Gneissic and schistose metasedimentary rocks. (IDYm;0)

Gneissic and schistose metasedimentary rocks.

Biotite-rich paragneiss and schist, and subordinate feldspathic quartzite and calc-silicate rocks. Probably metamorphosed western facies of Lemhi subbasin. Characterized by igneous suite of Yam and Yag. Includes Elk City metamorphic sequence and metamorphic rocks east of Moscow, along Salmon River northwest of Salmon, and in Pioneer Mountains. (Mesoproterozoic Metasedimentary Rocks of Lemhi Subbasin of Belt Basin).

State	Idaho
Name	Gneissic and schistose metasedimentary rocks.
Geologic age	Mesoproterozoic
Lithologic constituents	Major Metamorphic > Schist > Mica-schist > Biotite-schist Metamorphic > Metasedimentary > Paragneiss Minor Metamorphic > Metasedimentary > Calc-silicate-rock Metamorphic > Metasedimentary > Metaclastic > Quartzite
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	Clearwater - Custer - Idaho - Latah - Lemhi - Nez Perce - Valley

Gneissic and schistose metasedimentary rocks.

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.