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.
This USGS product is considered to be in the U.S. public domain. For further information on the USGS Information Policies and Instructions, refer to the Copyrights and Credits section on this web page: http://www.usgs.gov/laws/info_policies.html
