Gannett Group

Red sandy mudstone, sandstone, and chert-pebble conglomerate; thin limestone and dark-gray shale in upper part, more conglomeratic in lower part. Includes Smoot Formation (red mudstone and siltstone), Draney Limestone, Bechler Conglomerate, Peterson Limestone, and Ephraim Conglomerate. Upper Jurassic fossils have been reported from the Ephraim.
State Wyoming
Name Gannett Group
Geologic age Lower Cretaceous
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone
Sedimentary > Clastic > Conglomerate
Sedimentary > Clastic > Sandstone
Minor
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Clastic > Siltstone
Sedimentary > Carbonate > Limestone
References
NGMDB product
Counties Lincoln - Sublette - Teton - Uinta