Results: 1 - 7 of 7
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 …
Jul 13, 2011
Data
… are overlain by thick confining shale units. Most importantly, a …
Jul 13, 2011
Data
… are overlain by thick confining shale units. Most importantly, a …
Jul 13, 2011
Data
… are overlain by thick confining shale units. Most importantly, a …
Jul 13, 2011
Data
… are overlain by thick confining shale units. Most importantly, a …
Jul 13, 2011
Data
… are overlain by thick confining shale units. Most importantly, a …
Dec 31, 1970
Earth Sciences Report