Petrified Forest National Park, Arizona; Clays capped by conglomeratic sandstone, the logs occur in the sandstone. 1905.
Dates
Date Taken
1905
Summary
Petrified Forest National Park, Arizona; Clays capped by conglomeratic sandstone, the logs occur in the sandstone. 1905. Plate 8-A in U.S. Geological Survey. Bulletin 435. 1910.
Summary
Petrified Forest National Park, Arizona; Clays capped by conglomeratic sandstone, the logs occur in the sandstone. 1905. Plate 8-A in U.S. Geological Survey. Bulletin 435. 1910.
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