Results: 1 - 5 of 5
Jan 23, 2020
Data
… marl, tufa, phosphate, silica sand, pumicite, sulphur, fly ash, humalite, and sand and gravel. This dataset is …
Jan 23, 2020
Map
… rare earth elements, salt, sand/gravel, shale, silica sand, stone, sulphur, titanium, …
Dec 31, 1982
Open File Report
… Phosphate Rock, Potash, Salt, Sand and Gravel, … Sandstone-Siltstone, Silica Sand, Silver, Sodium Sulphate, …
Dec 31, 1968
Earth Sciences Report
… are beds of marl, gravel, sand, and conglomerate. The …
Dec 31, 1974
Earth Sciences Report
… tills, lacustrine materials and sand dunes which yield little or no …