U.S. Geological Survey

Major- and Trace-Element Geochemistry; Lead, Strontium, and Neodymium Isotopic Compositions; and Petrography of Late Cenozoic Basaltic Rocks from West Central Colorado

By D.M. Unruh, J.R. Budahn, D.F. Siems, and F.M. Byers, Jr.

U.S. Geological Survey Open-File Report 01-0477

Version 1.0

separator bar

Part or all of this report is presented in Portable Document Format. The latest version of Adobe Acrobat Reader or similar software is required to view it. If you wish to download the latest version of Acrobat Reader free of charge, click here.

Report PDF file (3.2 MB)

(This version of the report is accessible as defined in Section 508.)

separator bar

USA.gov logo  Take Pride in America button