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Zuni-Bandera Volcanic Field
Zuni-Bandera Volcanic Field
	Bandera Crater in the center is part of the Zuni-Bandera lava field.
Highest point
Elevation	8,366 ft (2,550 m)
Coordinates	34°48′00″N 108°00′00″W / 34.80000°N 108.00000°W
Geography
Location	Cibola County, New Mexico, US
Geology
Rock age	3.8 million years
Mountain type	Volcanic field
Last eruption	1170 BCE ± 300 years

Zuni-Bandera volcanic field (also known as Bandera lava field, Grants Malpais and Malpais volcanic field) is a volcanic field located in the state of New Mexico, United States.^[1]

The volcanic field has been considered for geothermal exploitation.^[2]

It is on the Trails of the Ancients Byway, one of the designated New Mexico Scenic Byways.^[3]

Origins

The Zuni-Bandera volcanic field lies along the Jemez Lineament, a zone of weakness in the lower crust and upper mantle that allows magma formed in the mantle to reach the surface.^[4] The magmas erupted in the field includes both tholeiitic basalt (an iron-rich basalt with a low alkali content) and alkaline basalt. The tholeiitic basalt shows chemical and isotopic signatures of magma formed from the spinel-rich mantle rock of the lithosphere, the outer rigid shell of the Earth that includes the crust and uppermost mantle. The alkaline basalt, by contrast, formed from the garnet-rich mantle rock of the asthenosphere, the ductile region of the mantle just below the lithosphere. Little crustal material was assimilated into the magmas, although the tholeiitic magma experienced some fractional crystallization at shallow depths in the crust.^[5]

Exploration

A significant portion of the volcanic field is part of the El Malpais National Monument. Several of the lava tubes are available for exploration by permit. In addition, hiking trails enable visitors to see the lava field's unique characteristics.

Bandera Crater

Located on private property at 35°00′N 108°05′W / 35.0°N 108.08°W / 35.0; -108.08 (Bandera Crater) and possessing a height of 2,533 metres (8,310 ft), Bandera Crater last erupted between 9,500 and 10,900 years ago.^[6]^[7]^[8]

The nearly 17.5 mile long lava tube emanating from this crater is the longest in North America. Most of the lava tube has collapsed but portions still remain as caves. One of these caves contains an over 900 year old ice cave and can be accessed by the public. The land that contains the ice cave was purchased by Sylvestre Mirabal in the early 1900s. Mirabal mined the ice in the ice cave to cool the beer in a saloon that he operated. His daughter married into the Candelaria family, which continues to own and operate the ice cave to this day. Ice mining was halted in 1946.^[9]^[10]

The ice cave, itself, never gets above 31 °F. It is currently 20 ft thick and has a green hue due to Arctic algae.^[9]^[10]

Other Notable Vents

Name	Elevation	Coordinates	Last eruption
Cerro Bandera^[6]^[7]	2,552 metres (8,373 ft)	35°00′N 108°06′W / 35.0°N 108.1°W / 35.0; -108.1 (Cerro Bandera)	-
El Calderon^[6]^[11]	2,320 metres (7,612 ft)	34°58′N 108°01′W / 34.97°N 108.02°W / 34.97; -108.02 (El Calderon)	-
Cerro Colorado^[6]	-	-	-
Cerro Encierro^[6]	2,298 metres (7,539 ft)	34°53′N 108°03′W / 34.88°N 108.05°W / 34.88; -108.05 (Cerro Encierro)	-
Hoyo De Cibola^[6]	2,380 metres (7,808 ft)	34°53′N 108°07′W / 34.88°N 108.12°W / 34.88; -108.12 (Hoyo De Cibola)	-
Cerro Hueco (Deer Mountain)^[6]	2,441 metres (8,009 ft)	-	-
Laguna^[6]	-	-	-
Lost Woman^[6]	2,459 metres (8,068 ft)	34°58′N 108°05′W / 34.97°N 108.08°W / 34.97; -108.08 (Lost Woman)	-
McCarty's Flow^[7]^[12]	2,244 metres (7,362 ft)	35°00′N 107°48′W / 35.0°N 107.8°W / 35.0; -107.8 (McCartys Flow)	2,500-3,900 years ago^[8]
Paxton Springs^[6]^[7]	2,490 metres (8,169 ft)	35°04′N 108°04′W / 35.07°N 108.07°W / 35.07; -108.07 (Paxton Springs)	-
Cerro Rendija^[6]^[7]	2,494 metres (8,182 ft)	34°57′N 108°08′W / 34.95°N 108.13°W / 34.95; -108.13 (Cerro Rendija)	-
La Tetra (Cerro Tetra)^[6]	2,458 metres (8,064 ft)	34°59′N 108°03′W / 34.98°N 108.05°W / 34.98; -108.05 (La Tetra)	-
El Tintero^[7]	2,201 metres (7,221 ft)	-	-
Twin Craters^[6]	2,423 metres (7,949 ft)	34°59′N 108°04′W / 34.98°N 108.07°W / 34.98; -108.07 (Twin Craters)	15,800-17,800 years ago^[8]

References

^ ^a ^b ^c ^d ^e "Zuni-Bandera". Global Volcanism Program. Smithsonian Institution. Retrieved 2008-05-30.
^ Laughlin, A.W.; West, F.G. (1975-12-01). Zuni Mountains, New Mexico as a potential dry hot rock geothermal energy Site (Report). United States Department of Energy. doi:10.2172/7366687. OSTI 7366687.
^ "Trail of the Ancients". New Mexico Tourism Department. Archived from the original on August 21, 2014.
^ Channer, Michael A.; Ricketts, Jason W.; Zimmerer, Matthew; Heizler, Matthew; Karlstrom, Karl E. (1 October 2015). "Surface uplift above the Jemez mantle anomaly in the past 4 Ma based on 40Ar/39Ar dated paleoprofiles of the Rio San Jose, New Mexico, USA". Geosphere. 11 (5): 1384–1400. Bibcode:2015Geosp..11.1384C. doi:10.1130/GES01145.1.
^ Peters, Timothy J.; Menzies, Martin; Thirlwall, Matthew; Kyle, Philip R. (April 2008). "Zuni–Bandera volcanism, Rio Grande, USA — Melt formation in garnet- and spinel-facies mantle straddling the asthenosphere–lithosphere boundary". Lithos. 102 (1–2): 295–315. Bibcode:2008Litho.102..295P. doi:10.1016/j.lithos.2007.08.006.
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m "Zuni-Bandera: Synonyms and Subfeatures". Global Volcanism Program. Smithsonian Institution. Retrieved 2007-05-07.
^ ^a ^b ^c ^d ^e ^f Ander, M.E.; Heiken, G.; Eichelberger, J.; Laughlin, A.W.; Huestis, S. (1981-05-01). Geologic and geophysical investigations of the Zuni-Bandera volcanic field, New Mexico (Report). United States Department of Energy, Los Alamos National Laboratory. doi:10.2172/6516124. OSTI 6516124.
^ ^a ^b ^c "Background on the Zuni-Bandera Volcanic Field". New Mexico Bureau of Geology and Mineral Resources. Retrieved 2009-06-30.
^ ^a ^b "TRAIL GUIDES". Ice Cave and Bandera Volcano. Retrieved 8 October 2021.
^ ^a ^b "HISTORY". Ice Cave and Bandera Volcano. Retrieved 8 October 2021.
^ "Into a Lava-Lined Underworld Near Albuquerque". The New York Times. 2014-08-28. Additional lava caves reachable from El Calderon trailhead
^ "McCartys Flow, Zuni - Bandera Volcanic Field, New Mexico". Volcano World. Retrieved 2007-05-08.