Results: 1 - 4 of 4
Feb 28, 1975
Economic Geology Report
Dec 31, 1968
Earth Sciences Report
… a relatively impermeable marine shale, completely underlies the … beds of argillaceous sandstone, shale, and coal which immediately …
Dec 31, 1968
Bulletin
… above and below he 'mauve shale' and Kneehills Member of the …