Usage:
Howell Limestone (UT*)
Howell Formation (UT)
Subunits:
Millard Member (UT*).
Geologic age:
Middle Cambrian*
Type section, locality, area and/or origin of name:
Type locality: slopes of Howell Peak, on west side of House Range, about 5 mi west of Antelope Springs [in T. 17 S., R. 14 W., Marjum Pass 7.5-min quadrangle, Millard Co.], western UT (Walcott, 1908).
Type locality (emended): about 5 mi south of Walcott's type locality in spurs between tributary valleys on north side of Marjum Canyon, House Range, [Notch Peak 7.5-min quadrangle, Millard Co., western UT] (Deiss, 1938).
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 ([ ]).