Search Results - "Bentonite Powder River Basin (Wyo. and Mont.)"

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Thickness of upper Cretaceous rocks from the base of the Ardmore bentonite to the base of the Clay Spur bentonite (top of the lower Cretaceous rocks), Powder River Basin, Wyoming and Montana /

Thickness of upper Cretaceous rocks from the base of the Ardmore bentonite to the base of the Clay Spur bentonite (top of the lower Cretaceous rocks), Powder River Basin, Wyoming a...

[Reston, Va.?] : The Survey, 1987

Subjects: “...Bentonite Powder River Basin (Wyo. and Mont.) Maps....”

Government Document Map