Usage:
White Tail Ridge Member of Umpqua Formation (OR)
White Tail Ridge Member of Flournoy Formation (OR)
White Tail Ridge Formation of Umpqua Group (OR)
Geologic age:
Tertiary
Eocene, middle
Type section, locality, area and/or origin of name:
Not stated. Makes up White Tail Ridge and Sugar Pine Ridge in Camas Valley quadrangle, Douglas Co., OR. Named from White Tail Ridge, Douglas Co., OR (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 ([ ]).