Preliminary chemical and mineralogical analyses of the major volcanic ash beds in the Oligocene Brule Formation, northwestern Nebraska

Open-File Report 94-292
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Abstract

Publication type Report
Publication Subtype USGS Numbered Series
Title Preliminary chemical and mineralogical analyses of the major volcanic ash beds in the Oligocene Brule Formation, northwestern Nebraska
Series title Open-File Report
Series number 94-292
DOI 10.3133/ofr94292
Edition -
Year Published 1994
Language ENGLISH
Publisher U.S. Geological Survey,
Description 36 leaves :ill., map ;28 cm.
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