geology of phoenix az area

Phoenix By car, the city is approximately 150 miles (240 kilometers) north of the US-Mexico border at Sonoyta and 180 mi (290 km) north of the border at Nogales. All of this activity was likely associated with the very beginning of Basin & Range Extension, when the crust of the American Southwest began to be ripped apart due to the development of the San Andreas fault system at about 15 million years ago. http://repository.azgs.az.gov/uri_gin/azgs/dlio/1110, Geologic Map of the Phoenix Mountains, Phoenix, Arizona, Earth fissure encountered constructing Loop 202, Phoenix, AZ, Aggregate sources in the Phoenix Metro Area, Stream deposits in the Phoenix Metro area, Basalt dike Saguaro National Park East, Tucson, Arizona. Erosion of course continues today. 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. During its 6-million-year history, this field has produced more than 600 volcanoes. This unit includes regionally extensive ash-flow tuffs, such as the Peach Springs tuff of northwestern Arizona and the Apache Leap tuff east of Phoenix. See table of contents below. After the formation of these granitic rocks, there is no geologic record of what happened in the Phoenix area for over a billion years. Arizona, The Grand Canyon State, is obviously no stranger to rocks and gemstones. We therefore say that there is an unconformity that separates the ancient Proterozoic rocks from much younger volcanic and sedimentary rocks. Camelback Mountain (O'odham: Cew S-wegiom) is a mountain in Phoenix, Arizona, United States.The English name is derived from its shape, which resembles the hump and head of a kneeling camel. This granite is associated temporally with eruption of volcanic rocks in the Phoenix area, as well. Earthquakes may be rare in Arizona, but they do happen. © 2021 The Arizona Board of Regents on behalf of The University of Arizona. In fact, it can be seen from just about anywhere in the valley. The range contains two distinct sequences of Proterozoic rocks, separated by a north-northeast-trending fault or shear zone in the center of the range. Hundreds occur in and around the state each year. 36 Geology jobs available in Phoenix, AZ on Indeed.com. Competitive salary. It is most easily identified as the mountain that has all of the antennas on it. Phoenix, Arizona, U.S. Elevation 2,610.0 ft (796 m) NAVD 88[1] Prominence 1,176 ft (358 m)[2] Location Range Phoenix Mountains Coordinates 33°32′51″N 112°01′15″WCoordinates: 33°32′51″N 112°01′15″W. Limestone formed in the sea was metamorphosed by mafic intrusions. Verified employers. This area includes the Phoenix Mountain Preserve (Squaw Peak/Piestewa Peak), Camelback Mountain, the Tempe Buttes, and South Mountain, as shown in the figure below. The mountain, a prominent landmark of the Phoenix metropolitan area, is located in the Camelback Mountain Echo Canyon Recreation Area between the Arcadia neighborhood of Phoenix … Learn about the Geology of Arizona with maps, photos and expert descriptions! Geological sections Verde River-Gila River. Some prospect pits can still be seen in the area. Unconformities represent missing time in the geologic record. Apply to Analyst, Geologist, Monitor and more! The Jurassic was also a time of other structural complications. “Arizona does have earthquakes. The geologic map and report by Johnson, Reynolds and Jones (2004) can be downloaded here: http://repository.azgs.az.gov/uri_gin/azgs/dlio/1110, 520.621.2470 | 1955 East 6th Street, P.O. These rocks are most clearly exposed in the Squaw Peak (Piestewa Peak) and Dreamy Draw areas. Geologists in Phoenix on YP.com. But its head — known, appropriately enough, as the Camel's Head Formation — is composed of sedimentary rock, which forms from particles deposited on the floor of a body of water. Arizona is one of the highest caliber rockhounding states and receives visitors from all corners of the world in search of Arizona rocks, gemstones, minerals and fossils which find themselves scattered across this geologic treasure trove. Users are responsible for verification of all facts and information to their own satisfaction. South Mountain is a prominent feature of the Phoenician skyline. The oldest Proterozoic rocks are greenstones exposed (Geologists use the name Laurentia for the ancient core of North America.) First of all, thereis the notion of geologic time.We humans think in terms oflifetimes or of centuries. The buttes are composed of steeply tilted beds of … With the exception of the Grand Canyon, no other physical feature of Arizona’s landscape is more prominent than the Mogollon Rim. The geologic history of the Phoenix area begins with a sequence of metamorphic rocks that formed between 1.8 and 1.6 billion years ago. (Of course, we know generally what was happening in this area from rocks that are exposed elsewhere in the state.) 1). These include azurite, chrysocolla, and malachite. These new mountains formed so quickly that their slopes were very unstable and prone to landsliding. The Arizona Geological Survey's website hosts an interactive map of the geology of Arizona. City of Phoenix/Instagram. Geologists call this immense zone the Basin and Range Province . approximately 2000 square miles (5200 km). Reviews (602) 223-2260 Website. Accuracy is not guaranteed, and the information contained or linked on this website should not be relied on except as general information. The Precambrian terrane is composed of two rock units, Estrella Gneiss and Komatke … This area includes the Phoenix Mountain Preserve (Squaw Peak/Piestewa Peak), Camelback Mountain, the Tempe Buttes, and South Mountain, as shown in the figure below. Igneous and metamorphic crystalline basement rock may have been much older, but was overwritten during the Yavapai and Mazatzal orogenies in the Proterozoic. This unit includes regionally extensive ash-flow tuffs, such as the Peach Springs tuff of northwestern Arizona and the Apache Leap tuff east of Phoenix. Camelback Mountain is made mainly of granite, which forms via volcanic activity underground. Job email alerts. Faults in Arizona and neighboring states are capable of delivering large magnitude earthquakes that impact Arizonans,” Mike Conway, Chief of the Geologic Extension Service at the Arizona Geological Survey (AZGS) said. 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