Results: 1 - 2 of 2
Dec 31, 1974
Economic Geology Report
… shards and the mineralogy of the sand and silt fractions suggest … can be related to the amount of sand-and silt-sized volcanic glass …
Jul 28, 2009
Map
… map shows the areal extent of sand and gravel deposits with … of the material (ratio of sand to gravel and amount of fines) …