Usage:
Quincy diatomite bed (informal) of Lmuma Creek Member of Ellensburg Formation (WA*)
Geologic age:
late Tertiary (late Miocene)
Type section, locality, area and/or origin of name:
Type area: area of many quarry exposures in southwestern part of Quincy basin near head of Frenchman Springs Coulee [Frenchman Coulee], in S/2 sec. 16, SE/4 sec. 17, NE/4 sec. 20, and N/2 sec. 21, T. 18 N., R. 23 E., [Evergreen Ridge 7.5-min quadrangle, Grant Co., south-central WA] (Bingham and Grolier, 1966).
AAPG geologic province:
Eastern Columbia basin
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 ([ ]).