U.S. Geological Survey
Data Series 244
Version 1.0


Geochemical database for intrusive rocks of
north-central and northeast Nevada

By Edward A. du Bray, Michael W. Ressel, and Calvin G. Barnes

U.S. DEPARTMENT OF THE INTERIOR
DIRK KEMPTHORNE, Secretary

U.S. GEOLOGICAL SURVEY
Mark D. Myers, 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 intrusive rocks in north-central and northeast Nevada to 
understanding the geologic evolution and metallogenesis of this region is widely 
recognized, and these rocks have been extensively studied.  The geochemical 
database presented here represents the first phase of an effort to synthesize 
and interpret the geochemistry of these rocks.  Using the large and synoptic 
body of information in the present database, it is possible to characterize the 
primary geochemical attributes of the north-central and northeast intrusive 
Nevada 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 specific 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 defined 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:  NoNVintrusionGX.xls and NoNVintrusionGX.txt 
DS_244.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 main 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