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Stratigraphic significance and petrology of phosphate nodules at base of Niobrara Formation, east flank of Black Hills, South Dakota /

Bibliographic Details
Main Authors: Tourtelot, Harry Allison, 1918-, Cobban, William A., 1916-2015 (Author)
Format: Government Document Book
Language:English
Published: Washington : U.S. Govt. Print. Off, 1968.
Series:Shorter contributions to general geology.
Geological Survey professional paper ; 594-L.
Subjects:
Geology, Stratigraphic > Cretaceous.
Phosphates > Black Hills (S.D. and Wyo.)
Phosphates > South Dakota.
Geology > Black Hills (S.D. and Wyo.)
Geology > South Dakota.
Niobrara Formation.
Description
Physical Description:iii, 22 pages, 5 unnumbered pages : illustrations ; 29 cm.
Bibliography:Bibliography: pages 18-20.