The Marshall Sandstone is a geologic formation in Michigan. It preserves fossils dating back to the Mississippian period.

Marshall Sandstone
Stratigraphic range: Mississippian
TypeFormation
UnderliesMichigan Formation
OverliesColdwater Shale
Location
RegionMichigan
CountryUnited States
An outcrop of Marshall Sandstone at Sanilac Petroglyphs Historic State Park

References

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