Stratigraphy of the Pierre Shale, Valley City and Pembina Mountain areas, North Dakota /

"Five lithologic subdivisions of the Pierre Shale in eastern North Dakota correlated with equivalent rocks in central South Dakota, eastern Wyoming, central Montana, and southern Manitoba."

Bibliographic Details

Main Author:	Gill, James R. (James Rogers), 1922-1972
Other Authors:	Cobban, William A., 1916-2015
Format:	Government Document Book
Language:	English
Published:	Washington : U.S. Govt. Print. Off, 1965.
Series:	Professional paper (Geological Survey (U.S.)) ; 392-A. Studies of the Pierre Shale in the northern Great Plains.
Subjects:	Geology, Stratigraphic > Cretaceous. Geology > North Dakota. Shale > North Dakota.