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Middle Tertiary volcanic rocks, undifferentiated

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Includes the predominantly andesitic to dacitic stratovolcano complex at Sierra Blanca (Oligocene to upper Eocene) and many smaller outliers.
State New Mexico
Name Middle Tertiary volcanic rocks, undifferentiated
Geologic age Lower Miocene to upper Eocene
Lithologic constituents
Major
Igneous > Volcanic > Felsic-volcanic > Dacite (Flow)
Igneous > Volcanic > Mafic-volcanic > Andesite (Flow)
References

Green, G.N., Jones, G.E., and Anderson, O.J., 1997, The Digital Geologic Map of New Mexico in ARC/INFO Format: U.S. Geological Survey Open-File Report 97-0052, 9 p., scale 1:500,000.

https://pubs.er.usgs.gov/publication/ofr9752
NGMDB product
Counties Colfax - Lincoln - Luna - Otero - Rio Arriba - Sierra - Socorro