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Upper middle Tertiary rhyolitic pyroclastic rocks of the Mogollon Group, ash-flow tuffs
Regional ash-flow tuffs include the La Jencia, Vick's Peak, Lemitar, South Canyon, Bloodgood Canyon, Shelley Peak, Davis Canyon, Park, Rhyolite Canyon, Apache Springs, and Amalia Tuffs; the tuffs of Horseshoe Canyon, Diamond Creek, Garcia Camp, Caronita Canyon, Turkey Springs, and Little Mineral Creek; and the Jordan Canyon Formation. Includes some locally erupted lavas and tuffs within thick intra-caldera units; includes minor volcaniclastic sedimentary units between thin outflow sheets.
State |
New Mexico |
Name |
Upper middle Tertiary rhyolitic pyroclastic rocks of the Mogollon Group, ash-flow tuffs |
Geologic age |
Upper Oligocene (24-30 Ma) |
Lithologic constituents |
Major
Igneous > Volcanic > Felsic-volcanic > Rhyolite (Flow, Pyroclastic-ash flow, Pyroclastic-tuff)
Minor
Sedimentary > Clastic (Tuffaceous)Minor volcaniclastic sedimentary units between thin outflow sheets.
|
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 |
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Counties |
Catron - Colfax - Grant - Hidalgo - Luna - Rio Arriba - Sierra - Socorro - Taos
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