Identification_Information: Citation: Citation_Information: Originator: Stone, Paul Publication_Date: 2006 Title: Preliminary geologic map of the Black Mountain area northeast of Victorville, San Bernardino County, California Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 2006-1347 Publication_Information: Publication_Place: Menlo Park, CA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2006/1347 Description: Abstract: This digital map database, based entirely on new geologic mapping by the author, represents the general distribution of bedrock and surficial deposits in the mapped area. This map 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. Purpose: This database and accompanying plot files depict the distribution of geologic materials and structures at a scale of 1:12,000. The report is intended to provide geologic information for the regional study of materials properties, earthquake shaking, landslide potential, mineral hazards, mineral and energy resources, seismic velocity, and earthquake faults. 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, the database cannot be substituted for comprehensive maps that systematically identify and classify landslide hazards. Supplemental_Information: The databases in this report were compiled in ARC/INFO, a commercial Geographic Information System (Environmental Systems Research Institute, Redlands, California). The files are 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. The geologic map information was digitized from stable originals of the geologic map at 1:12,000 scale. The author manuscripts (pen on mylar) were scanned. The scanned images were vectorized and transformed from scanner coordinates to projection coordinates with digital tics placed by hand at map corners. The scanned lines were edited interactively by hand, color boundaries were tagged as appropriate, and some scanning artifacts visible at 1:12,000 were removed. This report has undergone two scientific peer reviews and a digital database review. This report consists of a set of geologic map database files (Arc/Info coverages) and plotfiles. The base map layer used in the preparation of the geologic map plotfiles was derived from Digital Raster Graphics (DRGs) of the Fairview Valley, Turtle Valley, Stoddard Wells, and Apple Valley North quadrangles (scale 1:24,000) produced by the U.S. Geological Survey. The base map has a contour interval of 20 feet in some areas and 40 feet in other areas. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2006 Currentness_Reference: New data Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -117.167 East_Bounding_Coordinate: -117.097 North_Bounding_Coordinate: 34.646 South_Bounding_Coordinate: 34.608 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: geology Theme_Keyword: bedrock geology Theme_Keyword: surficial geology Theme_Keyword: geologic history Theme_Keyword: structural geology Theme_Keyword: Helendale Fault Theme_Keyword: geologic map Theme_Keyword: digital database Place: Place_Keyword_Thesaurus: None Place_Keyword: United States of America Place_Keyword: California Place_Keyword: San Bernardino County Place_Keyword: Victorville Place_Keyword: Mojave Desert Place_Keyword: Black Mountain Quarry Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: Fairview Valley Formation Stratum_Keyword: Sidewinder Volcanics Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: Cenozoic Temporal_Keyword: Quaternary Temporal_Keyword: Tertiary Temporal_Keyword: Mesozoic Temporal_Keyword: Cretaceous Temporal_Keyword: Jurassic Temporal_Keyword: Triassic Temporal_Keyword: Paleozoic Temporal_Keyword: Permian Temporal_Keyword: Pennsylvanian Temporal_Keyword: Mississippian Temporal_Keyword: Devonian Temporal_Keyword: Cambrian Temporal_Keyword: Proterozoic 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 1:12,000 means that higher resolution information is not present in the dataset. Plotting at scales larger than 1:12,000 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_Person_Primary: Contact_Person: Paul Stone Contact_Organization: U.S. Geological Survey, Western Region, Earth Surface Processes Team Contact_Position: Project geologist Contact_Address: Address_Type: Mailing address Address: 345 Middlefield Road, MS 973 City: Menlo Park State_or_Province: CA Postal_Code: 94025 Country: USA Contact_Voice_Telephone: (650)329-4931 Contact_Facsimile_Telephone: (650)329-4936 Contact_Electronic_Mail_Address: pastone@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: Browse_Graphic_File_Description: Browse_Graphic_File_Type: Data_Set_Credit: Geologic mapping, map compilation, and digital database preparation by Paul Stone. Scientific peer reviews by K. Howard and R. Graymer. Metadata review by Z. Valin. 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 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: See Entity_and_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 1:12,000 scale. Geologic information only mappable at larger scale has been omitted. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Although the database was edited for a scale of 1:12,000, the data were originally located using aerial photographs and topographic maps at a scale of 1:24,000. The scale of these base maps and aerial photographs limits the horizontal positional accuracy of the data points and lines that comprise the database. 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. Points in the database are generally considered well located. About 1650 of the data points used in compiling the geologic map were located in the field with a hand-held GPS, with a nominal horizontal accuracy averaging about 6 m. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: No vertical positional data recorded. Lineage: 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 on-screen. Plotfiles were created in ArcPlot. Process_Date: 2006 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_Terms_Description: SDTS_Point_and_Vector_Object_Type: String 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: State Plane Coordinate System 1927 State_Plane_Coordinate_System: SPCS_Zone_Identifier: California Zone 5 Lambert_Conformal_Conic: Standard_Parallel: 34.033333 Standard_Parallel: 35.466667 Longitude_of_Central_Meridian: -118 Latitude_of_Projection_Origin: 33.5 False_Easting: 609601.2192 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000022 Ordinate_Resolution: 0.000022 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: BM_GEO.PAT Entity_Type_Definition: Polygon attribute table of BM_GEO.PAT. Entity_Type_Definition_Source: ARC/INFO 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: BM_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: BM_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 BM_GEO# Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: PTYPE Attribute_Definition: Geologic unit label Attribute_Definition_Source: author Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Jch Enumerated_Domain_Value_Definition: Rocks that lie between northern sequence of Sidewinder Volcanics and Fairview Valley Formation (Middle and/or Early Jurassic), calc-hornfels Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jfd Enumerated_Domain_Value_Definition: Dikes (Late Jurassic), felsic dikes Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jfv1 Enumerated_Domain_Value_Definition: Fairview Valley Formation (Early Jurassic), unit 1 Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jfv2 Enumerated_Domain_Value_Definition: Fairview Valley Formation (Early Jurassic), unit 2 Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jfv3 Enumerated_Domain_Value_Definition: Fairview Valley Formation (Early Jurassic), unit 3 Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jfv4 Enumerated_Domain_Value_Definition: Fairview Valley Formation (Early Jurassic), unit 4 Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jfv5 Enumerated_Domain_Value_Definition: Fairview Valley Formation (Early Jurassic), unit 5 Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jia Enumerated_Domain_Value_Definition: Intrusive andesite (Late or Middle Jurassic?) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jid Enumerated_Domain_Value_Definition: Dikes (Late Jurassic), intermediate-composition dikes Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jlcs Enumerated_Domain_Value_Definition: Rocks that lie between northern sequence of Sidewinder Volcanics and Fairview Valley Formation (Middle and/or Early Jurassic), limestone conglomerate with sandy matrix Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jmd Enumerated_Domain_Value_Definition: Dikes (Late Jurassic), mafic dikes Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jqmp Enumerated_Domain_Value_Definition: Quartz monzonite porphyry (Late Jurassic?) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jqp Enumerated_Domain_Value_Definition: Quartz porphyry (Late Jurassic?) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jqs Enumerated_Domain_Value_Definition: Rocks that lie between northern sequence of Sidewinder Volcanics and Fairview Valley Formation (Middle and/or Early Jurassic), quartzose sandstone Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jscg Enumerated_Domain_Value_Definition: Sidewinder Volcanics, conglomeratic rocks(Late and/or Middle Jurassic) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jsd Enumerated_Domain_Value_Definition: Sidewinder Volcanics, dacitic rocks (Late and/or Middle Jurassic), dacitic rocks, undivided Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jsdc Enumerated_Domain_Value_Definition: Sidewinder Volcanics, dacitic rocks (Late and/or Middle Jurassic), dacitic rocks, coarser-grained facies Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jsdcq Enumerated_Domain_Value_Definition: Sidewinder Volcanics, dacitic rocks (Late and/or Middle Jurassic), dacitic rocks, coarser-grained facies with abundant quartz Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jsdf Enumerated_Domain_Value_Definition: Sidewinder Volcanics, dacitic rocks (Late and/or Middle Jurassic), dacitic rocks, finer-grained facies Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jslr Enumerated_Domain_Value_Definition: Sidewinder Volcanics, laminated rhyolite (Late and/or Middle Jurassic) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jsnl Enumerated_Domain_Value_Definition: Sidewinder Volcanics, northern sequence (Middle and/or Early Jurassic), laminated volcanic rocks Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jsnq Enumerated_Domain_Value_Definition: Sidewinder Volcanics, northern sequence (Middle and/or Early Jurassic), quartzose sandstone Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jsnr Enumerated_Domain_Value_Definition: Sidewinder Volcanics, northern sequence (Middle and/or Early Jurassic), rhyolitic volcanic rocks Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jsns Enumerated_Domain_Value_Definition: Sidewinder Volcanics, northern sequence (Middle and/or Early Jurassic), sandstone and conglomerate Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Jvc Enumerated_Domain_Value_Definition: Rocks that lie between northern sequence of Sidewinder Volcanics and Fairview Valley Formation (Middle and/or Early Jurassic), volcanic conglomerate Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: KJg Enumerated_Domain_Value_Definition: Granite (Cretaceous and/or Jurassic) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: KJmp Enumerated_Domain_Value_Definition: Monzonite porphyry (Cretaceous or Jurassic) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: KJps Enumerated_Domain_Value_Definition: Plutonic rocks near Sidewinder Mine (Cretaceous and/or Jurassic) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: MZPZm Enumerated_Domain_Value_Definition: Siliceous marble (Mesozoic or Paleozoic) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: MZPZq Enumerated_Domain_Value_Definition: Quartzite (Mesozoic or Paleozoic) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: PZm Enumerated_Domain_Value_Definition: Marble (Paleozoic) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: PZmc Enumerated_Domain_Value_Definition: Marble and calc-silicate rocks (Paleozoic) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: QToa Enumerated_Domain_Value_Definition: Old alluvium (Quaternary and/or Tertiary) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Qc Enumerated_Domain_Value_Definition: Colluvium and talus (Quaternary) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Qia Enumerated_Domain_Value_Definition: Intermediate-age alluvium (Quaternary) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: Qya Enumerated_Domain_Value_Definition: Young alluvium (Quaternary) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: TRm Enumerated_Domain_Value_Definition: Monzonite (Middle or Early Triassic) Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: ml Enumerated_Domain_Value_Definition: Modified land Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: mw Enumerated_Domain_Value_Definition: Mine waste Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: q Enumerated_Domain_Value_Definition: Quarry Enumerated_Domain_Value_Definition_Source: author Detailed_Description: Entity_Type: Entity_Type_Label: BM_GEO.AAT Entity_Type_Definition: Arc attribute table of BM_GEO. Entity_Type_Definition_Source: ARC/INFO 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: BM_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: BM_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 BM_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: contact Enumerated_Domain_Value_Definition: Surface trace of a depositional or intrusive contact between mapped units. The trace 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: Concealed trace of a depositional or intrusive contact between mapped units. The trace is obscured by overlying mapped units or by disturbed surfaces such as quarries. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: fault Enumerated_Domain_Value_Definition: Surface trace of a fault contact between mapped units or a fault within a mapped unit. The trace is well located as described in Positional_Accuracy. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: fault scarp, NE-facing Enumerated_Domain_Value_Definition: A northeast-facing scarp interpreted to have formed as the result of fault activity. The bedrock and older alluvial deposits southwest of the scarp are topographically higher than the younger alluvial units to the northeast. The younger alluvial units to the northeast were probably not faulted against the topographically higher units to the southwest, but were deposited against a pre-existing fault scarp. The trace 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: Uncertain (queried) subsurface trace of a fault contact between mapped units or a fault within a mapped unit. The existence of a fault is uncertain because it is nowhere exposed. The trace is obscured by overlying mapped units. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: fault, concealed Enumerated_Domain_Value_Definition: Inferred subsurface trace of a fault contact between mapped units or a fault within a mapped unit. The trace is obscured by overlying mapped units. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: intruded fault(?) Enumerated_Domain_Value_Definition: Uncertain (queried) former trace of a fault that has been intruded by younger (post-fault) igneous dike rocks. The original existence of a fault is uncertain because the fault is nowhere exposed, but a fault is questionably inferred on the basis of local geologic relations. The trace is not well located as described in Positional_Accuracy. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: intruded fault(?), concealed Enumerated_Domain_Value_Definition: Uncertain (queried) subsurface former trace of a fault that has been intruded by younger (post-fault) igneous dike rocks. The original existence of a fault is uncertain because the fault is nowhere exposed, but a fault is questionably inferred on the basis of local geologic relations. The trace is obscured by overlying mapped units. 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 Detailed_Description: Entity_Type: Entity_Type_Label: BM_STR.PAT Entity_Type_Definition: Point attribute table of BM_STR. Entity_Type_Definition_Source: ARC/INFO 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: BM_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: BM_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 BM_STR# Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: PTTYPE Attribute_Definition: The type of oriented feature observed and measured at a point in the database. Attribute_Definition_Source: author Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: bedding Enumerated_Domain_Value_Definition: Measured orientation (strike and dip) of inclined sedimentary layers. Local stratigraphic and structural relations indicate that beds are certainly or probably overturned. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: bedding w top Enumerated_Domain_Value_Definition: Measured orientation (strike and dip) of inclined sedimentary layers. Diagnostic sedimentary features such as crossbedding indicate that bedding is upright. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: fault dip Enumerated_Domain_Value_Definition: Measured inclination (dip) of inclined fault. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: foliation Enumerated_Domain_Value_Definition: Measured orientation (strike and dip) of inclined foliation or cleavage, i.e., an inclined planar structure in a rock that results from metamorphism or deformation. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: min anticline Enumerated_Domain_Value_Definition: Measured bearing and plunge of the axis of a minor (outcrop-scale) anticline Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: min syncline Enumerated_Domain_Value_Definition: Measured bearing and plunge of the axis of a minor (outcrop-scale) syncline Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: ot bedding Enumerated_Domain_Value_Definition: Measured orientation (strike and dip) of inclined, overturned sedimentary layers. Local stratigraphic and structural relations indicate that beds are certainly or probably overturned. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: vert bedding Enumerated_Domain_Value_Definition: Measured orientation (strike and dip) of vertical sedimentary layers. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: vert foliation Enumerated_Domain_Value_Definition: Measured orientation (strike and dip) of vertical foliation or cleavage, i.e., a vertical planar structure in a rock that results from metamorphism or deformation. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: vert vol layer Enumerated_Domain_Value_Definition: Measured orientation (strike and dip) of vertical layering in volcanic rocks. Layering is interpreted as a primary feature related to initial emplacement of the volcanic rocks. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: vol layer Enumerated_Domain_Value_Definition: Measured orientation (strike and dip) of inclined layering in volcanic rocks. Layering is interpreted as a primary feature related to initial emplacement of the volcanic rocks. Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: DIP Attribute_Definition: The inclination of planar or linear 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 Detailed_Description: Entity_Type: Entity_Type_Label: BM_STR.AAT Entity_Type_Definition: Arc attribute table of BM_STR. Entity_Type_Definition_Source: ARC/INFO 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: BM_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: BM_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 BM_STR# Enumerated_Domain_Value_Definition_Source: author Attribute: Attribute_Label: LTYPE Attribute_Definition: Type of geologic feature denoted by a line in the database. Attribute_Definition_Source: author Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: antiform Enumerated_Domain_Value_Definition: Surface trace of the axial surface of an antiform. Rocks folded by the antiform are overturned, so the structural feature is an antiformal syncline rather than an anticline. Enumerated_Domain_Value_Definition_Source: author Enumerated_Domain: Enumerated_Domain_Value: syncline Enumerated_Domain_Value_Definition: Surface trace of the axial surface of a syncline. Enumerated_Domain_Value_Definition_Source: author Detailed_Description: Entity_Type: Entity_Type_Label: BM_BEDS.AAT Entity_Type_Definition: Arc attribute table of BM_BEDS. Entity_Type_Definition_Source: ARC/INFO 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: BM_BEDS# 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: BM_BEDS-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 BM_BEDS# 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: cgl bed Enumerated_Domain_Value_Definition: Trace of a conglomerate bed in unit 3 of the Fairview Valley Formation (Jfv3), mapped by foot traverse using GPS for location control. Enumerated_Domain_Value_Definition_Source: author Detailed_Description: Entity_Type: Entity_Type_Label: BM_SCT.AAT Entity_Type_Definition: Arc attribute table of BM_SCT. Entity_Type_Definition_Source: ARC/INFO 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: BM_SCT# 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: BM_SCT-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 BM_SCT# 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: xsection line Enumerated_Domain_Value_Definition: Line along which a geologic cross section was constructed; not an actual geographic or geologic feature. Enumerated_Domain_Value_Definition_Source: author Detailed_Description: Entity_Type: Entity_Type_Label: BM_ANNO.AAT Entity_Type_Definition: Arc attribute table of BM_ANNO. Entity_Type_Definition_Source: ARC/INFO 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: BM_ANNO# 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: BM_ANNO-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 BM_ANNO# 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: leader Enumerated_Domain_Value_Definition: Line pointing from an annotation to the corresponding map feature; not an actual geographic or geologic feature. 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, 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, 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. 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 BM_STR.PAT of the structure coverage. 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 text on the accompanying map sheet. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Information Services Contact_Address: Address_Type: mailing address Address: Box 25286 Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS (1-888-275-8747) Contact_Facsimile_Telephone: 303-202-4693 Distribution_Liability: The U.S. Geological Survey (USGS) provides these geographic data "as is." The USGS makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. The USGS further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers at the USGS, no warranty, expressed or implied, is made by the USGS regarding the use of these data on any other system, nor does the fact ofdistribution constitute or imply any such warranty. In no event shall the USGS have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by USGS. This digital, geologic map database of the Black Mountain area, 1:12,000 map-scale, and any derivative maps thereof, is not meant to be used or displayed at any scale larger than 1:12,000 (e.g., 1:6,000). Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2006/1347 Fees: None Metadata_Reference_Information: Metadata_Date: 2006 Metadata_Review_Date: 20061030 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Paul Stone Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing Address: 345 Middlefield Rd., MS 973 City: Menlo Park State_or_Province: CA Postal_Code: 94025 Country: USA Contact_Voice_Telephone: 650-329-4931 Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: None Metadata_Use_Constraints: None Metadata_Security_Information: Metadata_Security_Classification_System: None Metadata_Security_Classification: Unclassified Metadata_Security_Handling_Description: None