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Dolomitic Limestone

The North American craton was periodically flooded by shallow seas that left behind widespread layers of sediment, which formed a veneer of sedimentary rocks like this dolomitic limestone.

Group: Sedimentary
Catalog Number: 116629.0001
Time Period: 300 million years old
Locality: Frenchman Mountain , Nevada

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Smithsonian National Museum of Natural History Department of Mineral Sciences website Credits