lower part of Green River Fm and Wasatch Fm

Shale and sandstone
State Colorado
Name lower part of Green River Fm and Wasatch Fm
Geologic age Tertiary
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Clastic > Sandstone
References

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

NGMDB product
Counties Rio Blanco