Usage:
Flournoy Formation of Umpqua Group (OR)
Subunits:
(alphabetical): Camas Valley Member (OR), Lorane Siltstone Member (OR), Sacchi Beach Member (OR), White Tail Ridge Member (OR).
Geologic age:
Tertiary
Eocene, middle
Type section, locality, area and/or origin of name:
Type section: exposures along upper Lookingglass Creek in Flournoy Valley and between north edge of Lookingglass Valley and Tyee escarpment, Camas Valley quadrangle, Douglas Co., OR. Origin of name not stated by author, but probably named from Flournoy Valley (Baldwin, 1974).
Reference sections designated as a nearly continuous exposure along Middle Fork of Coquille River, from a point near east line of sec. 14, T. 30 S., R. 10 W., westward to mouth of Rock Creek near Remote; also a well exposed section along a second Rock Creek, which lies south of Bone Mountain (Baldwin, 1974).
AAPG geologic province:
Oregon-Washington Coast Ranges province
Klamath 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 ([ ]).