U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Crider

Usage:

Crider Gneiss (GA*)


Geologic age:

Neoproterozoic(?) to Middle Ordovician(?)


Type section, locality, area and/or origin of name:

Type section (composite): saprolite outcrops in New Georgia 7.5-min quadrangle, shown in fig. 8 of Crawford and others (in press). Named from Crider Creek, New Georgia 7.5-min quadrangle, northwestern GA (Crawford and others, in press).


AAPG geologic province:

Piedmont-Blue Ridge 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 ([ ]).