The Albuquerque volcanic field is a monogenetic

volcanic field A volcanic field is an area of Earth's crust that is prone to localized volcanic activity. The type and number of volcanoes required to be called a "field" is not well-defined. Volcanic fields usually consist of clusters of up to 100 volcanoes ...

in the

Albuquerque Basin The Albuquerque Basin (or Middle Rio Grande Basin) is a structural basin and ecoregion within the Rio Grande rift in central New Mexico. It contains the city of Albuquerque. Geologically, the Albuquerque Basin is a half-graben that slopes down to ...

New Mexico ) , population_demonym = New Mexican ( es, Neomexicano, Neomejicano, Nuevo Mexicano) , seat = Santa Fe , LargestCity = Albuquerque , LargestMetro = Tiguex , OfficialLang = None , Languages = English, Spanish ( New Mexican), Navajo, Ker ...

, United States. It is located about west of the city of

Albuquerque Albuquerque ( ; ), ; kee, Arawageeki; tow, Vakêêke; zun, Alo:ke:k'ya; apj, Gołgéeki'yé. abbreviated ABQ, is the most populous city in the U.S. state of New Mexico. Its nicknames, The Duke City and Burque, both reference its founding in ...

, and is contained within the borders of

Petroglyph National Monument Petroglyph National Monument stretches along Albuquerque, New Mexico's West Mesa, a volcanic basalt escarpment that dominates the city's western horizon. Authorized June 27, 1990, the 7,236 acre (29.28 km2) monument is cooperatively mana ...

. The field was active from 190,000 to 155,000 years ago and includes

lava flows Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface. Lava may be erupted at a volcano or through a fracture in the crust, on land or un ...

cinder cones A cinder cone (or scoria cone) is a steep conical hill of loose pyroclastic fragments, such as volcanic clinkers, volcanic ash, or scoria that has been built around a volcanic vent. The pyroclastic fragments are formed by explosive eruptions or ...

, and

spatter cones Volcanic cones are among the simplest volcanic landforms. They are built by ejecta from a volcanic vent, piling up around the vent in the shape of a cone with a central crater. Volcanic cones are of different types, depending upon the nature and s ...

. The oldest lava flows cover about . The cones are aligned and possibly formed above two roughly north-south trending fissures.

Vulcan Vulcan may refer to: Mythology * Vulcan (mythology), the god of fire, volcanoes, metalworking, and the forge in Roman mythology Arts, entertainment and media Film and television * Vulcan (''Star Trek''), name of a fictional race and their home p ...

(also called J Volcano) is the highest feature. Its base is made of cinder, but the crater contains a lava dome that was cut by an explosive eruption.

Notable vents

The field consists of six named volcanoes. From north to south, they are *Butte Volcano, elevation *Bond Volcano, elevation *

or J Volcano, elevation *Cinder Volcano, elevation *

Black Volcano Black Volcano is an inactive volcano located near Albuquerque, New Mexico, and is part of the Albuquerque volcanic field. Black Volcano is located directly north of JA volcano. Black Volcano is the second of five volcanoes (traveling south t ...

, elevation *

JA Volcano JA Volcano is an inactive volcano located near Albuquerque, New Mexico. JA Volcano is the southernmost of 5 volcanoes in a 5-mile chain within the western boundary of Petroglyph National Monument. The volcano has been the site of repeated pranks ...

, elevation Cinder Volcano has little

topographical prominence In topography, prominence (also referred to as autonomous height, relative height, and shoulder drop in US English, and drop or relative height in British English) measures the height of a mountain or hill's summit relative to the lowest contou ...

and is not usually considered one of the main volcanoes. The cone was much higher in the past but was substantially eroded by mining activity, with the cinder material extracted for use in landscaping,

cinder blocks A concrete masonry unit (CMU) is a standard-size rectangular block used in building construction. CMUs are some of the most versatile building products available because of the wide variety of appearances that can be achieved using them. Tho ...

, and railroad beds. The three closely spaced southern volcanoes, JA, Black, and Vulcan, are sometimes collectively referred to as the "Three Sisters". These three volcanoes are accessible by hiking trails and a parking area administered as part of

Vulcan

The largest of the cones in the Albuquerque volcanic field is

, named after the Roman god of fire. From a vantage point on top of the cone 200 feet above mesa, the alignment of the 5-mile-long chain of vents is particularly noticeable. Vulcan is a spatter cone, formed primarily by fire fountains that were active in the central vent and in smaller vents on flanks of the cone. (Spatter forms when blobs of lava are emitted from a vent, and cool as they fly through the air, and the partially molten blobs then land on the side of the cone to weld together to form a hard crust.) Fragmented cinder and spatter material and lava flows dip at angles as high as 55° away from the central vent on the eastern and southern side of the Vulcan. The spatter material is thickest on the southeastern side of Vulcan, indicating that it was blown by the wind toward the south and east during the fountaining events. A solidified lava pond that consists of a massive gray basalt with weakly developed columnar jointing occupies the crater of Vulcan. Radial, sinuous lava tubes 8 to 20 inches across and 300 feet long are preserved on the northeast and northwest flanks of Vulcan.

Black Volcano

Black Volcano is an

inactive volcano A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates are ...

near

Albuquerque, New Mexico Albuquerque ( ; ), ; kee, Arawageeki; tow, Vakêêke; zun, Alo:ke:k'ya; apj, Gołgéeki'yé. abbreviated ABQ, is the most populous city in the U.S. state of New Mexico. Its nicknames, The Duke City and Burque, both reference its founding in ...

. Black Volcano is directly north of

JA volcano JA Volcano is an inactive volcano located near Albuquerque, New Mexico. JA Volcano is the southernmost of 5 volcanoes in a 5-mile chain within the western boundary of Petroglyph National Monument. The volcano has been the site of repeated pranks ...

. Black Volcano is the second of five volcanoes (traveling south to north) within the western boundary of

. North of Black Volcano are Vulcan, Bond and Butte volcanoes. The date of its last eruption is unknown, but is believed to have been more than 150,000 years ago.

References

External links

* {{Clear Volcanic fields of New Mexico Landforms of Bernalillo County, New Mexico Quaternary geology of New Mexico Monogenetic volcanic fields Basin and Range Province Pleistocene volcanism

Notable vents

Vulcan

Black Volcano

See also

References

External links