Morrison Fm

Variegated claystone, mudstone, sandstone, and local beds of limestone
State Colorado
Name Morrison Fm
Geologic age Jurassic
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone
Sedimentary > Clastic > Mudstone
Sedimentary > Clastic > Mudstone > Claystone
Minor
Sedimentary > Carbonate > Limestone
References

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

NGMDB product
Counties Dolores - Eagle - Grand - Moffat - Montezuma - Montrose - Ouray - Routt - San Miguel - Summit - Teller