Upper Tertiary sedimentary units

Includes Bidahochi Formation (Pliocene to upper Miocene), Picuris Formation (Miocene to Oligocene), Las Feveras Formation (Pliocene), lower Gila Group units in the southwest, and unnamed Pliocene unit in northwestern Socorro County.
State New Mexico
Name Upper Tertiary sedimentary units
Geologic age Pliocene to upper Oligocene
Lithologic constituents
Major
Sedimentary > Clastic (Bed, Tuffaceous)no lith description on map - description from GEOLEX - mostly conglomerate, mudstone and sandstone.
Minor
Igneous > Volcanic (Flow, Pyroclastic-tuff)no lith description on map - description from GEOLEX - flows, tuffs interlayered with volcanic sedimentary rocks.
Unconsolidated (Alluvial, Fluvial)no lith description on map - description from GEOLEX - both coarse and fine-detrital; mostly gravel and sand of rocks from volcanic origin.
References
NGMDB product
Counties Catron - Cibola - Colfax - Luna - McKinley - Mora - Socorro - Taos