Williston Basin, North Dakota

Cochise College
Virtual Geology Museum    USA Geology Maps   
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Roger Weller, geology instructor

 
Original map is the Geologic Map of the United States
United States Geological Survey
edited by P.B. King and H.M. Beikman, 1974
original scale was 1: 2,500,000
 

 
Same map, but with culture removed.