Results: 1 - 5 of 5
Oct 16, 2014
Open File Report
… of the lower Clearwater shale unit, that overlay the … where the lower Clearwater shale unit is thin (<5 m thick) or … study area, the lower Clearwater shale was found to be between 20 …
Dec 31, 1966
Bulletin
… sandstone and dark silty shale, correlative with quartzose sandstone and shale in the lower part of the … siltstone, and varicoloured shale, with thin tuff and bentonite …
Apr 20, 2020
Report
… anhydrite, carbonate, and shale. Understanding the degree of …
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 …