Usage:
Aldwell Formation (WA*)
Geologic age:
early Tertiary (middle to late Eocene)*
Type section, locality, area and/or origin of name:
Type section: exposures along Lake Aldwell, on Elwha River from point 700 ft west, 50 ft south of northeast corner of sec. 28, T. 30 N., R. 7 W., to point 1,600 ft east, 1,200 ft south of northwest corner of sec. 22, T. 30 N., R. 7 W., [in vicinity of Lat. 48 deg. 04 min. 30 sec. N., Long. 123 deg. 34 min. 10 sec. W., Elwha 7.5-min quadrangle], Clallam Co., northwestern WA. Origin of name not stated by authors, but probably named from Lake Aldwell (Brown and others, 1960).
AAPG geologic province:
Puget Sound 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 ([ ]).