Thermal Maturity of Sedimentary Rocks in Alaska:

Digital Resources

by Mark J. Johnsson1, Kevin R. Evans2, and Heather A. Marshall3

Version 1.0



Charles G. Groat, Director

1Bryn Mawr College, Bryn Mawr, PA 19010
2Christmas Valley, OR 97641
3Newark, CA 94560


This publication consists of the online version of a CD-ROM publication, U.S. Geological Survey Digital Data Series DDS-54. The data for this publication total 358 MB on the CD-ROM. This online version does not include the Acrobat Search index files, the Adobe Acrobat Reader installer, or the ESRI ArcPublisher installer. The installers are available using the links provided below.


This CD-ROM is an updated re-release of three USGS publications on the thermal maturity of sedimentary rocks in Alaska:

Vitrinite reflectance and conodont color alteration index data from Alaska: Data to accompany the thermal-maturity map of Alaska: U.S. Geological Survey Open-File Report 92-409 (1992) version 1.1 (revised 1999)

Generalized thermal maturity map of Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-2494, scale 1:2,500,000 (1996).
[Note; the TIF version of this map is 158 MB. You might consider using the .ai, .pdf, or .ps versions instead.]

Thermal evolution of sedimentary basins in Alaska: U.S. Geological Survey Bulletin 2142, 131 p. (1996).

This release allows access to digital versions of these reports and to the data underlying them. An interface built around Adobe(r) Portable Document Format (PDF) allows easy navigation around these products, whereby they may be easily viewed and printed. In addition to the PDF files, data are provided in Microsoft(r) Excel format to allow manipulations in a spreadsheet program, and in ASCII format for export to more sophisticated database-management or other software. The "Generalized Thermal Maturity Map of Alaska" was produced using Environmental Systems Research Institute's ARC/INFO(r) Geographic Information System (GIS), and this CD-ROM includes the entire workspace needed to export these databases for use with ARC/INFO or other GIS software supporting the ARC/INFO format. In addition, industry-standard shapefiles are included to allow export to other GIS software.

To view PDF files in this report, you will need Adobe Acrobat Reader.

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CLICK HERE to begin using the PDF interface for the report.

To view map coverages in this report, you will need ESRI's ArcExplorer.

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CLICK HERE to see the README file from the CD-ROM.

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Data Files

You can browse the directory structure for this publication and access individual files or, depending upon your software, download entire directories.
Data folder
Map folder
Report folder

To contact the author, email Mark Johnsson (mjohnsson@coastal.ca.gov).

Email technical-support comments to Mike Diggles (mdiggles@usgs.gov).

Availability of this publication

This report is for sale on CD—ROM by:

U.S. Geological Survey
Information Services, National Mapping Division
Box 25046
Denver Federal Center
Denver, CO 80225-0046
Telephone: (888) ASK-USGS

ISBN: 0-607-92298

Current pricing information is available from http://mapping.usgs.gov/esic/prices/.

The URL of this page is http://pubs.usgs.gov/dds/dds-54/
Date created: July 21, 1999
Last modified: July 18, 2005