Geology of National Parks, 3D and Photographic Tours
|Usage of Geologic Unit Name:
Southern Rocky Mountain region*
Plateau sedimentary province*
|Unit Name History:
First used (Ford and Breed, 1972). Named as upper formation of Chuar Group; divided into Carbon Butte, Awatubi, Walcott Members (Ford, Breed, 1973). Adopted as Kwagunt Formation of Chuar Group of Grand Canyon Supergroup (Elston, 1979). Age modified (Elston, 1982). Age modified (Elston, 1989b). Overview (Elston, 1993).
Ford, T.D. and Breed, W.J., 1972, The Chuar Group of the Proterozoic, Grand Canyon, Arizona, IN Geologie du Precambrian, Section 1: International Geological Congress, 24th, Report, no. 1, Montreal, 1972, p. 3-10.
Ford, T.D. and Breed, W.J., 1973, Late Precambrian Chuar Group, Grand Canyon, Arizona: Geological Society of America Bulletin, v. 84, no. 4, p. 1243-1260.
Elston, D.P., 1979, Late Precambrian Sixtymile Formation and orogeny at top of the Grand Canyon Supergroup, northern Arizona: U.S. Geological Survey Professional Paper, 1092, 20 p.
Elston, D.P., 1981, Paleomagnetic correlations of Proterozoic rocks [abs.]: U.S. Geological Survey Professional Paper, 1275, p. 139.
Elston, D.P., 1989, Grand Canyon Supergroup, northern Arizona; stratigraphic summary and preliminary paleomagnetic correlations with parts of other North American Proterozoic successions, IN Jenney, J.P., and Reynolds, S.J., editors, Geologic evolution of Arizona: Arizona Geological Society Digest, v. 17, p. 259-272.
Elston, D.P., Link, P.K., Winston, Don and Horodyski, R.J., 1993, Correlations of Middle and Late Proterozoic successions, IN Link, P.K., ed., Middle and Late Proterozoic stratified rocks of the western U.S. Cordillera, Colorado Plateau, and Basin and Range province, Chapter 6, OF Reed, J.C., Jr., and others, editors, Precambrian; conterminous U.S.: Geological Society of America, The Geology of North America, The Decade of North American Geology (DNAG), v. C-2, p. 468-487.
* show accepted USGS usage. Note that data on this page is modified from information available via the
National Geologic Map Database GEOLEX: