Red River Formation

Yellowish- to brownish-gray limestone and dolomite; offshore marine sediment; as thick as 215 metres (700 feet).
State North Dakota
Name Red River Formation
Geologic age Ordovician
Lithologic constituents
Sedimentary > Carbonate > Limestone (Bed)offshore marine sediment
Sedimentary > Carbonate > Dolostone (Bed)offshore marine sediment

North Dakota Geological Survey, 2001, Geologic Bedrock Map of North Dakota based on Bluemle, John P., 1983, Geologic and Topographic Bedrock Map of North Dakota, NDGS Miscellaneous Map 25, 1:670,000 scale.

NGMDB product
Counties Grand Forks - Pembina - Walsh