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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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Additional Publication Details

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
Edition:
-
Year Published:
1994
Language:
ENGLISH
Publisher:
U.S. Geological Survey,
Description:
36 leaves :ill., map ;28 cm.