The Pinacate Peaks (Sierra Pinacate, ood, Cuk Doʼag) are a group of volcanic peaks and

cinder cone 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 eruption ...

s located mostly in the Mexican state of

Sonora Sonora (), officially Estado Libre y Soberano de Sonora ( en, Free and Sovereign State of Sonora), is one of the 31 states which, along with Mexico City, comprise the Federal Entities of Mexico. The state is divided into 72 municipalities; the ...

along the international border adjacent to the U.S. state of

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 ...

, surrounded by the vast sand dune field of the Gran Desierto de Altar, at the desert's southeast. The Spanish name for the ''Pinacate Peaks'' geographic feature is the Sierra Pinacate, which is used in their homeland of Mexico.

Location

The Pinacate Peaks lie just north of the fishing resort of Puerto Peñasco. The tallest of the peaks is Cerro del Pinacate (also called Volcan Santa Clara), elevation 3,904 feet (1,190 m). The

Mexican Spanish Mexican Spanish ( es, español mexicano) is the variety of dialects and sociolects of the Spanish language spoken in Mexican territory. Mexico has the largest number of Spanish speakers, with more than twice as many as in any other country in ...

word ''pinacate'' is derived from the

Nahuatl Nahuatl (; ), Aztec, or Mexicano is a language or, by some definitions, a group of languages of the Uto-Aztecan language family. Varieties of Nahuatl are spoken by about Nahua peoples, most of whom live mainly in Central Mexico and have small ...

word for the endemic desert stink beetle, ''pinacatl''.

Natural History

Geology

The volcanoes here have erupted here sporadically since about 4 million years ago, probably in association with the opening of the

Gulf of California The Gulf of California ( es, Golfo de California), also known as the Sea of Cortés (''Mar de Cortés'') or Sea of Cortez, or less commonly as the Vermilion Sea (''Mar Bermejo''), is a marginal sea of the Pacific Ocean that separates the Baja C ...

. The most recent volcanic activity was about 11,000 years ago. The Pinacate Desert is home to the largest sand

dune A dune is a landform composed of wind- or water-driven sand. It typically takes the form of a mound, ridge, or hill. An area with dunes is called a dune system or a dune complex. A large dune complex is called a dune field, while broad, f ...

s of the

Americas The Americas, which are sometimes collectively called America, are a landmass comprising the totality of North America, North and South America. The Americas make up most of the land in Earth's Western Hemisphere and comprise the New World. ...

Flora and fauna

A variety of flora and fauna occur in the Pinacate Mountains, including the sculptural Elephant Tree, ''

Bursera microphylla ''Bursera microphylla'', known by the common name elephant tree in English or 'torote' in Spanish, is a tree in genus ''Bursera''. It grows into a distinctive sculptural form, with a thickened, water-storing or caudiciform trunk. It is found in ...

''.

Human history

Padre Eusebio Kino, founder of many

Spanish missions in the Sonoran Desert The Spanish missions in the Sonoran Desert ( es, Misiones jesuíticas en el desierto de Sonora) are a series of Jesuit Catholic religious outposts established by the Spanish Catholic Jesuits and other orders for religious conversions of the ...

, explored here in 1698 and several times later.

NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeedin ...

sent astronauts here starting in 1965 for geologic training, given the similarity of the terrain to the lunar surface, and included training models of lunar surface equipment. Apollo 14's Alan Shepard and

Ed Mitchell Edward Frederick Mitchell (born 1953) is a British former television presenter, business journalist and newsreader, best known for his work with ITN. Mitchell was educated at Worthing High School for Boys and Durham University. He also worked f ...

, and

Apollo 17 Apollo 17 (December 7–19, 1972) was the final mission of NASA's Apollo program, the most recent time humans have set foot on the Moon or traveled beyond low Earth orbit. Commander Gene Cernan and Lunar Module Pilot Harrison Schmitt walke ...

's Jack Schmitt trained here in Feb. 1970.

El Pinacate y Gran Desierto de Altar Biosphere Reserve

The El Pinacate y Gran Desierto de Altar Biosphere Reserve is a biosphere reserve, in the

spanish language Spanish ( or , Castilian) is a Romance language of the Indo-European language family that evolved from colloquial Latin spoken on the Iberian peninsula. Today, it is a global language with more than 500 million native speakers, mainly in the ...

Reserva de la Biosfera el Pinacate y Gran Desierto de Altar, managed by the Mexican Federal Government's SEMARNAT - the Ministry of the Environment and Natural Resources, in collaboration with the government of the State of Sonora's IMADES agency. . accessed 7/22/2010

The reserve

Facts about the reserve: * Over * Over 400

s (caused by volcanic activity) * 9 massive volcanic craters * Remains of volcanic activity (

ash Ash or ashes are the solid remnants of fires. Specifically, ''ash'' refers to all non-aqueous, non-gaseous residues that remain after something burns. In analytical chemistry, to analyse the mineral and metal content of chemical samples, ash ...

basalt Basalt (; ) is an aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the surface of a rocky planet or moon. More than 90 ...

rock,

lava field Lava fields are large, mostly flat areas of surface or subaquatic lava flows. Such features are generally composed of highly fluid basalt lava, and can extend for tens or hundreds of miles across the underlying terrain. Morphology and str ...

s) * Over 560 plant species * 56

mammal Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur ...

species * 43

reptile Reptiles, as most commonly defined are the animals in the class Reptilia ( ), a paraphyletic grouping comprising all sauropsids except birds. Living reptiles comprise turtles, crocodilians, squamates ( lizards and snakes) and rhynchocephalia ...

species * 222

bird Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweig ...

species * 4

fish Fish are Aquatic animal, aquatic, craniate, gill-bearing animals that lack Limb (anatomy), limbs with Digit (anatomy), digits. Included in this definition are the living hagfish, lampreys, and Chondrichthyes, cartilaginous and bony fish as we ...

species.

References

External links

Official Pinacate y Gran Desierto de Altar Biosphere Reserve websiteGlobal Volcanism Program: Pinacate Mountains
{{Authority control *02 Cinder cones Natural history of Sonora Mountain ranges of Sonora Mountain ranges of the Sonoran Desert Gran Desierto de Altar Volcanoes of Sonora Volcanism of Mexico Volcanic groups Geology of Mexico Landforms of Sonora Lava fields