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
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Abstract
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Study Area
Publication type | Report |
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Publication Subtype | USGS Numbered Series |
Title | 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 |
Series title | Open-File Report |
Series number | 87-340 |
Chapter | K |
DOI | 10.3133/ofr87340K |
Year Published | 1987 |
Language | English |
Publisher | U.S. Geological Survey |
Description | 1 Plate: 30.54 × 30.72 inches |
Country | United States |
State | Montana, Wyoming |
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