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San Andres Formation

San Andres Formation; limestone and dolomite with minor shale; Guadalupian in south, in part Leonardian to north
State New Mexico
Name San Andres Formation
Geologic age Phanerozoic | Paleozoic | Permian
Comments Limesone (dolomite in north), sandstone, gypsum/evaporites, redbeds.
Primary rock type carbonate
Secondary rock type fine-grained mixed clastic
Other rock types evaporite
Lithologic constituents
Major
Sedimentary > Carbonate (Calcareous)limestone and dolomite with minor shale
Minor
Sedimentary > Clastic > Mudstone > Shale (Bed)limestone and dolomite with minor shale
Incidental
Sedimentary > Chemical > Evaporite > Gypsum (Bed)limestone and dolomite with minor shale
Map references
Anderson, O.J., Jones.G.E., and Green, G.N., compilers, 1997, Geologic map of New Mexico: U.S. Geological Survey Open-File Report 97-52.
Unit references
Anderson, O.J., Jones.G.E., and Green, G.N., compilers, 1997, Geologic map of New Mexico: U.S. Geological Survey Open-File Report 97-52.
USGS Geologic Names Lexicon (GEOLEX)
Counties Chaves - Cibola - DeBaca - Dona Ana - Eddy - Guadalupe - Lincoln - McKinley - Otero - San Miguel - Santa Fe - Sierra - Socorro - Torrance - Valencia