Pictured Cliffs Sandstone and Lewis Shale

Pictured Cliffs Sandstone and Lewis Shale
State Colorado
Name Pictured Cliffs Sandstone and Lewis Shale
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 Archuleta - Hinsdale - La Plata - Mineral