Petrified Forest National Park
Agate Bridge is a large fossil log that spans a small canyon in cross-bedded sandstone of Triassic age. The mesa capping sandstone layer that the petrified log is eroding from is called the Flattops One bed of the upper Sonsela Member within the Chinle Formation (Woody, 2006).
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The URL is: https://gotbooks.miracosta.edu/gonp/pefo/html2/pf1553.htm
Last modified: 1/10/2011