U.S. Geological Survey
Data Series 155
Version 1.0


Geochemical database for volcanic rocks of the Western Cascades,
Washington, Oregon, and California

By Edward A. du Bray, David A. John, David R. Sherrod, 
Russell C. Evarts, Richard M. Conrey, and Jaroslav Lexa

U.S. DEPARTMENT OF THE INTERIOR
Gale A. Norton, Secretary

U.S. GEOLOGICAL SURVEY
P. Patrick Leahy, Acting Director

For sale by U.S. Geological Survey Information Services
Box 25286, Building 810
Denver Federal Center
Denver, CO 80225-0086
Telephone (303) 202-4200

For more information about the U.S. Geological Survey and its products:
Telephone 1-888-ASK-USGS
URL: http://www.usgs.gov/

Introduction

The importance of the Cascade Range magmatic arc in understanding the geologic evolution of western North America is widely recognized, and these arc rocks have been extensively studied.  The geochemical database presented here represents the first phase of an effort to synthesize and interpret the geochemistry of Western Cascades volcanic arc rocks.  Using the large and synoptic body of information in the present database, it is possible to characterize the primary geochemical attributes of the Western Cascades rocks and begin interpretation of their petrologic, tectonic, and metallogenic significance.


Contact Information

Inquiries about this CD-ROM should be addressed to:

Edward A. du Bray
U.S. Geological Survey
Box 25046, Mail Stop 973
Denver Federal Center
Denver, CO 80225-0046

Telephone: (303) 236-5591
E-mail: edubray@usgs.gov

Disclaimer

This Compact Disc-Read Only Memory (CD-ROM) publication is prepared by an agency of the United States Government.  Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represent that its use would not infringe privately owned rights.  Reference therein to any specic commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.  Although all data published on this CD-ROM are used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data.

Using This CD

The descriptive and interpretive text chapter of this volume is in Portable Document Format (PDF).  Use Acrobat Reader 7.0 (installer for Macintosh and Windows provided on this CD) to access the chapter.

The PDF chapter is accessible as dened by Section 508 of the Rehabilitation Act.

Contents of This CD-ROM

When the CD is opened, the following items appear on the screen:

ACROBAT-Contains installer for Acrobat Reader 7.0.
DATABASE folder-Contains two files:  WCascDB.xls and WCascDB.txt
DS_155.pdf
ReadMe.txt

The PDF file contains text that describes the database and how it was compiled.  The XLS file is the database itself as a Microsoft Excel spreadsheet; the TXT file is the database as a tab-delimited text file.

System Requirements

Adobe Reader 7.0 MS Windows

Intel Pentium-class processor
Windows XP Professional or Home Edition with SP1 or SP2, or Tablet PC Edition; Microsoft Windows 2000 with Service Pack 2 (SP2)
128 MB of RAM
90 MB of available hard-disk space for the full version
800 x 600 monitor resolution


Adobe Reader 7.0 Macintosh

PowerPC G3, G4, G5 processor
Mac OS X v.10.2.8 or 10.3
128 MB of RAM
80 MB of available hard disk space (110 MB required for the full version)
800 x 600 screen resolution