Lower Santa Fe Group

Includes Hayner Ranch, Rincon Valley, Popotosa, Cochiti, Tesuque, Chamita, Abiquiu, Zia, and other formations.
State New Mexico
Name Lower Santa Fe Group
Geologic age Upper Miocene to uppermost Oligocene
Lithologic constituents
Major
Unconsolidated > Coarse-detrital (Bed)no lith description on map - description from GEOLEX - mostly gravel and sand from mostly volcanic tuffs.
Sedimentary > Clastic > Mixed-clastic > Conglomerate-sandstone (Bed, Tuffaceous)no lith description on map - description from GEOLEX
Unconsolidated > Fine-detrital (Bed)no lith description on map - description from GEOLEX - silt and clay/mud from mostly volcanic tuffs.
References
NGMDB product
Counties Bernalillo - Catron - Colfax - Dona Ana - Luna - Rio Arriba - Sandoval - Santa Fe - Sierra - Socorro - Taos - Valencia