pamphlet) can be obtained either as paper or as digital plot files. Distribution_Liability: Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this publication 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: Non-digital_Form: Paper copies of the map sheets and pamphlet can be obtained by contacting USGS Information Services via the contact information listed above. Fees: Plotting fees are set by USGS Information Services, and may be obtained by contacting them via the contact information given above. Ordering_Instructions: Paper copies of the map sheets and pamphlet can be obtained by contacting USGS Information Services via the contact information listed above. Metadata_Reference_Information: Metadata_Date: 2004 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: R.J. McLaughlin Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: Mailing Address: 345 Middlefield Rd., M/S 973 City: Menlo Park State_or_Province: CA Postal_Code: 94025 Country: USA Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: 19940608 Metadata_Time_Convention: Local Time Metadata_Security_Information: Metadata_Security_Classification_System: None Metadata_Security_Classification: Unclassified Metadata_Security_Handling_Description: None