Saginaw Group

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Saginaw Group
Stratigraphic range: Carboniferous
Type Group
Location
Region Michigan
Country United States

The Saginaw Group is a geologic group in Michigan composed of sedimentary rock deposited during the Pennsylvanian Period (circa 323.2 million years ago to 298.9 million years ago. Saginaw group rocks include sandstone, shale, coal, and limestone of fresh water, brackish, and marine origin. Fossils dating back to the Penssylvanian Period (Late or Upper Carboniferous period) can be found in Saginaw Group formations.

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