Sego Sandstone, Buck Tongue of Mancos Shale, and Castlegate Sandstone

Sego Sandstone, Buck Tongue of Mancos Shale, and Castlegate Sandstone
State Colorado
Name Sego Sandstone, Buck Tongue of Mancos Shale, and Castlegate Sandstone
Geologic age Cretaceous
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone
Sedimentary > Clastic > Mudstone > Shale
References

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

NGMDB product
Counties Moffat - Rio Blanco