Eagle Valley Fm - evaporitic facies

Gypsum, siltstone, and shale; salt present in deep borings. Intertongues with Minturn and Lower Maroon Fms. Diapiric structure in many places
State Colorado
Name Eagle Valley Fm - evaporitic facies
Geologic age Pennsylvanian
Lithologic constituents
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Clastic > Sandstone
Sedimentary > Chemical > Evaporite > Gypsum
Sedimentary > Chemical > Evaporite > Salt

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

NGMDB product
Counties Eagle - Garfield - Pitkin - Rio Blanco