Sonsela Member of Chinle Formation

Usage of Geologic Unit Name:
Sonsela Member of Chinle Formation (AZ*,NM*)
Age:
Triassic, Late*
Geologic Province:
Black Mesa basin*
San Juan basin*
Estancia basin*
Areal Extent:
NM(nw)*
AZ(ne)*
Type Locality:
Type section: 3.5 mi north of western Sonsela Butte, east flank of Defiance uplift, Apache Co., AZ (Akers and others, 1958).
Subunits:
Includes Rainbow Forest beds, Jim Camp Wash beds, and Flat Top One beds in Petrified Forest National Park, Arizona (Woody, 2006).
Unit Name History:
Named Sonsela Sandstone Bed of Petrified Forest Member of Chinle Formation (Akers and others, 1958).
Areal limits; Overview (Stewart and others, 1972).
Revised stratigraphic description in Petrified Forest National Park area, Arizona (Woody, 2006)

References

Akers, J. P., Cooley, M. E. and Repenning, C. A., 1958, Moenkopi and Chinle formations of Black Mesa and adjacent areas, IN Anderson, R.Y., and Harshbarger, J.W., editors, Guidebook of the Black Mesa basin [northeastern Arizona]: New Mexico Geological Society Guidebook, no. 9, p. 88-94.

Stewart, J. H., Poole, F. G. and Wilson, R. F., 1972, Stratigraphy and origin of the Chinle Formation and related Upper Triassic strata in the Colorado Plateau region: U.S. Geological Survey Professional Paper, 690, 336 p.

Woody, D. T., 2006, Revised stratigraph 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.
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* show accepted USGS usage.
Note that data on this page contains information that has been partly revised from bibliographic resources available via the National Geologic Map Database GEOLEX:
http://ngmdb.usgs.gov/Geolex/geolex_qs.html.
The URL is: https://gotbooks.miracosta.edu/gonp/coloradoplateau/lexicon/chinle_sonsela.htm
Last modified: 10/20/2010