Usage:
Shuksan Greenschist of Easton Metamorphic Suite (WA*)
Geologic age:
Early Cretaceous* (metamorphic age)
Type section, locality, area and/or origin of name:
Mount Shuksan (in vicinity of Lat. 48 deg. 50 min. 00 sec. N., Long. 121 deg. 36 min. 00 sec. W.), north of the Skykomish River 30- x 60-min quadrangle, Northern Cascades, north-central WA (Tabor and others, 1993).
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 ([ ]).