Raton Fm

Arkosic sandstone, siltstone, and shale; contains major coal deposits in Raton Basin
State Colorado
Name Raton Fm
Geologic age Tertiary-Cretaceous
Lithologic constituents
Major
Sedimentary > Clastic > Siltstone
Sedimentary > Clastic > Sandstone > Arkose
Sedimentary > Clastic > Mudstone > Shale
Minor
Sedimentary > Coal (Bed)
References

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

NGMDB product
Counties Fremont - Huerfano - Las Animas