Usage:
Hudspeth Formation (OR)
Geologic age:
Cretaceous
Type section, locality, area and/or origin of name:
Principal reference sections --all in Mitchell quadrangle, Wheeler Co., OR: (1) section A-B, terminal point is about 700 ft northeast of initial point in NE/4 NE/4 SW/4 sec. 13, T. 11 S., R. 21 E., near summit of ridge on north side of canyon; (2) section C-G, terminal point (=G) on north-facing slope in center SE/4 sec. 20, T. 11 S., R. 22 E.; (3) section H-N, terminal point (=N) at top of ridge on dip-slope in NE/4 NE/4 SE/4 sec. 2, T. 12 S., R. 21 E. On cultivated ridge top, in secs. 7 and 8, T. 12 S., R. 22 W., are limited outcrops, not more than 50 ft thick, of Hudspeth (Wilkinson and Oles, 1968).
AAPG geologic province:
Blue Mountains 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 ([ ]).