Results: 1 - 5 of 5
Jan 23, 2020
Data
… are naturally occurring metallic and industrial minerals, diamonds, … coal, peat, humalite, and sand and gravel, as well as minerals that …
Jan 23, 2020
Data
… Industrial Mineral Deposits and Occurrences (AMDO) digital … marl, tufa, phosphate, silica sand, pumicite, sulphur, fly ash, humalite, and sand and gravel. This dataset is part of a …
Dec 31, 1964
Earth Sciences Report
… hummocky disintegration moraine and end moraine. Glaciofluvial deposits of sand and gravel, in the form of outwash …
Dec 31, 1974
Earth Sciences Report
… between longitudes 110 & #176; and 112 degrees west and latitudes 52 degrees and 53 degrees north. It covers …
Dec 31, 1974
Earth Sciences Report
… between longitudes 110 degrees and 112 degrees west and latitudes 52 degrees and 53 degrees north. It covers …