Morrison, Curtis, and Entrada Fms

In extreme southwestern Moffat County, includes thin wedge of Carmel Fm (red siltstone and sandstone) beneath Entrada
State Colorado
Name Morrison, Curtis, and Entrada Fms
Geologic age Jurassic
Lithologic constituents
Sedimentary > Clastic > Sandstone
Sedimentary > Clastic > Mudstone > Claystone
Sedimentary > Clastic > Mudstone

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

NGMDB product
Counties Eagle - Garfield - Moffat - Routt