Belle Fourche-Skull Creek, Undivided

Belle Fourche Formation (as described in Kb). Mowry Formation: medium- to dark-gray shale; marine offshore sediment; as thick as 55 metres (180 feet). Newcastle Formation: light-gray, fine- to medium-grained sandstone; marine shoreline and offshore sediment; as thick as 45 metres (150 feet). Skull Creek Formation: medium-gray to dark-gray shale; marine offshore sediment; as thick as 40 metres (140 feet).
State North Dakota
Name Belle Fourche-Skull Creek, Undivided
Geologic age Lower to Upper Cretaceous
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale (Bed)marine offshore sediment
Sedimentary > Clastic > Sandstone (Bed)fine- to medium-grained sandstone; marine shoreline and offshore sediment
Stratigraphic units Mowry Formation, Newcastle 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 Cass - Ransom - Richland - Sargent - Traill