Animas Formation

Volcaniclastic sedimentary rocks of intermediate composition in northern San Juan Basin.
State New Mexico
Name Animas Formation
Geologic age Paleocene and upper Cretaceous
Lithologic constituents
Major
Igneous > Volcanic > Mafic-volcanic > Andesite (Volcaniclastic, Pyroclastic-tuff)no lith description on map - description from GEOLEX - volcaniclastic sediments, primarily composed of andesite.
Sedimentary > Clastic > Mixed-clastic > Conglomerate-sandstone (Tuffaceous)no lith description on map - description from GEOLEX
References
NGMDB product
Counties Rio Arriba - San Juan