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  • Usage in publication:
    • Cannonville Member
  • Modifications:
    • Named
  • Dominant lithology:
    • Sandstone
    • Siltstone
  • AAPG geologic province:
    • Paradox basin
Publication:

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.


Summary:

Named as middle member of Entrada Sandstone of San Rafael Group for Cannonville, Garfield Co, UT in Paradox basin. Type section measured in secs 19, 30, and 31, T37S, R2W. Composed of white, friable lenticular sandstone with lenses of red siltstone, gray-purple to green-white clay shale and occasional thin beds of white calcareous sandstone at type. Is 145 ft thick at type; 348 ft thick at Cottonwood Creek (Ts39 to 41S, R1W), and 440 ft thick at Pine Creek (Ts34 and 35S, Rs2 and 3E). Overlies Gunsight Butte Member (new) of Entrada; underlies Escalante Member (first published description) of Entrada. Regionally divisible into 1) banded earthy facies (at Cannonville), 2) gray cross-bedded facies (southwest corner of Kaiparowits Plateau), 3) interbedded sandstone-siltstone facies (south of Dance Hall Rock to Fiftymile Point, Ts40 to 41S, Rs7 to 9E. Age not stated; assigned to the Late Jurassic. Measured sections. Cross sections.

Source: GNU records (USGS DDS-6; Denver GNULEX).


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

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