Results: 1 - 4 of 4
Aug 31, 1983
Open File Report
… framework of Lower Cretaceous coal-bearing rocks in the Grande … framework of Lower Cretaceous coal-bearing rocks in the Grande … Framework of Lower Cretaceous Coal-Bearing Rocks in the Grande …
Jan 23, 2020
Map
… marl/ tufa, metallurgical coal, nickel, peat, phosphate, …
Dec 31, 1968
Earth Sciences Report
… sandstone, shale, and coal which immediately overlies the … of the high clay content but the coal beds are sufficiently …
Dec 31, 1977
Earth Sciences Report