White River Formation - Chadron Member

Light-gray to dark-red tuffaceous claystone, sandstone, and lenticular conglomerate.
State Wyoming
Name White River Formation - Chadron Member
Geologic age Oligocene
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Claystone (Tuffaceous)
Sedimentary > Clastic > Sandstone (Tuffaceous)
Sedimentary > Clastic > Conglomerate (Lens)
References
NGMDB product
Counties Goshen - Platte