Preliminary geologic map of the San Bernardino 30' x 60' quadrangle, California (includes preliminary GIS database) By Douglas M. Morton1 and Fred K. Miller2 Digital preparation by Pamela M. Cossette2 Kelly R. Bovard1 Readme, version 1.0 Open-File Report 03-293 Online version 1.0 http://pubs.usgs.gov/of/2003/03-293/ 2003 U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY Prepared in cooperation with CALIFORNIA GEOLOGICAL SURVEY A product of the Southern California Areal Mapping Project ____________________ 1 U.S. Geological Survey, Dept. of Earth Sciences University of California, Riverside Riverside, CA 92521 2 U.S. Geological Survey, Western Region Earth Surface Processes Team W904 Riverside Avenue, Spokane, WA 99201-1087 Table of contents DATABASE LIMITATIONS...........................................iii Content................................................iii Spatial Resolution...............................iii INTRODUCTION..................................................™™™™™...1 WHERE TO OBTAIN THE DATABASE....................................1 DATABASE INFORMATION AVAILABLE ON USGS PUBLICATIONS SERVER.........1 Title.................................................™™™™™™™™..2 Authors..............................................™™™™™™™....2 Introduction.........................................™™™™™™™..2 Browse graphic image.............................™™™™™......2 Explanatory files...................................™™™™™™.....2 Database files.......................................™™™™™™™..2 Files for viewing and plotting......................™™™™™..2 HOW TO ACCESS THE DATABASE....................................™...2 Extracting the database files........................™™™™™..2 Converting the ARC/INFO interchange/export files.........3 DATABASE CONTENTS............................................™™™™™3 Content...............................................™™™™™™™™.3 HOW TO OBTAIN A PAPER PLOT OF THE GEOLOGIC MAP...............™™.5 HOW TO ACCESS PORTABLE DOCUMENT FORMAT (.PDF) FILES............5 HOW TO OBTAIN METADATA.....................................™™™...5 LIST OF URLs CITED.........................................™™™™™™....5 U.S. Geological Survey websites....................™™™™....5 Software websites....................................™™™™™™™6 DATABASE LIMITATIONS Content Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. This database, identified as "Preliminary Geologic map of the San Bernardino 30' x 60' quadrangle, California", has been approved for release and publication by the Director of the U.S. Geological Survey. Although this database has been technically reviewed, and is substantially complete, it has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. The USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on the condition that neither the USGS nor the United States Government may be held responsible for any damages resulting from its authorized or unauthorized use. Spatial Resolution Use of this digital geologic map should not violate the spatial resolution of the data. The San Bernardino 30' x 60' database was compiled from many sources including: (1) 1:62,500-scale reconnaisance mapping, (2) mapping from 1:24,000-scale USGS Open-File releases, (3) unpublished 1:24,000-scale mapping (4) Quaternary mapping from interpretation of 1:24,000-scale aerial photography, and (5) detailed 1:9,600-scale and 1:12,000-scale mapping from California Geological Survey Open-File releases. See Sheet 5, figure 3 for detailed sources of mapping. Any enlargement beyond the spatial resolution of the original geologic source data violates the spatial resolution of the data. Similarly, the digital topographic base data are derived from the U.S. Geological Survey, 1:100,000-scale San Bernardino 30' x 60' Digital Line Graphs (DLGs); any enlargement beyond this scale may be misleading. 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 data. No part of the database is intended to serve for site-specific studies. Examination of a plot of the geologic map (Sheet 1) indicates detail in some areas that is far too fine to show well at 1:100,000-scale. This detail is purposely maintained to draw attention to areas where detailed information, compiled from large-scale maps is available. This detail may be viewed by on-screen examination of the digital map coverage or by plotting selected areas at larger scales. However, any enlargement beyond the spatial resolution of the original geologic source data violates the spatial resolution of the data. INTRODUCTION Open-File Report 03-293 is a digital geologic data set that maps and describes the geology of the San Bernardino 30' x 60' quadrangle, San Bernardino, Los Angeles, and Riverside Counties, southern California. The San Bernardino quadrangle database is one of several 30' x 60' quadrangle databases that are being produced by the Southern California Areal Mapping Project (SCAMP). These maps and databases are, in turn, part of the nation-wide digital geologic map coverage being developed by the National Cooperative Geologic Map Program of the U.S. Geological Survey (USGS). The San Bernardino data set consists of a digital geologic map database accompanied by graphics, map plot, and explanatory files. The digital database was created using ARC/INFO, version 8.1, commercial Geographical Information System (GIS) software designed by Environmental Systems Research Institute (ESRI), Redlands, California (http://www.esri.com). The database includes ARC/INFO geospatial coverages and supporting SCAMP symbolsets. PostScript and 508-compliant Portable Document Format files include (1) a geologic map generated from the database, (2) a fault map, (3) a Correlation of Map Units (CMU), (4) a list of map units, (5) a sheet containing three figures, and (6) a pamphlet containing a regional geologic synthesis and a detailed Description of Map Units. Other PDF and ASCII text files contain metadata, and this readme document. WHERE TO OBTAIN THE DATABASE The San Bernardino 30' x 60' quadrangle data set is available on the USGS Publications Server. The data set may be downloaded from the website http://pubs.usgs.gov/of/2003/03-293/ The San Bernardino geologic map and database can also be accessed through links to the Publication Server by any of the following paths: http://scamp.wr.usgs.gov/scamp.html This website provides links to SCAMP-related digital geologic mapping in southern California. http://geopubs.wr.usgs.gov/ This website provides links to USGS Western Region digital geologic maps, including Open-File. The site lists new releases series and number. http://geology.usgs.gov/open-file/ This website provides links to all digital USGS Open-File Reports that contain digital map databases. The site lists the Open-File Reports by number along with the title and author(s) of the report http://geo-nsdi.er.usgs.gov/cgi-bin/publication/open-file/ This website provides links to all digital USGS Open-File Report maps via their metadata files. The site lists the Open-File Reports by number along with the title of the report (see 'How to obtain metadata' below). DATABASE INFORMATION AVAILABLE ON USGS PUBLICATIONS SERVER On the USGS Publications Server website for the San Bernardino geologic map and digital database (http://pubs.usgs.gov/of/2003/03-293/), information is arranged as follows: Title Preliminary Geologic map of the San Bernardino 30' x 60' quadrangle, California Authors Douglas M. Morton (comp.) Fred K. Miller (comp.) Pamela M. Cossette (digital cartography) Kelly R. Bovard (digital cartography) Introduction Browse-graphic image Page-sized, non-navigable image of geologic map (sanbern_map.jpg: JPEG image of geologic map) Explanatory files Readme tabulates contents of database and describes how to access them. Provided on website in ASCII text and Portable Document formats Metadata file contains detailed technical descriptions of structure and content of digital data provided on website as parseable text in ASCII format, and as outline in Hypertext Markup Language format. Also available on the USGS Geologic Division Node of the National Geospatial Data Clearinghouse in these two and other formats (see 'How to obtain metadata' below. Database files Database files are packaged as a tarred and gzipped file (sanbern.tar.gz) that bundles and compresses the following information: Database files: ASCII-formatted ARC/INFO interchange/export format (.e00) file for each ARC/INFO coverage, each base coverage, and symbolset. (See 'Database contents and structure' below) ASCII text files for readme and metadata Files for viewing and plotting Two gzip-compressed PostScript plot-files for generating paper copies of the complate geologic map, and faults Portable Document Format files containing full-sized, navigable graphic images of the geologic Map, the faults, the Correlation of Map Units (CMU), a List of Map Units, and a separate sheet containing index figures HOW TO ACCESS THE DATABASE Extracting the database files The San Bernardino 30' x 60' database files have been bundled and compressed using tar and gzip utilities. Before attempting to unzip the file after downloading, be sure that the .gz extension is present in the file name. Extraction creates the directory sanbern/ that contains the database in ARC/INFO interchange (.e00) files, the readme, metadata, and pamphlet in ASCII text files. The database interchange files include eight ARC/INFO coverages, and supporting symbolsets. Tar and uncompress utilities are included in most UNIX systems, and are available free of charge for all systems at various websites: Gnu Software: http://www.gnu.org/order/ftp.html (UNIX tar and gzip) (This web page links to mirror archive sites for Gnu tar and gzip utilities) Gnu zip: http://www.gzip.org (UNIX gzip) CNET Shareware: http://shareware.cnet.com/ (Macintosh and Windows) (Search for 'tar' or 'gzip' for any Macintosh or Windows operating system.) WinZip: http://www.winzip.com (Windows gzip) USGS Public Domain Software web page: http://edcwww.cr.usgs.gov/doc/edchome/ndcdb/public.html (UNIX and Macintosh) (Provides links to Washington University at St. Louis Gnu archive for UNIX tar and gzip; and to AOL mirror site for Macintosh tar and gzip) Internet Literacy's Common Internet File Formats: http://www.matisse.net/files/formats.html (Macintosh and Windows tar and gzip) (Note: this website has not been maintained since December 1995) Converting the ARC/INFO interchange/export files The ARC interchange/export (.e00) files are converted to ARC coverages using the ARC command IMPORT. 1. Change directories to the sanbern/ directory 2. At the UNIX command prompt, launch ARC/INFO by typing "arc" 3. From the ARC command line type: import