Animas Fm

Arkosic sandstone, shale, and conglomerate; contains abundant volcanic materials; Upper Cretaceous volcaniclastic McDermott Member at base
State Colorado
Name Animas Fm
Geologic age Tertiary-Cretaceous
Lithologic constituents
Sedimentary > Clastic > Conglomerate
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Clastic > Sandstone > Arkose
Igneous > Volcanic

Tweto, Ogden, 1979, Geologic Map of Colorado: U.S. Geological Survey Special Geologic Map, scale 1:500,000.

NGMDB product
Counties Archuleta - La Plata - Mineral