Results: 1 - 4 of 4
Apr 30, 2012
Open File Report
… by sulphur-stained, dark grey shale of the Westgate Formation. A … bentonite units in the otherwise shale-dominated Fish Scales … the Belle Fourche Formation is shale dominated with silty lenses, …
Jan 23, 2020
Map
… elements, salt, sand/gravel, shale, silica sand, stone, sulphur, …
Mar 07, 2010
Information Series
… Head Hills, polymetallic black shale in the Birch Mountains, …
Dec 31, 1957
Earth Sciences Report