Morrison Fm and Sundance Fm

Sundance Fm: Sandstone, shale, claystone, and limestone
State Colorado
Name Morrison Fm and Sundance Fm
Geologic age Jurassic
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone
Sedimentary > Clastic > Sandstone
Sedimentary > Clastic > Mudstone > Claystone
Minor
Sedimentary > Clastic > Mudstone > Shale
References

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

NGMDB product
Counties Grand