U.S. DEPARTMENT
OF THE INTERIOR
U.S. GEOLOGICAL
SURVEY
Open-File Report 01-462 2001 This report is preliminary and has not been reviewed for conformity with the U.S. Geological Survey editorial standards or with the North American Stratigraphic Code.Any use of trade names is for descriptive purposes only and does not imply endorsement by the U.S. Government Click HERE to view Open-File Report 01-462
______________________________________________________ 1U.S. Geological Survey, MS 916, Box 25046, Denver Federal Center, Denver, Colorado 80225 2Institute for Environmental Geological Science, 1500 Illinois St., Golden, Colorado
|