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Upper and Middle Tertiary Rock, Undivided

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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; as thick as 120 meters (400 feet).
State North Dakota
Name Upper and Middle Tertiary Rock, Undivided
Geologic age Phanerozoic | Cenozoic | Tertiary | Miocene Pliocene
Primary rock type sandstone
Secondary rock type limestone
Other rock types
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone (Bed)
Sedimentary > Carbonate > Limestone (Bed)
Map references
Clayton, Lee, 1980, Geologic Map of North Dakota: U. S. Geological Survey, Scale 1:500K.
Unit references
Clayton, Lee, 1980, Geologic Map of North Dakota: U. S. Geological Survey, Scale 1:500K.
Counties Adams - Billings - Bowman - Dunn - Golden Valley - Grant - Hettinger - Morton - Slope - Stark