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Spearfish Formation
Geology and Petrology of the Devils Tower, Missouri Buttes, and Barlow Canyon Area, Crook County, Wyoming Don L
Triassic-Jurassic 'Red Beds' of the Rocky Mountain Region": a Discussion
Evaporite Karst in the Black Hills, South Dakota and Wyoming, and the Oil Play in the Williston Basin, North Dakota and Montana
Hydrology of the Black Hills Area, South Dakota
Hydrology of the Black Hills Area, South Dakota
Contemporaneous Alteration of Lower Watrous Clastics and the Sub-Unconformity Alteration Zone in Southeastern Saskatchewan: Petrographic and Geochemical Evidence
Devils Tower National Monument Geologic Resource Evaluation Report
Devils Tower Devils Tower National Monument
Devils Tower (Wyoming, USA): a Lava Coulée Emplaced Into a Maar-Diatreme Volcano?
Middle Jurassic of North Central Montana and Adjacent Areas of Canada
Ground-Water Resources in the Black Hills Area, South Dakota
Lexicon of Bedrock Stratigraphic Names of North Dakota Joanne Van Ornum Groenewold University of North Dakota
Presented On
Stratigraphy and Petroleum Production Potential of the Spearfish Formation in North Central North Dakota Nnaemeka C
Geologic Map of South Dakota Has Been a O R 18 44 Ch
Tei-809 Geology of the Williston Basin, North Dakota, Montana, and South
The Spearfish Formation – Another Unconventional Target Julie A
Hydrology, Hazards, and Geomorphic Development of Gypsum Karst in the Northern Black Hills, South Dakota and Wyoming
Top View
Geology and Oil and Gas Prospects of Central and Eastern Montana
A Reconnaissance of Permo-Triassic Redbeds of Eastern Wyoming and Southwestern South Dakota
Survey for Special Plant Species of Concern in Devils Tower National Monument
Isotopic Data (Sr, S, and 0) from Anhydrites in the Northern Williston
The Spearfish Formation in the Williston Basin of Western North