Olds Ferry terrane.

Basaltic to rhyolitic (largely intermediate) arc-derived volcanic and volcaniclastic rocks of the Huntington Formation; includes minor chert and limestone. (Mesozoic-Paleozoic Rocks of the Blue Mountains Island-Arc Complex).
State Idaho
Name Olds Ferry terrane.
Geologic age Jurassic and Triassic
Lithologic constituents
Major
Igneous > Volcanic > Mafic-volcanic > Basalt (Volcaniclastic)Basaltic to rhyolitic (largely intermediate) arc-derived volcanic and volcaniclastic rocks of the Huntington Formation.
Igneous > Volcanic > Felsic-volcanic > Rhyolite (Volcaniclastic)Basaltic to rhyolitic (largely intermediate) arc-derived volcanic and volcaniclastic rocks of the Huntington Formation.
Minor
Sedimentary > Chemical > Chert
Sedimentary > Carbonate > Limestone
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
Counties Adams - Washington