Usage:
Gibraltar Rock Member of Tiger Formation (WA)
Geologic age:
Tertiary
Eocene, middle
through
Miocene, middle
Type section, locality, area and/or origin of name:
Type section: exposures at Gibraltar Rock, from the top down an east-facing gully, SE/4 NE/4 NW/4 and SW/4 NW/4 NE/4 sec. 5, T. 34 N., R. 43 E., Pend Oreille Co., WA (Gager, 1983).
AAPG geologic province:
Northern Cascade Range-Okanagan 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 ([ ]).