Geologic map showing thickness of the upper Cretaceous Pierre Shale in the north half of the Powder River Basin, southeastern Montana and northeastern Wyoming - Yale University Library GeoBlacklight

Geologic map showing thickness of the upper Cretaceous Pierre Shale in the north half of the Powder River Basin, southeastern Montana and northeastern Wyoming

Author:: Geological Survey (U.S.)
Publisher:: The Survey ; For sale by Map Distribution
Subject:: Geology
Geology, Stratigraphic
Geology, Structural
Spatial Coverage:: Powder River Basin (Wyo. and Mont.)
Temporal Coverage:: Cretaceous.
Language:: English
Year:: 1993
Date Issued:: 2002-06-01T04:00:00Z
Date Modified:: 2002-06-01T04:00:00Z
Library Catalog Record:: https://search.library.yale.edu/catalog/5127065
Digital Collections Record:: No Digital Collections record

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