Sedimentary rocks (Permian and Pennsylvanian).

Marine phosphorite, shale, and chert of Phosphoria Formation, fine-grained sandstone and mudrock of Wells, Quadrant, Amsden, and Shedhorn formations, and fine-grained sandstone, carbonaceous mudstone, and limestone of the Snaky Canyon Formation and Sun Valley and Oquirrh groups. Located in south-central and eastern Idaho. (Paleocene to Neoproterozoic Sedimentary and Igneous Rocks of the Cordilleran System).
State Idaho
Name Sedimentary rocks (Permian and Pennsylvanian).
Geologic age Permian and Pennsylvanian
Lithologic constituents

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 Bannock - Bear Lake - Bingham - Blaine - Bonneville - Butte - Camas - Caribou - Cassia - Clark - Custer - Lemhi - Madison - Oneida - Power - Teton - Twin Falls