Gunsight Butte Member of the Entrada Formation

Usage of Geologic Unit Name:
Gunsight Butte Member of Entrada Sandstone of San Rafael Group (UT)

Jurassic, Middle
Geologic Province:
Plateau sedimentary province
Areal Extent:
Type Locality:
Type section: Gunsight Butte on west side of Gunsight Canyon, secs. 15, 16, 21, and 22, T. 43 S., R. 5 E., Kane Co., UT (Thompson and Stokes, 1970).
Unit Name History:
Named as lower member of Entrada Sandstone of San Rafael Group (Thompson and Stokes, l970).


Thompson, A.E. and Stokes, W.L., 1970, Stratigraphy of the San Rafael Group, southwest and south central Utah: Utah Geological and Mineral Survey Bulletin, no. 87, 53 p.

Doelling, H.H., Blackett, R.E., Hamblin, A.H., Powell, J.D., and Pollock, G.L., 2000, Geology of Grand Staircase - Escalante National Monument: In Geology of Utah's Parks and Monuments, Sprinkel, D.A., Chidsey, T.C., and Anderson, P.B., editors, Utah Geological Association Publication 28., p. 189-231.

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Last modified: 1/7/2011