San Carlos 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 ...

Arizona Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Fou ...

. The field lies within the San Carlos Apache Reservation about east of

Globe, Arizona Globe ( apw, Bésh Baa Gowąh "Place of Metal") is a city in Gila County, Arizona, United States. As of the 2020 census, the population of the city was 7,249. The city is the county seat of Gila County. Globe was founded c. 1875 as a mining ca ...

. It is a small field covering approximately 50 km² or less of

volcanic cone 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 and

lava 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 ...

flows. The basanite to

hawaiite Hawaiite is an olivine basalt with a composition between alkali basalt and mugearite. It was first used as a name for some lavas found on the island of Hawaii. It occurs during the later stages of volcanic activity on oceanic islands such as Ha ...

basaltic flows contain

xenolith A xenolith ("foreign rock") is a rock fragment ( country rock) that becomes enveloped in a larger rock during the latter's development and solidification. In geology, the term ''xenolith'' is almost exclusively used to describe inclusions in ig ...

s of peridotite. The Peridot Mesa vent is noted for the occurrence of quantities of gem quality peridot found within

lherzolite Lherzolite is a type of ultramafic igneous rock. It is a coarse-grained rock consisting of 40 to 90% olivine along with significant orthopyroxene and lesser amounts of calcic chromium-rich clinopyroxene. Minor minerals include chromium and alu ...

xenolith nodules.

Notable Vents

References

{{DEFAULTSORT:San Carlos volcanic field Volcanic fields of Arizona Landforms of Graham County, Arizona Monogenetic volcanic fields Neogene volcanism Pleistocene volcanism

Notable Vents

See also

References