Results: 1 - 2 of 2
Dec 31, 1968
Earth Sciences Report
… flank is covered by sand and gravel. The floor of the valley is also gravel covered but the abbreviated … southern bank is not. The gravel and sand appear to be …
Jul 28, 2009
Map
… the areal extent of sand and gravel deposits with aggregate … the material (ratio of sand to gravel and amount of fines) in the …