Usage:
Escalante Desert Formation of Needles Range Group (UT*)
Subunits:
(alphabetical): Beers Spring Member (UT*), Lamerdorf Tuff Member (UT*), Marsden Tuff Member (UT*).
Geologic age:
Tertiary*
Oligocene*
Type section, locality, area and/or origin of name:
Type section: northeast flank of hill 6535, either in sec. 16[?] or in sec. 6[?], T. 32 S., R. 14 W., west margin of Escalante Desert, southern Wah Wah Mountains, Lund quadrangle, Iron Co., UT (Grant, 1978).
Principal reference section: in secs. 21, 22, 27, 28, T. 31 S., R. 15 W., Mountain Spring quadrangle, Iron Co., UT. (Best and Grant, 1987).
Reference sections: in secs. 1, 2, 12, T. 29 S., R. 19 W., and in secs. 17, 18, T. 29 S., R. 18 W. (Best and Grant, 1987).
[Discrepancy in GNU records (USGS DDS-6) concerning whether type section occurs in sec. 16 or sec. 6. --unresolved.]
AAPG geologic province:
Great Basin province*
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 ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).