Results: 1 - 3 of 3
Jan 31, 2023
Special Report
… in shallow, polymetallic black shale in NE Alberta. There is no …
Nov 18, 2008
Data
… coal, shaly-coal and coaly-shale), formation tops and …
Dec 31, 1968
Earth Sciences Report
… a relatively impermeable marine shale, completely underlies the … beds of argillaceous sandstone, shale, and coal which immediately …