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Dripping Spring Quartzite
The Mesoproterozoic Dripping Spring Quartzite is a resistant, purple quartzite formation found in central and southeast Arizona, USA. It is a cliff-forming purplish unit found in the lower sections of the Apache Group, units of originally sedimentary layers, but later metamorphosed. The Apache Group is coeval with a similar aged Proterozoic sequence of eight geologic units found in the lowest geologic sequences of the Grand Canyon, the Grand Canyon Supergroup. The Apache Group, or some underlying Vishnu Basement Rocks (Ruin Granite), are prominently found in all of the Sierra Ancha range, the range being separated by faults from its neighboring Mazatzal Mountains west, and the Salt River to the south. The Apache Group extends to regions east of the Sierra Ancha, and also regionally to Globe just south-southeast, and the neighboring Dripping Spring Mountains, again just south of the Globe region. The Apache Group in descending order from youngest to oldest geologic units: :*D- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sierra Ancha Cliff Dwellings
The Sierra Ancha Cliff Dwellings are a series of Pre-Columbian native American cliff-dwellings located in the Sierra Ancha Wilderness. They were built between 1280 and 1350, likely by the Salado people. The Sierra Ancha is home to several prominent ruin sites known as the Devil's Chasm Fortress, the Canyon Creek Ruins, the Pueblo Canyon Ruins, the Cold Springs Canyon Ruins, and the Cooper Forks Canyon Ruins. Collectively they have been called the Cherry Creek Ruins. See also * Cliff Palace Cliff Palace is the largest cliff dwelling in North America. The structure built by the Ancestral Puebloans is located in Mesa Verde National Park in their former homeland region. The cliff dwelling and park are in Montezuma County, in the sout ... * Montezuma's Castle * Cherry Creek Campaign * List of the oldest buildings in Arizona References {{Cliff dwellings Cliff dwellings Ancient Puebloan archaeological sites in Arizona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coeval
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Geologic Formations Of Arizona
Geology () is a branch of natural science concerned with Earth and other astronomical objects, the features or rocks of which it is composed, and the processes by which they change over time. Modern geology significantly overlaps all other Earth sciences, including hydrology, and so is treated as one major aspect of integrated Earth system science and planetary science. Geology describes the structure of the Earth on and beneath its surface, and the processes that have shaped that structure. It also provides tools to determine the relative and absolute ages of rocks found in a given location, and also to describe the histories of those rocks. By combining these tools, geologists are able to chronicle the geological history of the Earth as a whole, and also to demonstrate the age of the Earth. Geology provides the primary evidence for plate tectonics, the evolutionary history of life, and the Earth's past climates. Geologists broadly study the properties and processes of E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Precambrian United States
The Precambrian (or Pre-Cambrian, sometimes abbreviated pꞒ, or Cryptozoic) is the earliest part of Earth's history, set before the current Phanerozoic Eon. The Precambrian is so named because it preceded the Cambrian, the first period of the Phanerozoic Eon, which is named after Cambria, the Latinised name for Wales, where rocks from this age were first studied. The Precambrian accounts for 88% of the Earth's geologic time. The Precambrian is an informal unit of geologic time, subdivided into three eons (Hadean, Archean, Proterozoic) of the geologic time scale. It spans from the formation of Earth about 4.6 billion years ago ( Ga) to the beginning of the Cambrian Period, about million years ago ( Ma), when hard-shelled creatures first appeared in abundance. Overview Relatively little is known about the Precambrian, despite it making up roughly seven-eighths of the Earth's history, and what is known has largely been discovered from the 1960s onwards. The Precambrian fossil re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesoproterozoic Geology
The Mesoproterozoic Era is a geologic era that occurred from . The Mesoproterozoic was the first era of Earth's history for which a fairly definitive geological record survives. Continents existed during the preceding era (the Paleoproterozoic), but little is known about them. The continental masses of the Mesoproterozoic were more or less the same ones that exist today, although their arrangement on the Earth's surface was different. Major events and characteristics The major events of this era are the breakup of the Columbia supercontinent, the formation of the Rodinia supercontinent, and the evolution of sexual reproduction. This era is marked by the further development of continental plates and plate tectonics. The supercontinent of Columbia broke up between 1500 and 1350 million years ago, and the fragments reassembled into the supercontinent of Rodinia around 1100 to 900 million years ago, on the time boundary between the Mesoproterozoic and the subsequent Neoproterozoic. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scanlon Conglomerate
Scanlon is an Anglicized form of the Irish Gaelic name Ó Scannláin, meaning descendant of Scannlán’. Notable people with the name include: * Agnes Scanlon (1923–2018), American politician * Albert Scanlon (1935–2009), English soccer player * Angela Scanlon (born 1983), Irish broadcaster * Arthur Garrett Scanlon (aka Butch Scanlon) (1890–1945), American football coach * Bill Scanlon (1956–2021), American tennis player * Bridget Scanlon (born 1959), Irish-American hydrogeologist * Craig Scanlon (born 1960), British musician * Dan Scanlon (born 1976), American animator, writer and storyboard artist * Denis Scanlon (born 1954), Australian rules footballer * Dewey Scanlon (1899–1944), American football coach * Eamon Scanlon (born 1954), Irish politician * Edward Scanlon (1890–fl.1914), English footballer * Eugene Scanlon (1924–1994), American politician * Eugene Scanlon Jr., American judge * Hugh Scanlon (1913–2004), Australian-born British trade unionist * I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Troy Quartzite
Troy ( el, Τροία and Latin: Troia, Hittite: 𒋫𒊒𒄿𒊭 ''Truwiša'') or Ilion ( el, Ίλιον and Latin: Ilium, Hittite: 𒃾𒇻𒊭 ''Wiluša'') was an ancient city located at Hisarlik in present-day Turkey, south-west of Çanakkale and about miles east of the Aegean Sea. It is known as the setting for the Greek myth of the Trojan War. In Ancient Greek literature, Troy is portrayed as a powerful kingdom of the Heroic Age, a mythic era when monsters roamed the earth and gods interacted directly with humans. The city was said to have ruled the Troad until the Trojan War led to its complete destruction at the hands of the Greeks. The story of its destruction was one of the cornerstones of Greek mythology and literature, featuring prominently in the ''Iliad'' and the ''Odyssey'', and referenced in numerous other poems and plays. Its legacy played a large role in Greek society, with many prominent families claiming descent from those who had fought there. In the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dripping Spring Mountains
Dripping, also known usually as beef dripping or, more rarely, as pork dripping, is an animal fat produced from the fatty or otherwise unusable parts of cow or pig carcasses. It is similar to lard, tallow and schmaltz. History It is used for cooking, especially in British cuisine, significantly so in the Midlands and Northern England, though towards the end of the 20th century dripping fell out of favour due to it being regarded as less healthy than vegetable oils such as olive or sunflower. Traditionally fish and chips were fried in beef dripping, and while this practice does continue in some places, most shops now use vegetable oils. Preparation is traditionally described as collection of the residue from meat roasts but modern production is from such residue added to boiling water with a generous amount of salt (about 2g per litre). When the stock pot is chilled a solid lump of dripping (the cake) settles. The stock pot should be scraped clean and re-chilled for future use. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt River (Arizona)
The Salt River (Spanish: , O'odham ima , Yavapai: or , Maricopa language: Va Shly’ay) is a river in Gila and Maricopa counties in Arizona, United States, that is the largest tributary of the Gila River. The river is about 200 miles (320 km) long.Calculated with Google Maps and Google Earth Its drainage basin is about 13,700 square miles (35,000 km2) large. The longest of the Salt River's many tributaries is the 195-mile (314 km) Verde River. The Salt's headwaters tributaries, the Black River and East Fork, increase the river's total length to about 300 miles (480 km). The name Salt River comes from the fact that the river flows over large salt deposits shortly after the merging of the White and Black Rivers. Variant names According to the Geographic Names Information System, the Salt River has also been known as: * Assumption * Black River * Blau Fluss * Blue River * Rio Asuncion * Rio Azulrio de Lasrio * Rio de la Asuncion ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mazatzal Mountains
The Mazatzal Mountains (MAH-zaht-ZAL, locally Ma-tuh-ZEL) are a mountain range in south central Arizona, about 30–45 miles northeast of the Phoenix metropolitan area. The origin of the name remains obscure but one possibility is that it is from the Nahuatl language meaning "place of the deer". The crest of the Mazatzals forms the county line between Maricopa County and Gila County. SR 87, the Beeline Highway, traverses the Mazatzals on its way to Payson. The highest peak is Mazatzal Peak at . They also include the Four Peaks, with elevation 7,659 ft, 2,334 m; a prominent mountain and landmark of the eastern Phoenix area. The Mazatzal Wilderness Area protects of the Tonto and Coconino National forests. Established in 1940 and expanded to its present size in 1984, elevations range from at Sheep Bridge in the southwest to on Mazatzal Peak. The eastern side of the wilderness consists of brush- or pine-covered mountains, sometimes broken by narrow, vertical-walled canyon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vishnu Basement Rocks
The Vishnu Basement Rocks is the name recommended for all Early Proterozoic crystalline rocks (metamorphic and igneous) exposed in the Grand Canyon region. They form the crystalline basement rocks that underlie the Bass Limestone of the Unkar Group of the Grand Canyon Supergroup and the Tapeats Sandstone of the Tonto Group. These basement rocks have also been called either the Vishnu Complex or Vishnu Metamorphic Complex. These Early Proterozoic crystalline rocks consist of metamorphic rocks that are collectively known as the ''Granite Gorge Metamorphic Suite''; sections of the Vishnu Basement Rocks contain Early Paleoproterozoic granite, granitic pegmatite, aplite, and granodiorite that have intruded these metamorphic rocks, and also, intrusive Early Paleoproterozoic ultramafic rocks.Anonymous (nd''Vishnu Basement Rocks.''U. S. Geological Survey, Reston, Virginia.Karlstrom, KE, BR Ilg, Bradley, D Hawkins, ML Williams, G Dumond, KK. Mahan, and SA Bowring, Samuel (2012) ''Vishnu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grand Canyon Supergroup
The Grand Canyon Supergroup is a Mesoproterozoic to a Neoproterozoic sequence of sedimentary strata, partially exposed in the eastern Grand Canyon of Arizona. This group comprises the Unkar Group, Nankoweap Formation, Chuar Group and the Sixtymile Formation, which overlie Vishnu Basement Rocks. Several notable landmarks of the Grand Canyon, such as the Isis Temple and Cheops Pyramid, and the Apollo Temple, are surface manifestations of the Grand Canyon Supergroup. Geology The Grand Canyon Supergroup overlies the Vishnu Basement Rocks but was never subjected to metamorphism. The units of the Supergroup were faulted and then tilted from 10 to 15 degrees.Timmons, M, KE Karlstrom, and C Dehler (1998''Grand Canyon Supergroup Six Unconformities Make One Great Unconformity A Record of Supercontinent Assembly and Disassembly''Boatman's Quarterly Review. vol. 12, no. 1, pp. 29–32. online: accessed April 2014 A section of the Unkar Group members is visible north of Grand Canyon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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