We followed Dysart for another .7 miles then turned onto Toothater for the last part of the loop - another 1.2 miles. 195, 61 p. Named for high-grade gneisses exposed in the western South Mountains and the Sierra Estrella, Maricopa Co, AZ in the Southwestern Basin-and-Range region. The southwestern half of the South Mountains is composed of Precambrian Komatke Granite and Estrella Gneiss (Reynolds, 1985), both of which are lithologically similar to foliated granitic and gneissic rocks in the Sierra Estrella. Much of the range falls within the Gila River Indian Reservation, but 14,400 acres (5,800 ha) of BLM land is protected as the Sierra Estrella Wilderness. Bring your curiosities and questions to Usery Park and discover lots of amazing things about our local geology! The Sierra Estrella rise sharply from the desert floor, and tower over 3,000' above the Gila Valley. Mineral assemblages indicative of upper amphibolite-facies metamorphism. Pegmatites can be rich sources of gemstones and other valuable minerals, but this one is not -- we have looked! List of minerals arranged by Strunz 10th Edition classification The extreme elevation change results in a traditional desert terrain at the base with saguaro, cholla, paloverde, and ocotillo, while higher elevations feature shrub live oak and junipers. 4, p. 283-286. The western half of the range is underlain by Precambrian metamorphic and granitic rocks, whereas the eastern half is primarily a composite middle Tertiary pluton. document archiving, management and discovery. You can reach one of the region’s main villages, Manteigas, via several routes; the most scenic way is from Covilhã, where the road rises steeply through pine forests before reaching a boulder-topped plateau. The wide river terraces to the west are deeply trenched by arroyos. Small protected areas on top the mountains have shrub-like oak and juniper. Age modified from Middle Proterozoic to Early Proterozoic, (using the data of Reynolds, 1985) in the Southwestern Basin-and-Range region of Maricopa Co, central AZ. A herd of desert bighorn sheep roam the mountains and Gila monster, desert tortoise, mountain lion, mule deer, coyote, javelina, giant spotted whiptail lizard, golden eagle, prairie falcon and cooper’s hawk” all inhabit the slopes. The South Mountains of central Arizona are a typical, but geologically simple, metamorphic core complex. Diabasic rocks occur within the formation in several areas; these represent intrusions emplaced after the main deformation. The central Sierra Estrella is the type locality. This may be explained within brackets ([ ]). 2001: A national treasure. Users are responsible for verification of all facts and information to their own satisfaction. De verão ou de inverno, a montanha mais alta de Portugal continental é o cenário perfeito para uns dias descontraídos em contacto com a natureza.Com uma altitude máxima de 1993 metros na Torre, a Serra da Estrela é uma zona de rara beleza paisagística com desníveis montanhosos impressionantes onde podemos viver intensamente o silêncio das alturas. To the west are the prominent Muggins Mountains, and to the north the west side of the Castle Dome Mountains is conspicuous. Ever wonder about the fascinating mountains and rock formations in our area? U.S. Department of the Interior | U.S. Geological Survey Supported by the National Cooperative Geologic Mapping Program They are also located strategically between Barry Goldwater Range and Luke Air Force Base, so you draw your own conclusions, but admittedly this mountain range has a very odd feel to it. ID #10064574. TOPOGRAPHY, GEOLOGY, AND SOILS ... detailed study of geology at the South Mountains, and Demsey (1989), Reynolds and Skotnicki (1993), and ... South of Estrella Drive, generally in the Eastern Section of the Study Area, there is relatively little groundwater use. Source: GNU records (USGS DDS-6; Denver GNULEX). President Clinton declared 496,000 pristine acres of Sonoran wilderness a National Monument. Locality: Sierra Estrella Quartz Veins, Montezumas Head area, Sierra Estrella Mountains, Gila River Indian Reservation, Pinal Co., Arizona, USA Reference: MRDS database Dep. Intruded by Komatke Granite (new), South Mountains Granodiorite (new), Telegraph Pass Granite (new), and Dobbins Alaskite (new). This article presents a short summaryof the geologic history of the South Mountains. | Metadata UUID: 252032ad-937b-11df-ae28-4a34282d677f, Arizona Geological Survey Open File Reports, Geology of the Sierra Estrella, Arizona - Report, Geologic map of the Phoenix Mountains, Central Arizona, Geologic Map of Petrified Forest National Park, Arizona, Suggested Guidelines for Investigating Land Subsidence and Earth Fissure Hazards in Arizona. A reconnaissance study of the crest of the northwest-trending Sierra Estrella in central Arizona indicates that this range is composed primarily gneiss and schist with a steeply dipping, northwest-striking foliation similar to that in 1.6-1.7 b.y.-old metamorphic rocks elsewhere in Arizona. North of Estrella … The area is home to diverse and endangered species, forests of cactus, and numerous historical and archaeological sites. Accuracy is not guaranteed, and the information contained or linked on this website should not be relied on except as general information. The geology of the mountain ranges that surround Phoenix (White Tank Mountains, Sierra Estrella Mountains, McDowell Mountains) is generally similar to that of the ranges that we'll discuss here, but further to the north (Bradshaw Mountains) and east (Superstition Mountains) the story becomes different. Just west of Roll the railroad line bends southwestward toward the Gila River, which is crossed at the north end of Antelope Hill, as shown in Plate 33, B. Estrella are an unnamed peak at 1375 m in the north-central part of the range and Montezuma Peak at 1323 m. This study covers approximately 165 km2 of the Sierra Estrella. Scale 1:50,000. The Sierra Estrella (O'odham: Komaḍk, Maricopa: Vii Lyxa, Yavapai: Wi:kchasa) is a mountain range located southwest of Phoenix, Arizona. An in-depthdiscussion of the geology of the area is contained in the Arizona Bureau of Geology andMineral TechnologyBulletin 195 (in press). Funding Information 14-08-0001-A0872 This rugged desert range forms the impressive southwestern skyline of the Phoenix metro area. Geologic map.Source: GNU records (USGS DDS-6; Denver GNULEX). Slash (/) indicates name does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). GitHub In general, the mountains are forested and sparsely populated, but in some places (notably in Haiti) the great population pressure has brought about the deforestation of land for cultivation. Flickr It is a wonderful place to explore the whole year around. The Sierra Estrella Mountains feature rocky canyons and steep peaks, rising nearly 2,600 feet in just two miles. South of U.S. Highway 60 near Dromedary Peak The gneiss in the South Mountains was thought by … The basin began to form 8-15 Ma as the previous period of explosive Tertiary volcanism waned (Shafiquallah and others, 1980). Some folks call them the "Estrella Lights." FOIA age. Note Text and 1 plate. Accessibility The Serra da Estrela. (1990), AZ Geol. Located in the middle of Portugal, the Parque Natural da Serra da Estrela is easy to access. The Philippines may be viewed as a collage of metamorphic terranes, magmatic arcs, ophiolitic complexes, sedimentary basins, and a continental block of Eurasian affinity subjected to tectonic processes. Page Contact Information: Personnel Page Last Modified: Thu 06 Aug 2020 08:02:43 PM MDT, National Cooperative Geologic Mapping Program. Estrella and Whitetank Mountains to the west (Pewe, 1978). Reynolds, S.J., 1985, Geology of the South Mountains, central Arizona: Arizona Bureau of Geology and Mineral Technology Bulletin, no. We then turned onto Dysart around 2.75 miles into the hike. Instagram, USA Gov The University makes no warranties or representations of any kind, and specifically disclaims all warranties including the warranty of merchantability and fitness for a particular purpose. Of Middle Proterozoic (1.7 to 1.6 b.y.) Present also in Buckeye Hills and White Tank Mountains. Most of formation probably derived from intermediate to mafic plutonic or volcanic protoliths. Located in inland central Portugal, this beautiful area called the Serra da Estrela is in fact a protected National Park. Reynolds, S.J., Shafiqullah, Muhammad, Damon, P.E., and DeWitt, Ed, 1986, Early Miocene mylonitization and detachment faulting, South Mountains, central Arizona: Geological Society of America, Geology, v. 14, no. Mountains. A broad definition for the name suggested that would include "many exposures of high-grade metamorphic rocks south and west of Phoenix that are not easily correlated with other Precambrian formations of" AZ. Asterisk (*) indicates published by U.S. Geological Survey authors. The central Sierra Estrella is the type locality. This location was initially described by Charles Maxwell in partial fulfillment for a Master’s degree in Geology from the University of … Utah’s landscape is among the most spectacular in the world. The Sierra Estrella, or Star Mountains, are located in south-central Arizona. Former usage and, if known, replacement name given in parentheses ( ). Forms serrated ridges. Estrella Mountain Regional Park is displayed on the Avondale SE USGS quad topo map. The entire hike took us … Dysart had beautiful views of distant mountains and weaved through washes. Spinels From The Caballo Mountains Feb85 News Nuggets A fascinating spinel location occurs near Truth or Consequences in the northern Caballo Mountains. Named for high-grade gneisses exposed in the western South Mountains and the Sierra Estrella, Maricopa Co, AZ in the Southwestern Basin-and-Range region. Lee "Geology of Utah's Mountains, Peaks, and Plateaus Including descriptions of cliffs, valleys, and climate history" por William T. Parry disponible en Rakuten Kobo. Melchiorre, E.B., 1992, Geology and mineral resources of the Sierra Estrella, Maricopa County, Arizona. : Peirce, H.W. Join geology professor, A. J. Lombard, as he shares a wealth of information about the geology of the East Valley on this 1-mile interactive walk. YouTube "No current usage" (†) implies that a name has been abandoned or has fallen into disuse. It stretches for 450 kilometres from east to west across the south of the Iberian Peninsula, forming the southern border of the Meseta Central plateau and providing the watershed between the valleys of the Guadiana to the north and the west, and the Guadalquivir to the south. The South Mountains are composed of two main rock types, each of which forms approximately half of the range The maps, reports, and other information and content on this website are provided as a public service for informational purposes only. This master plan update was a collaborative process that involved the guidance and expertise of many. rocks that make up this entire group of mountains. Estrella Mountain Regional Park is located southwest of Phoenix and boasts 20,000 acres of pristine desert, mountains and a large wetland. Estrela Mountains, Portuguese Serra da Estrela (“Star Mountain Range”), highest mountains in continental Portugal.The range lies in the north-central part of the country, between the basins of the Tagus and Mondego rivers. Policies and Notices Its highest summit is 1,332 m high Bañuela. Anyone who is interested in visiting Estrella Mountain Regional Park can print the free topographic map and street map using the link above. Sierra Estrella Mountains wollastonite occurrence, Estrella Mountains, Maricopa Co., Arizona, USA : ‡Ref. Among other places, rocks which form the remains of the old land mass are to be seen at Squaw Peak, Black Mountain, the McDowell Mountains, the Sierra Estrella, and the majority of the rock forming Camelback Mountain. Estrella Mountains: This mountain range is known for a very large amount of UFO sightings. The Maricopa County Parks and Recreation Department would like to thank the Planning Team who Facebook The Sonoran Desert and views of the Sierra Estrella Mountains make for an uplifting experience. Privacy Sur. 1 TECTONICS 1.1 REGIONAL GEODYNAMIC SETTINGS 1.1.1 WESTERN PACIFIC DOMAIN 1.1.1.1 … Coffee growing is the chief agricultural activity in the highlands, occurring through most of the humid mountainous regions. Google+ The Serra da Estrela, the highest mountains of continental Portugal. At that locality the most abundant lithologies are quartzo-feldspathic gneiss, biotitic gneiss and schist, amphibolite, granitic gneiss, migmatite, and biotite-muscovite schist. Estrella Mountains (Ariz.) Kamatuck (Ariz.) Komatke (Ariz. : Mountains) Maricopa Mountains (Maricopa County and Pinal County, Ariz.) ... Proterozoic geology of the Sierra Estrella, Arizona, 1993: p. iii (Sierra Estrella of central Arizona is a rugged mountain range) Twitter Share it. 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