Results: 1 - 5 of 5
Dec 31, 1988
Bulletin
… with a thick section of Ireton shale and lowest in regions where … present without overlying Ireton shale. The synthesis of this vast …
Dec 31, 1982
Open File Report
… Barite, Bentonite, Clay and Shale, Coal, Copper, Coquina, …
Dec 31, 1957
Bulletin
… the lower part of the Colorado shale of Alberta and Saskatchewan, and in the Mowry shale of the Black Hills area of …
Jun 30, 1980
Open File Report
Dec 31, 1961
Earth Sciences Report