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Dec 31, 1968
Earth Sciences Report
… northern flank is covered by sand and gravel. The floor of the … bank is not. The gravel and sand appear to be extensive and … finished in this gravel and sand range from less than 10 to …
Oct 08, 2015
Data
Dec 31, 1968
Earth Sciences Report
… are beds of marl, gravel, sand, and conglomerate. The …