Geologic and Geophysical Maps of the El Casco 7.5Õ Quadrangle, Riverside
County, California, with Accompanying Geologic-Map Database

By Jonathan C. Matti, Douglas M. Morton, and Victoria E. Langenheim

U.S. Geological Survey Open-File Report 2010-1274

2015


INTRODUCTION

  This publication includes ESRI (Environmental Systems Research Institute,
  http://www.esri.com) File Geodatabase feature classes and non-spatial
  tables;  Portable Document Format (PDF) files of the geologic sheet, the
  gravity sheet, and the observation data sheet;  a PDF file of an 
  accompanying geologic pamphlet;  a PDF file of a userguide for accessing 
  and querying the GIS data;  an FGDC-compliant metadata file for the 
  database;  an ESRI map document file (.mxd) for viewing and querying the 
  database;  an ESRI style file (.style) of geologic feature symbols;  a 
  readme file for the geophysics data;  and this readme file.


FILES IN THE OPEN-FILE REPORT

  * ofr20101274_readme.txt -- text; this file
  * ofr20101274_readme_geophysics_data.txt -- text; readme file for the
      geophysics data for the El Casco 7.5' quadrangle
  * ofr20101274_pamphlet.pdf -- Adobe Acrobat Document; description of the
      geology and the geologic history of the El Casco 7.5' quadrangle
  * ofr20101274_metadata.txt -- ASCII text file of the metadata
  * ofr20101274_data.zip -- Zip archive; contains the database for the El 
      Casco 7.5' quadrangle
  * ofr20101274_database_userguide.pdf -- Adobe Acrobat Document; a guide for
      using the database

 Geologic data and ESRI .mxd (to view and query data) 
  * ElCasco_geology.gdb -- ESRI ArcGIS 9.3.1 file geodatabase 
  * El_Casco_geology.mxd -- ESRI ArcMap 9.3.1 map document

 Basemap for reference purposes only    
  * ec_topo.tif -- TIFF; topographic map for El Casco 7.5' quadrangle

 Symbology for the El Casco 7.5' geologic map
  * elcas_geo.style -- ESRI style file; polygon fills, line and point symbols

 Geophysics data (see ofr20101274_readme_geophysics_data.txt for more details)
  * dma-edit.dat.txt
  * iso-max-big-in.axyz
  * iso-max-small-in.axyz
  * iso_utm.e00  
  * new-ucr-edit.dat.txt
  * old-edited.dat.txt
  * usgs-iso.dat.txt

 Plot files
  * ofr20101274_sheet1.pdf -- Adobe Acrobat Document;
      plot file of the geologic map of the El Casco 7.5' quadrangle
  * ofr20101274_sheet2.pdf -- Adobe Acrobat Document;
      plot file of observation data for the El Casco 7.5' quadrangle
  * ofr20101274_sheet3.pdf -- Adobe Acrobat Document;
      plot file of the gravity map


HOW TO OBTAIN THE DIGITAL FILES

  To search and download or order USGS publications (both printed and web) go
  to http://pubs.er.usgs.gov. Alternatively, users may go directly to this
  publication at http://dx.doi.org/10.3133/ofr20101274 and follow the
  download instructions.
  


PORTABLE DOCUMENT FORMAT (PDF) FILES

  The PDF files are accessed using Adobe Acrobat Reader
  software, available free from the Adobe website
  http://www.adobe.com. Follow instructions at the website
  to download and install the software.  Acrobat Reader
  contains an on-line manual and tutorial.

MISCELLANEOUS

  The ArcMap document El_Casco_geology.mxd is ready to view and
  query the geology database with ArcMap.

  System Requirements: See ESRI.com (ArcGIS) and Adobe.com (Acrobat Reader)
  for the minimum computer specifications for running the respective software
  programs; ESRI ArcGIS 9.3 or later version or other GIS software compatible
  with viewing and (or) converting ESRI feature classes.