Entry_ID: (required) Entry_Title: Digital Geologic Map of the Butler Peak 7.5' Quadrangle, San Bernardino County, California Group: Data_Set_Citation Originator(s): Fred K. Miller; Jonathan C. Matti; Howard J. Brown; Pamela M. Cossette (digital compiler) Title: Digital Geologic Map of the Butler Peak 7.5' Quadrangle, San Bernardino County, California Publication: U.S. Geological Survey Open-File Report Publication_Date: 2000301 Publication_Place: Menlo Park, California Publisher: U.S. Geological Survey Edition: Version 1.0 Data_Presentation_Form: vector digital data URL: End_Group Keyword: gelogic map Keyword: geology Keyword: bedrock geology Keyword: surficial geology Group: Temporal_Coverage Start_date: 2000 Stop_date: 2000 End_Group Data_Set_Progress: Complete Group: Spatial_Coverage Southernmost_Latitude: 34.24998409 Northernmost_Latitude: 34.37500202 Westernmost_Longitude: -117.1250927 Easternmost_Longitude: -116.9999073 End_Group Location: California Location: San Bernardino County Location: Butler Peak 7.5' quadrangle Group: Data_Resolution Latitude_Resolution: 0.0000001 Longitude_Resolution: 0.0000001 End_Group Access_Constraints: None Use_Constraints: The Butler Peak 7.5' geologic-map database should be used to evaluate and understand the geologic character of the Butler Peak quadrangle as a whole. The data should not be used for purposes of site-specific land-use planning or site-specific geologic evaluations. The database is sufficiently detailed to identify and characterize many actual and potential geologic hazards represented by faults and landslides. However, it is not sufficiently detailed for site-specific determinations or evaluations of those features. Faults shown do not take the place of fault-rupture hazard zones designated by the California State Geologist (see Hart, 1988). Use of the Butler Peak geologic-map database should not violate the spatial resolution of the data. Although the digital form of the data removes the constraint imposed by the scale of any derivative maps, the detail and accuracy issues inherent in map scale limitations are also present in the digital data. The fact that this database was edited at a scale of 1:24,000 means that higher-resolution data generally are 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 beyond the intended resolution of the database. Similarly, although higher-resolution data is incorporated at a few places, the resolution of the combined output will be limited by the lower-resolution data. This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Hart, E. W., 1988, Fault-rupture zones in California; Alquist-Priolo Special Studies Zones Act of 1972 with index to special studies zones maps: California Division of Mines and Geology Special Publication 42 Originating_Center: (required) Group: Data_Center Data_Center_Name: U.S. Geological Survey Information Services Group: Data_Center_Contact Last_name: U.S. Geological Survey Information Services First_name: N/A Email: (distributor email) Phone: (303) 202-4200 Group: Address Open-File Reports, Box 25286 Denver, CO 80225 USA End_Group End_Group End_Group Storage_Medium: SunOS, 5.6, sun4u UNIX ARC/INFO version 7.2.1 Group: Reference Citation_Information: Originator: Fred K. Miller Originator: Jonathan C. Matti Originator: Howard J. Brown Originator: Robert E. Powell Publication_Date: 1998 Title: Geologic map of the Fawnskin 7.5' quadrangle, San Bernardino County, California, version 1.0 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: USGS OFR 98-579 Publication_Information: Publication_Place: Menlo Park, California Publisher: U.S. Geological Survey Online_Linkage: End_Group Group: Summary The data set for the Butler Peak quadrangle has been prepared by the Southern California Areal Mapping Project (SCAMP), a cooperative project sponsored jointly by the U.S. Geological Survey and the California Division of Mines and Geology, as part of an ongoing effort to utilize a Geographical Information System (GIS) format to create a regional digital geologic database for southern California. This regional database is being developed as a contribution to the National Geologic Map Data Base of the National Cooperative Geologic Mapping Program of the USGS. Development of the dataset for the Butler Peak quadrangle has also been supported by the U.S. Forest Service, San Bernardino National Forest. The digital geologic map database for the Butler Peak quadrangle has been created as a general-purpose data set that is applicable to other land-related investigations in the earth and biological sciences. For example, the U.S. Forest Service, San Bernardino National Forest, is using the database as part of a study of an endangered plant species that shows preference for particular rock type environments. The Butler Peak database is not suitable for site-specific geologic evaluations at scales greater than 1:24,000 (1 in = 2,000 ft). This data set maps and describes the geology of the Butler Peak 7.5' quadrangle, San Bernardino County, California. Created using Environmental Systems Research Institute's ARC/INFO software, the data base consists of the following items: (1) a map coverage showing geologic contacts and units,(2) a scanned topographic base at a scale of 1:24,000, and (3) attribute tables for geologic units (polygons), contacts (arcs), and site-specific data (points). In addition, the data set includes the following graphic and text products: (1) A PostScript graphic plot-file containing the geologic map on a 1:24,000 topographic base accompanied by a Description of Map Units (DMU), a Correlation of Map Units (CMU), and a key to point and line symbols; (2) PDF files of the DMU and CMU, and of this Readme, and (3) this metadata file. The geologic map data base contains original U.S. Geological Survey data generated by detailed field observation and by interpretation of aerial photographs. The map was created by transferring lines from the aerial photographs to a 1:24,000 mylar orthophoto-quadrangle and then to a base-stable topographic map. This map was then scribed, and a .007 mil, right-reading, black line clear film made by contact photographic processes.The black line was scanned and auto-vectorized by Optronics Specialty Company, Northridge, CA. The non-attributed scan was imported into ARC/INFO, where the database was built. Within the database, geologic contacts are represented as lines (arcs), geologic units as polygons, and site-specific data as points. Polygon, arc, and point attribute tables (.pat, .aat, and .pat, respectively) uniquely identify each geologic datum and link it to other tables (.rel) that provide more detailed geologic information. End_Group Group: Related_URL URL_Type: URL: Group: Description Originator: Fred K. Miller Originator: Jonathan C. Matti Originator: Howard J. Brown Originator: Robert E. Powell Publication_Date: 1998 Title: Geologic map of the Fawnskin 7.5' quadrangle, San Bernardino County, California, version 1.0 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: USGS OFR 98-579 Publication_Information: Publication_Place: Menlo Park, California Publisher: U.S. Geological Survey Online_Linkage: End_Group End_Group Group: DIF_Author Last_name: K.Miller First_name: Fred Email: fmiller@usgs.gov Phone: (509) 368-3120 Group: Address 904 West Riverside Avenue, Rm. 202 Spokane, WA 99201-1087 USA End_Group End_Group DIF_Revision_Date: 20000403 Science_Review_Date: