Shinarump Member of Chinle Formation

Usage of Geologic Unit Name:
Shinarump Member of Chinle Formation (AZ*,NM*,NV*,UT*)
Shinarump Conglomerate (AZ,NV)
Triassic, Late*
Geologic Province:
Paradox basin*
San Juan basin*
Black Mesa basin*
Plateau sedimentary province*
Great Basin province*
Orogrande basin
Areal Extent:

Type Locality:
Not designated. Probably named for Shinarump Cliffs or Shinarump Mesa, Kane Co., UT (Gilbert, 1875).

Unit Name History:
First used as Shinarump Conglomerate (Gilbert, 1875). Overview; Revised (Gregory, 1917). Assigned as Shinarump Member of the Chinle Formation (Stewart, 1957). Revised (Cooley, 1958). Overview (Poole and Stewart, 1964). Overview; Areal limits (Stewart and others, 1972). Overview (Dubiel, 1987). Revised; Areal limits (Lucas, 1991). Overview (Hintze and Axen, 1995).


Gilbert, G.K., 1875, Report upon the geology of portions of Nevada, Utah, California, and Arizona, Chapter 6, IN Report on the geographical and geological explorations and surveys west of the One hundredth meridian (Wheeler): U.S. Geological and Geographical Survey, Publication of the Wheeler Survey, v. 3, p. 17-187.

Gregory, H.E. and Stone, R.W., 1917, Geology of the Navajo country; a reconnaissance of parts of Arizona, New Mexico, and Utah: U.S. Geological Survey Professional Paper, 93, 161 p.

Stewart, J.H., 1957, Proposed nomenclature of part of the Upper Triassic strata of southeastern Utah: American Association of Petroleum Geologists Bulletin, v. 41, no. 3, p. 441-465.

Cooley, M.E., 1958, The Mesa Redondo member of the Chinle formation, Apache and Navajo Counties, Arizona: Plateau, v. 31, no. 1, p. 7-15.

Poole, F.G. and Stewart, J.H., 1964, Chinle Formation and Glen Canyon Sandstone in northeastern Utah and northwesternColorado, IN Geological Survey research 1964: U.S. Geological Survey Professional Paper, 501-D, p. D30-D39, Also, 1964, Intermountain Association of Petroleum Geologists, 13th Annual Field Conference, Guidebook to the geology and mineral resources of the Uinta basin, Utah's hydrocarbon storehouse, p. 93-104.

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.

Dubiel, R.F., 1987, Sedimentology and new fossil occurrences of the Upper Triassic Chinle Formation, southeastern Utah, IN Campbell, J.A., ed., Geology of Cataract Canyon and vicinity 1987; field symposium: Four Corners Geological Society Field Conference Guidebook, 10th Field Conference, Durango, CO, May 14-17, 1987, p. 99-107.

Lucas, S.G., 1991, Triassic stratigraphy, paleontology and correlation, south-central New Mexico, IN Geology of the Sierra Blanca, Sacramento and Capitan Ranges, New Mexico: New Mexico Geological Society Guidebook, no. 42, p. 243-253.

Hintze, L.F. and Axen, G.J., 1995, Geologic map of the Scarecrow Peak Quadrangle, Washington County, Utah and Lincoln Co, Nevada: U.S. Geological Survey Geologic Quadrangle Map, GQ-1759, 1 sheet, scale 1:24,000.

Hurlbert, John C., 1995, Stratigraphic analysis of the Shinarump Member of the Triassic
Chinle Formation, northern Arizona and southern Utah: Northern Arizona University, masters thesis.

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Last modified: 1/7/2011