Lemhi Group. (IDYl;0)

Lemhi Group.

Feldspathic fine-grained quartzite, siltite, and subordinate argillite and carbonate-bearing rocks in east-central Idaho; includes Apple Creek, West Fork, Inyo Creek, Big Creek, and Gunsight formations. (Mesoproterozoic Metasedimentary Rocks of Lemhi Subbasin of Belt Basin).

State	Idaho
Name	Lemhi Group.
Geologic age	Mesoproterozoic
Lithologic constituents	Major Metamorphic > Metasedimentary > Metaclastic > MetasiltstoneSiltite. Metamorphic > Metasedimentary > Metaclastic > QuartziteFeldspathic fine-grained quartzite. Minor Metamorphic > Metasedimentary > Metaclastic > Argillite Sedimentary > CarbonateCarbonate-bearing rocks in east-central Idaho.
References	Lewis, Reed S., Link, Paul K., Stanford, Loudon R., and Long, Sean P., Geologic Map of Idaho, 2012, Idaho Geological Survey, Geologic Map 9 (M-9); Scale 1:500,000.
NGMDB product	NGMDB product page for 97750
Counties	Clark - Custer - Idaho - Lemhi - Valley

Lemhi Group.

Lewis, Reed S., Link, Paul K., Stanford, Loudon R., and Long, Sean P., Geologic Map of Idaho, 2012, Idaho Geological Survey, Geologic Map 9 (M-9); Scale 1:500,000.