Lykins Lyons and Fountain Fms

Red siltstone, sandstone, and conglomerate
State Colorado
Name Lykins Lyons and Fountain Fms
Geologic age Triassic-Pennsylvanian
Lithologic constituents
Sedimentary > Clastic > Sandstone
Sedimentary > Clastic > Conglomerate
Sedimentary > Clastic > Siltstone

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

NGMDB product
Counties Boulder - Douglas - Jefferson