Leadville, Gilman, Dyer, Parting, and Sawatch Fms in west-central and south-central. Leadville Limestone, Ouray Limestone, Elbert Fm, and Ignacio Quartzite in far southwest

Elbert Fm: shale and sandstone.
State Colorado
Name Leadville, Gilman, Dyer, Parting, and Sawatch Fms in west-central and south-central. Leadville Limestone, Ouray Limestone, Elbert Fm, and Ignacio Quartzite in far southwest
Geologic age Mississipian-Cambrian
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone
Metamorphic > Metasedimentary > Metaclastic > Quartzite
Sedimentary > Carbonate > Dolostone
Minor
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 Archuleta - Eagle - Grand - Hinsdale - La Plata - Routt - San Juan