Golden Valley Formation

Upper member: yellowish-brown micaceous sandstone, sand, silt, and clay; fluvial sediment; as thick as 60 metres (200 feet). Lower member: white or yellow clay, silt, and sand; a weathering zone developed on underlying unit; as thick as 20 metres (65 feet).
State North Dakota
Name Golden Valley Formation
Geologic age Eocene and Paleocene
Lithologic constituents
Sedimentary > Clastic > Mudstone > Claystone (Bed)poorly consolidated
Sedimentary > Clastic > Sandstone (Bed)micaceous sandstone, poorly consolidated
Sedimentary > Clastic > Siltstone (Bed)poorly consolidated
Comments Map unit descriptions mix unconsolidated and sedimentary terms; using sedimentary terms with poorly consolidated according to other sources.

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.

Clausen, E. N., and Kihm, A. J., eds., 1986, Tertiary and Upper Cretaceous of south-central and western North Dakota Field Trip Guidebook, North Dakota Geological Society.

NGMDB product
Counties Billings - Dunn - Hettinger - McKenzie - Mercer - Morton - Mountrail - Oliver - Slope - Stark