Tres Hermanos Formation

Formerly designated as Lower Gallup Sandstone in the Zuni Basin.
State New Mexico
Name Tres Hermanos Formation
Geologic age Turonian
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone (Bed)no lith description on map - description from GEOLEX
Minor
Sedimentary > Clastic > Mudstone > Shale (Bed)no lith description on map - description from GEOLEX
References
NGMDB product
Counties Catron - Cibola - McKinley - Socorro