Monday, April 06, 2009

Historical USGS photos

Arizona paleontologist Bill Parker who blogs at Chinleana, noted that the USGS historical photo archive includes 233 Chinle photos, many from Arizona.

The photo at right is from Petrified Forest National Park, Arizona. Petrified tree trunk in the Chinle Formation, 1928.

Image file: /htmllib/batch50/batch50j/batch50z/baa00338.jpg

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