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Anne Arundel County

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Click on a tile to display information about the associated rock types or formations.
Baltimore Gabbro Complex (Early Paleozoic- Late Precambrian ?)
Relay Quartz Diorite (Early Paleozoic- Late Precambrian ?)
Monmouth Formation (Cretaceous)
Matawan Formation (Cretaceous)
Magothy Formation (Cretaceous)
Potomac Group (Cretaceous)
Calvert Formation (Miocene)
Nanjemoy Formation (Eocene)
Aquia Formation (Paleocene)
Upland Deposits -Western Shore (Quaternary)
Lowland Deposits (Quaternary)