Utica Shale
The Utica Shale is a stratigraphic unit of Upper Ordovician age in the Appalachian Basin. It underlies much of the northeastern United States and adjacent parts of Canada.
The Utica Shale is a stratigraphic unit of Upper Ordovician age in the Appalachian Basin. It underlies much of the northeastern United States and adjacent parts of Canada.
The Utica Shale is a stratigraphic unit of Upper Ordovician age in the Appalachian Basin. It underlies much of the northeastern United States and adjacent parts of Canada.
Source: Wikipedia "Utica Shale" · CC BY-SA 4.0
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