:GeologyArizona Gold MiningThe decade-long rise in the price of gold from less than $400 per troy ounce to over $1,600 has resulted in the renewal of gold mining and increased exploration activity in Arizona.
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· One of our favorite geologic maps is the “Geologic Highway Map of Arizona” published in 2000. The map scale is 1:1,000,000. The map includes illustrated notes on the physiography, economic geology, tectonics, and generalized stratigraphic sections for northern, central, and southern Arizona.
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This year we have rebooted our periodical news magazine, Arizona Geology. It has been a work in progress – the format of the first issue released early this year was a bit rough, but we put more time and effort into laying out the Summer 2021 issue released last week.
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· A new Arizona Geology. This year we have rebooted our periodical news magazine, Arizona Geology. It has been a work in progress – the format of the first issue released early this year was a bit
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· Oddly enough, Arizona has an earth fissure season; a season when fissures are more likely to first appear or undergo renewed activity. Our Fall-Winter Arizona Geology e-Magazine presents revised earth fissure maps for parts of Cochise, Maricopa, and Pinal Counties, as well as case studies of one new (Tator Hills) and one reactivated
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· The two non-potash related permits were for obligation wells at the St Johns Gas Unit. The two plugged wells included an abandoned well drilled in 1968 at the Dineh-bi-Keyah oil field in northeastern Arizona and a stratigraphic well drilled in the Picacho Basin by
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· There were 541,000 acres leased for oil and gas in Arizona as of June 30, 2012, up from the 511,000 acres at yearend 2011. Oil and gas leases on State Trust land totaled 508,000 acres as of June 30, up from 479,000 acres in December 2011.
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· In 2015, a 250-ton rock slab threatened to crush a power plant at Glen Canyon Dam, an earthquake rattled the Phoenix metropolitan area, and the Tucson Gem, Mineral and Fossil show
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· Thirty four drilling permits were issued and 16 wells were drilled through June 30, 2012. All but three permits and one well drilled were stratigraphic tests for potash east of Holbrook. Summary of oil and gas activity in Arizona in 2011
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Arizona Mining Review is an online video magazine from the Arizona Geological Survey exploring and reviewing mining in Arizona -- its challenges and successes. From potash to copper to gold, from mineral exploration to policy development, we’ll invite experts from industry, academia, research, and politics to join us to discuss the current state and
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· George M. Colvocoresses, Colvo to friends and associates, was a respected and sought after mining engineer and metallurgist during the first half of the 20 th century. Mr. Colvocoresses graduated from Yale University in 1900 and was elected to the Mining and Metallurgical Society of America in 1914. At one time in the 1920s, he served
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· The Commission granted an application by Ridgeway Arizona Oil Corporation to drill and produce carbon dioxide and helium gas wells on 160-acre spacing units in its St Johns Gas Unit in Apache County. Producing zones to be spaced are within the Permian Supai Formation and underlying granite wash.
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11/1988 | Gold Road mine, Oatman mining district, Mohave County, Arizona | Epithermal vein textures at Gold Road mine in the Black Mountains. Gold ore is hosted in latitic andesite to dacite lava flows and
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The Arizona Geological Survey is studying the Mead Slope fault (35-s video), located on the southeastern side of Boulder Basin, Lake Mead area, Arizona, in hopes of determining the fault’s activity. This fault system is close to Hoover Dam, so understanding the history of faulting is very important for evaluating seismic hazard in the area.
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Geology of Arizona. The geology of Arizona began to form in the Precambrian. Igneous and metamorphic crystalline basement rock may have been much older, but was overwritten during the Yavapai and Mazatzal orogenies in the Proterozoic. The Grenville orogeny to the east caused Arizona to fill with sediments, shedding into a shallow sea.
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· Arizona makes up a tiny fraction of the land surface on Earth (0.2%, or 295 thousand km 2 compared to total land area of 149 million km 2 ). However, it has had a comparatively larger impact on the evolution of geologic concepts, especially in three areas of geologic inquiry: (1) porphyry copper deposits, (2) metamorphic core complexes, and
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· Our new interactive Geoheritage Tour of Southern Arizona showcases a handful of the spectacular geologic feature within easy driving distance of downtown Tucson. Geologic features and related sites – museums and mining communities-are organized under three tabs: • Within 15-mile radius of Tucson. • From 15- to 75-mile radius.
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1890 | Tiger Gold mine, Yavapai County | Miners working underground with hand tools at the Tiger Gold mine near Skull Valley. GeoSnaps-Image of the Day Geologic snapshots capturing Arizona’s geologic setting and mining history with a picture of the day from 1
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· Economic geologist Carson Richardson joined the Arizona Geological Survey (AZGS) in January 2019. State geologist Phil Pearthree interviews Carson on the future direction of AZGS’ Economic Geology program for the 48th episode of the Arizona Mining Review e-video magazine.
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The decade-long rise in the price of gold from less than $400 per troy ounce to over $1,600 has resulted in the renewal of gold mining and increased exploration activity in Arizona.
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· Phil passed away in Payson, Arizona, in Feb. 2012. In Sept. 2017, Donna Smart, Phil’s widow, donated Phil’s geologic map products and files-his life’s work-to the Arizona Geological Survey.
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· Youberg., A., 2012, Geologic map of the Thatcher 7 ½' Quadrangle, Graham County, Arizona: Arizona Geological Survey Digital Geologic Map DGM-105, scale 1:24,000. Cook, J.P., 2012, Geologic map of the Artesia 7 ½' Quadrangle and the northeastern corner of the Mt. Graham 7 ½' Quadrangle, Graham County, Arizona:
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:GeologyAZGSThe decade-long rise in the price of gold from less than $400 per troy ounce to over $1,600 has resulted in the renewal of gold mining and increased exploration activity in Arizona.
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· ‘Touring Geoheritage Sites of Flagstaff & Environs’ StoryMap highlights 30 of the most prominent geologic, archaeologic, and cultural features near Flagstaff, Arizona. A Geoheritage tour of Flagstaff & environs, northern Arizona | e-Magazine of the AZ Geological Survey
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· Kinder Morgan anticipates drilling up to 250 wells, building a pipeline and ultimately delivering 450 to 500 million cubic ft of gas a day to the Permian Basin by 2016. Ridgeway Arizona Oil Corporation drilled the discovery well for the CO 2
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· Oddly enough, Arizona has an earth fissure season; a season when fissures are more likely to first appear or undergo renewed activity. Our Fall-Winter Arizona Geology e-Magazine presents revised
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:Arizona Gold MiningArizona Gold DetectingGold Prospecting in Arizona · According to Reynolds and others (2017), the "Precambrian geologic maps of the Bradshaw Mountains, Central Arizona" represents the most significant
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W.N., and Nash, J.T., 1987, Geology and gold mineralization of the Gold Basin-Lost Basin mining districts, Mohave County, Arizona, with a section on K-Ar chronology of mineralization and igneous activity, by E.H. McKee, and a section on by J.C
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· Thirty four drilling permits were issued and 16 wells were drilled through June 30, 2012. All but three permits and one well drilled were stratigraphic tests for potash east of Holbrook. Summary of oil and gas activity in Arizona first half 2012 | Arizona Geology Magazine
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The AZGS GIS-IT team recently enhanced and launched an improved online geologic map of Arizona ( https://geomapaz.azgs.arizona.edu/ ). The geology and unit pop-up descriptions are identical to that of M-35, Geologic Map of Arizona by Richard and others (2000). This refreshed online map has several new features.
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