Paleoproterozoic rhyolite and felsic volcanic schist

Includes 1.70 Ga Vadito Group in northern New Mexico and 1.68 Ga Sevilleta Metarhyolite in central New Mexico.
State New Mexico
Name Paleoproterozoic rhyolite and felsic volcanic schist
Geologic age Paleoproterozoic
Lithologic constituents
Metamorphic > Metaigneous > Metavolcanic > Metarhyolite
Metamorphic > SchistGEOLEX - mostly quartz-muscovite-feldspar schist with quartz megacrysts, but also - biotite-muscovite schist, pelitic schist, and chlorite schist.

New Mexico Bureau of Geology and Mineral Resources, 2003, Geologic Map of New Mexico, scale 1:500,000 (includes some new polygons, faults, and attributes not in NM001 - heads up digitizing by JHorton).

USGS Geologic Names lexicon found at:

NGMDB product
Counties Bernalillo - Cibola - Dona Ana - Mora - Rio Arriba - Sandoval - San Miguel - Santa Fe - Sierra - Socorro - Taos - Torrance - Valencia