Ferris Formation

Brown and gray sandstone and shale; sparse carbonaceous shale and coal beds; thin lenses of pebble conglomerate.
State Wyoming
Name Ferris Formation
Geologic age Upper Cretaceous-Paleocene
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale (Carbonaceous)
Sedimentary > Clastic > Sandstone
Minor
Sedimentary > Clastic > Conglomerate
Sedimentary > Coal
References
NGMDB product
Counties Carbon