Tonalite and trondhjemite. (IDKtt;0)

Tonalite and trondhjemite.

Biotite- and hornblende-biotite tonalite and biotite-muscovite trondhjemite (120-110 Ma); rocks contain conspicuous magmatic epidote in plutons along eastern edge of arc complex. Includes tonalitic part of Hazard Creek complex northwest of McCall, Blacktail pluton southeast of Grangeville, and Sixmile Creek pluton southeast of Orofino. (Mesozoic-Paleozoic Rocks of the Blue Mountains Island-Arc Complex).

State	Idaho
Name	Tonalite and trondhjemite.
Geologic age	Cretaceous
Lithologic constituents	Major Igneous > Plutonic > Granitic > Tonalite > Trondhjemite (Pluton)Biotite-muscovite trondhjemite. Rocks contain conspicuous magmatic epidote in plutons along eastern edge of arc complex. Igneous > Plutonic > Granitic > Tonalite (Pluton)Biotite- and hornblende-biotite tonalite. Rocks contain conspicuous magmatic epidote in plutons along eastern edge of arc complex.
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	Adams - Clearwater - Idaho - Lewis - Washington

Tonalite and trondhjemite.

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.