Green River Fm--Parachute Creek Member

Parachute Creek Member--Oil shale, marlstone, and siltstone; in Piceance basin
State Colorado
Name Green River Fm--Parachute Creek Member
Geologic age Tertiary
Lithologic constituents
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Clastic > Mudstone > Shale > Oil-shale
Sedimentary > Carbonate > Marlstone
Sedimentary > Clastic > Siltstone

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

NGMDB product
Counties Delta - Garfield - Mesa - Moffat - Rio Blanco