Benton Shale

Benton Shale
Stratigraphic range: Cretaceous
Type Formation
Underlies Niobrara Formation
Overlies Dakota Sandstone
Lithology
Primary Shale
Other Limestone, sandstone, bentonite
Location
Region Montana, Wyoming, North Dakota, South Dakota, Colorado, Nebraska
Country United States
Type section
Named for Fort Benton, Montana

The Benton Shale is a geologic formation in Montana, Wyoming, North Dakota, South Dakota, Colorado and Nebraska.[1] It preserves fossils dating back to the Cretaceous Period.

It is named from Fort Benton, on Upper Missouri River.

See also

References


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