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Golden Valley Formation

Upper member: Yellow-brown micaceous sandstone, sand, silt, and clay; fluvial sediment; as thick as 60 meters (200 feet). Lower member: White or yellow clay, silt, and sand; a weatering zone developed on underlying unit; as thick as 20 meters (65 feet).
State North Dakota
Name Golden Valley Formation
Geologic age Phanerozoic | Cenozoic | Tertiary | Paleocene Eocene
Primary rock type sandstone
Secondary rock type clay or mud
Other rock types silt; sand
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone (Bed)
Unconsolidated > Fine-detrital > Clay (Bed)
Unconsolidated > Fine-detrital > Silt (Bed)
Unconsolidated > Coarse-detrital > Sand (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 Billings - Dunn - Grant - Hettinger - McKenzie - Mercer - Morton - Mountrail - Oliver - Slope - Stark