Cover image for Type sections and stratigraphy of the members of the Blackleaf and Marias River Formations (Cretaceous) of the Sweetgrass arch, Montana : a report of a formal subdivision and age assignments of a classic Cretaceous area
Title:
Type sections and stratigraphy of the members of the Blackleaf and Marias River Formations (Cretaceous) of the Sweetgrass arch, Montana : a report of a formal subdivision and age assignments of a classic Cretaceous area
Author:
Cobban, William Aubrey, 1916-
Publication Information:
Washington : U.S. Govt. Print. Off., 1976.
Physical Description:
iii, 66 pages : illustrations ; 29 cm.
General Note:
Includes index.
Language:
English
Geographic Term:
Format :
Book