|Generalized stratigraphy of the Petrified Forest National Park and vicinity compiled after:
Martz, J. W. and Parker W. G., 2010, Revised Lithostratigraphy of the Sonsela Member (Chinle Formation, Upper Triassic) in the Southern Part of Petrified Forest National Park, Arizona. PLoS ONE 5(2): e9329. doi:10.1371/journal.pone.0009329.
Woody, D. T., 2006, Revised stratigraphy of the lower Chinle Formation (Upper Triassic) of Petrified Forest National Park, Arizona: in A Century of Research at Petrified Forest National Park: Geology and Paleontology: Parker, W. G., Ash, S. R., and Irmis, R. B., editors, Flagstaff, Arizona: Museum of Northern Arizona Bulletin no. 62, p. 17-45.
With addition stratigraphic unit information from the park area modified from Billingsley, G. H., 1985, General stratigraphy of Petrified Forest National Park: Museum of Northern Arizona Bulletin, v. 54, p. 3-8; and Ash, S. R., 1987, Petrified Forest National Park, Arizona: in Rocky Mountain Section of the Geological Society of America, Beus, S. S., editor, Boulder, Colorado: Geological Society of America Centennial Field Guide v. 2, p. 405-410.
|Click here to begin a geologic image tour of Petrified Forest National Park.
To learn more about Petrified Forest National Park check out the National Park Service website at: http://www.nps.gov/pefo/.
Stratigraphic unit information is modified from the USGS GeoLex (Lexicon of Geology): http://ngmdb.usgs.gov/Geolex/geolex_qs.html.
Information about the Geologic Time Scale is available at: https://gotbooks.miracosta.edu/gonp/coloradoplateau/timescale.htm.