Thickness of upper Cretaceous rocks from the base of the Niobrara Formation to the base of the clay spur bentonite (top of lower Cretaceous rocks), Powder River Basin, Wyoming and Montana [microform] Yale Public content

Author:
Publisher:
The Survey
Subject:
Geology, Stratigraphic
Petrology
Rocks, Sedimentary
Spatial Coverage:
Powder River Basin (Wyo. and Mont.)
Temporal Coverage:
Cretaceous
Language:
English
Year:
1987
Date Issued:
2002-06-01T04:00:00Z
Date Modified:
2002-06-01T04:00:00Z
Library Catalog Record:
https://search.library.yale.edu/catalog/5078210
Digital Collections Record:
No Digital Collections record

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