Results: 1 - 4 of 4
Jan 31, 2023
Special Report
… in shallow, polymetallic black shale in NE Alberta. There is no …
Aug 31, 1977
Open File Report
… Cretaceous Clearwater Formation (shale), the Grand Rapids Formation …
Dec 31, 1966
Earth Sciences Report
… and consists of 4 units: a coaly shale; an upper coal seam 4 to 6 … of grey, green and carbonaceous shale and siltstone, with …
Dec 31, 1976
Open File Report
… of exposed sandstone and shale. The climate is continental …