Usage:
Cascade River Schist (WA*)
Geologic age:
Late Cretaceous to early Tertiary*
Type section, locality, area and/or origin of name:
Not designated. Named from exposures along Cascade River (Tabor, 1962; Tabor and others, 2002)
Principle reference locality [composite]: main valley walls of the North, South, and Middle Forks of the Cascade River, surrounding Lat. 48 deg. 27 min. 00 sec. N., Long. 121 deg. 05 min. 00 sec. W., Cascade Pass 7.5-min quadrangle, Skagit Co., WA (Tabor and others, 2002).
AAPG geologic province:
Cascades 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 ([ ]).