Usage:
Riggins Group (ID*)
Subunits:
(alphabetical) --all in ID*: Berg Creek Amphibolite, Fiddle Creek Schist, /Lightning Creek Schist, /Squaw Creek Schist [See Below].
[NOTE: The Squaw Creek Schist of the Riggins Group is in the process of being formally renamed, in accordance with the Department of the Interior's Secretarial Order 3404, issued on November 19, 2021, that identifies the term “squaw” as derogatory.]
Geologic age:
Paleozoic* or Mesozoic*
Type section, locality, area and/or origin of name:
Type section: along Salmon River from Riggins northward to just beyond edge of Riggins quadrangle (scale 1:100,000), Idaho Co., western ID (Hamilton, 1963).
AAPG geologic province:
Idaho 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 ([ ]).