U.S. Geological Survey Open-File Report 2006-1265 Preliminary Surficial Geology of the Dove Spring Off-Highway Vehicle Open Area, Mojave Desert, California By David M. Miller and Lee Amoroso 2007 Introduction The U.S. Geological Survey Open-File Report 2006-1265 is a digital geologic data set that maps and describes the surficial geology of the Dove Spring Open Area, Mojave Desert, California. This document describes the types and contents of files comprising the database. Information on how to extract and plot the map also is provided. Digital Open-File Contents This Open-File Report consists of three digital packages. The first is the Documentation Package, which consists of this file in text format, a Portable Document Format (PDF) file of the pamphlet (which includes a more detailed description of map units), FGDC metadata for the Report in text format, and possibly a revision list. The second is a Digital Database Package, which contains the geologic map database itself and associated metadata. For those interested in the geology of the map area that use an ARC/INFO-compatible (Environmental Systems Research Institute, www.esri.com) Geographic Information System (GIS), we have provided the map as a personal geodatabase and the associated style file, and as shapefiles. The third package is the Plot file Package, which contains an on-screen viewable or printable image of the geologic map created from the database in Adobe Acrobat PDF (http://www.adobe.com/) format (see Plot file Package sections below). Those who have computer capability can access the plot file packages (see the section Obtaining the Digital Database and Plot file Packages). Documentation Package The Documentation Package includes descriptions of this report, including instructions on how to get the report, data formats and content. It consists of 3 parts, a "Read Me" text description (this file), FGDC compliant metadata describing the report, and a revision list, if any, that lists any revisions made to this report. This documentation package contains the following: ReadMe_of06-1265.txt a text file of the report text (this file) of06-1265_pamphlet.pdf a PDF file of the pamphlet to accompany the map including geologic interpretation, figures, and a description of map units of06-1265_met1.txt a text file of FGDC compliant metadata for the geodatabase arcs of06-1265_met2.txt a text file of FGDC compliant metadata for the geodatabase polygons Digital Database Package The database package includes geologic map database files for the map area. The digital maps are in the form of ESRI's ArcGIS. The ArcGIS personal geodatabase, shapefiles, and style file included in the database are described below: geodatabase Description ---------------- --------------- of06-1265.mdb Geologic units, faults, and contacts shapefiles Description ---------------- --------------- of06-1265_shp.zip Shapefiles of the Geologic units, faults,and contacts style file Description ---------------- ------------------------------- of06-1265.style Colors and patterns for LTYPES and PTYPES The database package also includes the text files of FGDC compliant metadata for this report. Plot file Package For those interested in the geology of the map area that do not use an ARC/INFO compatible GIS system, we have included a separate printable map created from the database. Because this release is primarily a digital database, the PDF plot derived from it has not been edited to conform to U.S. Geological Survey cartographic standards. The map image is 36 by 48 inches and requires a large plotter to produce paper copies at the intended scale. The technical context of the map has undergone scientific review. The file of06-1265_map.pdf is a PDF format file containing an image of the geologic map, at a scale of 1:24,000. The size of the map is 36 by 48 inches when printed at the map scale. Zip files The digital database packages described above are stored in a zip file. A zip, or winzip, compression utility is required to extract the database from the zip file. This utility operates under UNIX, Windows, and Macintosh operating systems, and can be obtained free of charge over the Internet from Internet Literacy's Common Internet File Formats Web page (http://www.matisse.net/files/formats.html). The zip algorithm may also be uncompressed with decompression programs, available free of charge over the Internet via links from the USGS Public Domain Software page (http://edc.usgs.gov/geodata/public.html). Obtaining the Digital Database and Plot file Packages To obtain zip files of database or plot file packages from the USGS web pages: The U.S. Geological Survey web site is located at: http://www.usgs.gov The direct URL to the web page for this report is: http://pubs.usgs.gov/of/2006/1265/