Results: 1 - 4 of 4
Nov 28, 2011
Open File Report
… Exshaw Formation black shale. Based on geochemical and …
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 …