Upper and Middle Tertiary Rock, Undivided

Butte caprock consisting of fluvial or lacustrine sandstone or limestone of Oligocene, Miocene, or Pliocene age; may include the White River Group in some areas or the Killdeer Formation (informal unit) on the Killdeer Mountains; as thick as 120 metres (400 feet).
State North Dakota
Name Upper and Middle Tertiary Rock, Undivided
Geologic age Oligocene, Miocene, or Pliocene
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone (Bed)fluvial or lacustrine sandstone or limestone
Sedimentary > Carbonate > Limestone (Bed)fluvial or lacustrine sandstone or limestone
Stratigraphic units White River Group, Killdeer Formation
References

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 Dunn - Slope