Fort Union Formation - Tongue River Member

Thick beds of yellow sandstone interbedded with gray and black shale and many coal beds.
State Wyoming
Name Fort Union Formation - Tongue River Member
Geologic age Paleocene
Lithologic constituents
Major
Sedimentary > Coal
Sedimentary > Clastic > Sandstone
Sedimentary > Clastic > Mudstone > Shale
Comments Youngest of the 3 Fort Union members
References
NGMDB product
Counties Campbell - Sheridan