NASA Information and Satellite Image: Pinacate Mountains, http://www.biology.ed.ac.uk/research/groups/jdeacon/desertecology/pinacate.htm, http://www.desertinvasion.us/areas/pinacate_res.html, Official Pinacate y Gran Desierto de Altar Biosphere Reserve website, Global Volcanism Program: Pinacate Mountains, https://en.wikipedia.org/w/index.php?title=Pinacate_Peaks&oldid=929892691, Articles containing O'odham-language text, Articles containing Spanish-language text, Creative Commons Attribution-ShareAlike License, This page was last edited on 8 December 2019, at 22:52. Monogenetic volcanic fields of Quaternary age like this one are scattered across all the tectonically active regions of the Earth; more than fifty lie within 1000 km of Pinacate. The source vent of the eruption is Tecolote volcano (27 ± 6 ka, 40 Ar/ 39 Ar). I reconstructed the third youngest eruption in the PVF. The volcanoes here have erupted here sporadically since about 4 million years ago, probably in association with the opening of the Gulf of California. Discover (and save!) Oct 14, 2013 - This Pin was discovered by Lynn Recker. The tallest of the peaks is Cerro del Pinacate (also called Volcan Santa Clara), elevation 3,904 feet (1,190 m). This giant maar-caldera and the trachyte shield volcano on the horizon are two of the features that make what Sykes called "The Pinacate Lava Fields” extraordinary. Pinacate Volcanic Field, Mexico. Pinacate is a 1500 km oval of Lower Sonoran Desert covered with lava flows and cinders of more than 450 small volcanoes distributed across the area. Pinacate volcanism is monogenetic and has been intermittently-continuous since initiation in the early … It is dominated topographically by the Sierra Pinacate, a broad, composite volcanic pile in the southern half of the field with a maximum elevation of 1,206 m. Many of these volcanic rocks evidently are of late The Pleistocene-Holocene Pinacate volcanic field encroaches on the Gran Desierto of Sonora, Mexico. From space its a landmark at the head of the Gulf of California. The field covers an area of about 60 x 55 km and has been active less than 10,000 years ago. The Pinacate volcanic field is a roughly 55 x 60 km area containing numerous maars, tuff rings, and cinder cones. The Pinacate Volcanic Field Extraordinary basalt volcanism in Northwestern Sonora, Mexico This giant maar-caldera and the trachyte shield volcano on the horizon are two of the features that make what Sykes called "The Pinacate Lava Fields” extraordinary. Located in far northwest Sonora, Mexico, the Pinacate volcanic field comprises a 1,500 km2 area of Pleistocene lava flows with over 400 cinder cones and 8 maars. The Mexican Spanish word pinacate is derived from the Nahuatl word for the endemic desert stink beetle, pinacatl. One of the small cones, Tecolote, is unique in the world. The source vent of the eruption is Tecolote volcano (27 ± 6 ka, 40 Ar/ 39 Ar). The Gran Desierto de Altar is one of the major sub-ecoregions of the Sonoran Desert, located in the State of Sonora, in northwest Mexico.It includes the only active erg dune region in North America.The desert extends across much of the northern border of the Gulf of California, spanning more than 100 kilometres (62 mi) east to west and over 50 kilometres (31 mi) north to south. are a 30 mile wide volcanic field with many separate small volcanoes, rather than one giant volcano. Padre Eusebio Kino, founder of many Spanish missions in the Sonoran Desert, explored here in 1698 and several times later. Copyright ©2013 by Dan Lynch, geologist, beholden to nobody. 1970. Most of the round dark spots are cinder cones, and the six larger circles (many with bright sand on their floors) are a special kind of volcanic crater called maars. The volcanic cinder cone field stains the landscape of bright sand and tall dunes in the El Pinacate y Gran Desierto de Altar Biosphere Reserve. The field includes one large shield volcano and several hundred cinder cones and associated lava flows. Thumbnail Medium Original. Space Radar Image of Pinacate Volcanic Field, Mexico This spaceborne radar image shows the Pinacate Volcanic Field in the state of Sonora, Mexico, about 150 kilometers (93 miles) southeast of Yuma, Arizona. Location. The most recent volcanic activity was about 11,000 years ago. The source vent of the eruption is Tecolote volcano (27 ± 6 ka, 40Ar/39Ar). The larger circular craters seen in the image are a type of volcano known as a "maar", which erupts violently when rising magma encounters groundwater, producing highly pressurized steam that powers explosive eruptions. Tecolote appears to have melted internally but I’ll be damned if I know how. This website is my Pinacate book. Excavating a crater like the one pictured requires Herculean energies; that hole once held half a billion tons of rock and gravel that was ejected by steam explosions. There were two distinct episodes of tephra production, Tephra Unit 1 (T1)followed by Tephra Unit 2 (T2). False-color … The volcanoes in the Pinacate are monogenetic—meaning they erupt only once and each have a unique magmatic signature. The United States/Mexico border runs across the upper right corner of the image. It is a kilometer-tall Cerro (mountain) rather than Sierra (range) dotted with younger cone volcanoes like Pinacate Peak, the highest point in the field. Among the youngest lava flows of the Pinacate volcanic field, Sonora, Mexico, is a large outpouring of tholeiite, the Ives flow. Detailed Description. Pinacate volcano is a young volcanic field of maars, tuff rings, more than 500 basaltic cinder cones in the Sonoran desert in NW Mexico, a nearly unpopulated region between Arizona and the Gulf of California. NASA 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. your own Pins on Pinterest The Pinacate volcanic field is located in northwest Sonora, Mexico, and comprises a 1500 km 2 area of lava flows with over 400 scoria cones and 8 maars (Gutmann, 2007) . [5], El Pinacate y Gran Desierto de Altar Biosphere Reserve. Dan Lynch’s love affair with the Pinacate Volcanic Field – Pinacate in Stereo. The pockmarked terrain of Pinacate National Park in Mexico's Sonora Province is evidence of a violent past. This volcanic field extends over an area of nearly 600 square miles between the Gulf of California and the International Boundary, and a small part of it projects northward into Arizona. The crater rim in the center of the photo is that of Crater Elegante, a 1.6-km-wide maar. The Biosphere Reserve contains young volcanoes, basalt lava flows, and giant maar craters on the Pinacate Volcanic field. It is a protected Biosphere Reserve and World Heritage site. Pinacate volcan cinder cones 1200+ m / 3,937 ft Northwestern Mexico, 31.77°N / -113.5°W Condition actuelle : normal / en sommeil (1 sur 5) | Reports Pinacate livres [ afficher la carte Determining the 40 Ar/ 39 Ar ages of young basaltic volcanic rocks is complicated by many factors, including the possible presence of excess argon and low potassium content. The crater rim in the center of the photo is that of Crater Elegante, a 1.6-km-wide maar. Pinacate National Park and Biosphere Reserve is a 770-square-mile (2,000-square-kilometer) volcanic field in the Sonora province of Mexico, near the Arizona border. The Pinacate Desert is home to the largest sand dunes of the Americas. Image is centered at 31.84˚N, 113.47˚W. These magmas were evolved from basalt by fractional crystallization and constitute the entire alkaline rock series from basalt to trachyte. Pinacate volcano is a young volcanic field of maars, tuff rings, more than 500 basaltic cinder cones in the Sonoran desert in NW Mexico, a nearly unpopulated region between Arizona and the Gulf of California. Most of the rock fell into the space formerly occupied by gravel beneath the flows. The shield Volcan Santa Clara is the largest volcano in the field and is pimpled with smaller cinder cones. In addition, there are a number of maar volcanoes, the most prominent of which is the Elegante Crater. The field comprises 2,000 km2 of basaltic volcanic rocks. In 1981, Dan Lynch completed his Ph.D. dissertation, "Genesis and Geochronology of Alkaline Volcanism in the Pinacate Volcanic Field, Northwestern Sonora, Mexico" at the University of Arizona. At its core lies the Sierra Pinacate, a central massif of old lava flows that is mantled with and surrounded by younger flows and cinder cones. [4], The El Pinacate y Gran Desierto de Altar Biosphere Reserve is a biosphere reserve, in the spanish language 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. The Pinacate Peaks (Sierra Pinacate, O'odham: Cuk Doʼag) are a group of volcanic peaks and cinder cones located mostly in the Mexican state of Sonora along the international border adjacent to the U.S. state of Arizona, surrounded by the vast sand dune field of the Gran Desierto de Altar, at the desert's southeast.[1]. P-47415 September 19, 1996 This spaceborne radar image shows the Pinacate Volcanic Field in the state of Sonora, Mexico, about 150 kilometers (93 miles) southeast of Yuma, Arizona. Strong sulfur fumarole activity followed the bomb eruption, indurating some of the bomb-covered surfaces solidly enough to hold vertical scarps when the cone melted and the surface cracked apart along a profusion of faults. Pinacate has three giants that rival anything in Africa as well as a bunch of smaller ones. NOTE: In a previous version of this post, I featured the EO-1 ALI image below, and an astute reader pointed out that these peaks, while in the Biosphere Reserve, are not Pinacate Peaks, but rather the Sierra de Rosario range nearby. The trachyte shield could be called a point-source volcano because its low viscosity magmas seem to have erupted through a small summit conduit system and flowed easily outward and downslope to build a volcanic shield. The field today is part of El Pinacate and Gran Desierto de Altar Biosphere Reserve and is a UNESCO World Heritage Site. The field is prominent in satellite photos of this arid region of NW México near the head of the Gulf of California. El Pinacate Volcanic Field (PVF) is located on the NNW region of Sonora, Mexico, and it consists on older lava flows, covered and surrounded by some cinder cones and younger lava flows, result of two different volcanic events, the older one, the event Pre Pinacate (Miocene) and the younger one Pinacate (Quaternary). Pinacate is a “monogenetic volcanic field,” the most common kind of Quaternary volcanism on earth. More than 300 volcanic vents occur in the Pinacate field, including cinder cones that experienced small eruptions as recently as 1934. Tecolote volcano, Pinacate volcanic field (Sonora, Mexico): A case of highly explosive basaltic volcanism and shifting eruptive styles April 2019 Journal of Volcanology and Geothermal Research 379 Pinacate is a monogenic volcanic field in Sonora, Mexico that lies just south of the Arizona border, seventy miles east of where the Colorado River empties into the Sea of Cortez. Crater Elegante: a maar volcano in the Quaternary Pinacate volcanic field on the Arizona-Mexico frontier. Cover: The Pinacate volcanic field as imaged by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar (SIR-C/X-SAR) carried onboard the space shuttle Endeavour on April 18, 1994. The United States/Mexico border runs across the upper right corner of the image. Here we reconstruct one of the youngest eruptions in the Pinacate volcanic field (Sonora, Mexico) and estimate the volumes of the lava flows, scoria cone, and tephra units. Much of its surface is covered with bombs of sizes that rival the giants of Germany’s Eifel District. [2], A variety of flora and fauna occur in the Pinacate Mountains, including the sculptural Elephant Tree, Bursera microphylla.[3]. This booklet is your field guide to the geology of these splendid desert landscapes. English: The Pinacate volcanic field is a roughly 55 x 60 km area containing numerous maars, tuff rings, and cinder cones in NW México near the head of the Gulf of California. While a milestone that was not the culmination of his love affair with the Pinacate volcanic field. The field covers 1800 km2 of desert. Pinacate Volcano Field (Public domain.) Volcanic Field James T. Gutmann The Pinacate is a special place thanks largely to its geology. The Spanish name for the Pinacate Peaks geographic feature is the Sierra Pinacate, which is used in their homeland of Mexico. The Pinacates (the name means stink bug!) 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