Timpoweap Member of Moenkopi Formation
Usage of Geologic Unit Name:
Timpoweap Member of Moenkopi Formation (AZ*,NV,UT*)
Age:
Triassic, Early*
Geologic Province:
Plateau sedimentary province*
Great Basin province*
Areal Extent:
AZ(nc)*
NV
UT(sw)*
Type Locality:
Not designated. Derivation of name not stated (Gregory, 1948).
Reference sections proposed in Washington Co., UT: 1) at Isom Wash-Virgin River intersection, NE/4 SW/4 SE/4 sec. 19, T. 41 S., R. 12 W.; 2) at Isom Wash-UT Hwy 15 intersection, SW/4 SW/4 NE/4 sec. 30, T. 41 S., R. 12 W.; 3) at first wash east of Isom Creek, SW/4 NE/4 NE/4 sec. 30, T. 41 S., R. 12 W.; 4) NE/4 NW/4 NE/4 sec. 29, T. 41 S., R. 12 W. (Nielson and Johnson, 1979).
Unit Name History:
First published use as basal member of Moenkopi Formation (Gregory, 1948). Overview (Gregory, 1950). Reference (Nielson and Johnson, 1979).

References

Gregory, H.E., 1948, Geology and geography of central Kane County, Utah: Geological Society of America Bulletin, v. 59, no. 3, p. 211-247.

Gregory, H.E., 1950, Geology and geography of the Zion [National] Park region, Utah and Arizona: U.S. Geological Survey Professional Paper, 220, 200 p.

Nielson, R.L. and Johnson, J.L., 1979, The Timpoweap Member of the Moenkopi Formation, Timpoweap Canyon, Utah: Utah Geology, v. 6, no. 1, p. 17-27.

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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* 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/moenkopi_timpoweap.htm
Last modified: 1/7/2011