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Comanche Point (Grand Canyon)
Comanche Point is a summit located in the Grand Canyon, in Coconino County of northern Arizona, US. Part of the ''Palisades of the Desert'', Comanche Point is the high point on the canyon's less-visited East Rim, and is four miles north-northeast of Desert View Point, its nearest higher neighbor. Topographic relief is significant as it towers above the Colorado River in 1.5 mile. Comanche Point was named in 1900 by George Wharton James for the Comanche, a Native-American nation from the Great Plains, in keeping with a practice of naming the points on the canyon's South Rim for Native American nations. This geographical feature's name was officially adopted in 1906 by the U.S. Board on Geographic Names. According to the Köppen climate classification system, Comanche Point is located in a Cold semi-arid climate zone. On September 27, 1994, the tabloid Weekly World News ran an outlandish cover story that wreckage of a 4000-year-old UFO had been found in limestone rubble near t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arizona
Arizona is a U.S. state, state in the Southwestern United States, Southwestern region of the United States, sharing the Four Corners region of the western United States with Colorado, New Mexico, and Utah. It also borders Nevada to the northwest and California to the west, and shares Mexico-United States border, an international border with the Mexican states of Sonora and Baja California to the south and southwest. Its Capital city, capital and List of largest cities, largest city is Phoenix, Arizona, Phoenix, which is the most populous state capital and list of United States cities by population, fifth most populous city in the United States. Arizona is divided into 15 List of counties in Arizona, counties. Arizona is the list of U.S. states and territories by area, 6th-largest state by area and the list of U.S. states and territories by population, 14th-most-populous of the 50 states. It is the 48th state and last of the contiguous United States, contiguous states to be a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tribe (Native American)
In the United States, an American Indian tribe, Native American tribe, Alaska Native village, Indigenous tribe, or Tribal nation may be any current or historical tribe, band, or nation of Native Americans in the United States. Modern forms of these entities are often associated with land or territory of an Indian reservation. " Federally recognized Indian tribe" is a legal term in United States law with a specific meaning. A Native American tribe recognized by the United States government possesses tribal sovereignty, a "domestic dependent, sovereign nation" status with the U.S. federal government that is similar to that of a state in some situations, and that of a nation in others, holding a government-to-government relationship with the federal government of the United States. Legal definition in the United States The term "tribe" is defined in the United States for some federal government purposes to include only tribes that are federally recognized by the Bureau of Indi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redwall Limestone
The Redwall Limestone is an erosion-resistant, Mississippian age, cliff-former, cliff-forming geological formation that forms prominent, red-stained cliffs in the Grand Canyon. these cliffs range in height from to . It is one of the most fossiliferous formations exposed in the Grand Canyon region. Nomenclature In 1875, GilbertGilbert, G.K., 1875. ''Report upon the geology of portions of Nevada, Utah, California, and Arizona, Chapter 6.'' In Wheeler, G.M., ed., pp. 17-187, ''Report on the Geographical and Geological Explorations and Surveys West of the One Hundredth Meridian'', vol. 3. U.S. Geological and Geographical Survey, Publication of the Wheeler Survey, Washington, D.C., 681 pp. recognized and named the Redwall Limestone for the red coloration of its escarpment on either side of Grand Canyon. As originally defined by him, it included some strata younger and older than as it is currently defined. Later in 1910, DartonDarton, N. H., 1910. ''A reconnaissance of parts of nort ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mississippian (geology)
The Mississippian ( ), also known as Lower Carboniferous or Early Carboniferous, is a subperiod in the geologic timescale or a subsystem of the geologic record. It is the earlier of two subperiods of the Carboniferous period lasting from roughly 358.9 to 323.2 million years ago. As with most other geochronologic units, the rock beds that define the Mississippian are well identified, but the exact start and end dates are uncertain by a few million years. The Mississippian is so named because rocks with this age are exposed in the Mississippi Valley. The Mississippian was a period of marine transgression in the Northern Hemisphere: the sea level was so high that only the Fennoscandian Shield and the Laurentian Shield were dry land. The cratons were surrounded by extensive delta systems and lagoons, and carbonate sedimentation on the surrounding continental platforms, covered by shallow seas. In North America, where the interval consists primarily of marine limestones, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Supai Group
The Supai Group is a slope-forming sequence of mixed red beds and limestones that outcrop in the Colorado Plateau. The group was laid down during the Pennsylvanian to Lower Permian. Cliff-forming interbeds of sandstone are noticeable throughout the group. The Supai Group is quite well exposed throughout the Grand Canyon in northwest Arizona, as well as local regions of southwest Utah, such as the Virgin River valley region. Known as the ''Supai Formation'', it occurs in Arizona at Chino Point, Sycamore Canyon, and famously at Sedona as parts of Oak Creek Canyon. In the Sedona region, it is overlain by the Hermit Formation, and the colorful Schnebly Hill Formation.Jenney, J.P., and Reynolds, S. J., ''Pennsylvanian and Permian geology of Arizona''. ''Tucson, Arizona Geological Society Digest'', 17, pp. 313~347.Blakey, R.C., 2003. ''Supai Group and Hermit Formation'' in: Beus, S.S., Morales, M., eds., pp. 136–162, ''Grand Canyon Geology'', 2nd. Oxford University Press, New Y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pennsylvanian (geology)
The Pennsylvanian ( , also known as Upper Carboniferous or Late Carboniferous) is, on the International Commission on Stratigraphy, ICS geologic timescale, the younger of two period (geology), subperiods of the Carboniferous Period (or the upper of two system (stratigraphy), subsystems of the Carboniferous System). It lasted from roughly . As with most other geochronology, geochronologic units, the stratum, rock beds that define the Pennsylvanian are well identified, but the exact date of the start and end are uncertain by a few hundred thousand years. The Pennsylvanian is named after the U.S. state of Pennsylvania, where the coal Bed (geology), beds of this age are widespread. The division between Pennsylvanian and Mississippian (geology), Mississippian comes from North American stratigraphy. In North America, where the early Carboniferous beds are primarily marine limestones, the Pennsylvanian was in the past treated as a full-fledged geologic period between the Mississippian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hermit Formation
The Permian Hermit Formation, also known as the Hermit Shale, is a nonresistant unit that is composed of slope-forming reddish brown siltstone, mudstone, and very fine-grained sandstone. Within the Grand Canyon region, the upper part of the Hermit Formation contains red and white, massive, calcareous sandstone and siltstone beds that exhibit low-angle cross-bedding. Beds of dark red crumbly siltstone fill shallow paleochannels that are quite common in this formation. The siltstone beds often contain poorly preserved plant fossils. It outcrops across northwestern Arizona from the Sedona area, and it outcrops in the Grand Canyon and the western Mogollon Rim, into the Aubrey Cliffs. It forms steep slopes that are typically mostly covered by debris and colluvium derived from the overlying sedimentary strata. Nomenclature As summarized by McKee in 1982,McKee, E.D. 1982a''The Supai Group of Grand Canyon.''''U.S. Geological Survey Professional Paper.'' 1173, pp. 1-504. the sedimentar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coconino Sandstone
The Coconino Sandstone is a geologic formation (geology), formation composed of light-colored quartz arenite of Aeolian processes, eolian origin. It erodes to form conspicuous, sheer cliffs in the upper walls of Grand Canyon, as part of the Mogollon Rim to the south and east, and in many other parts of the Colorado Plateau region. The Coconino Sandstone is well known for its fossil trackways of Terrestrial animal, terrestrial invertebrates and vertebrates and Cross-bedding, large-scale cross-stratification.Middleton, L.T., D.K. Elliott, and M. Morales (2002) ''Coconino Sandstone,'' in S.S. Beus and M. Morales, eds., ''Grand Canyon Geology.'' Oxford University Press, New York. Eastward of a north–south line from Monument Creek to Fossil Creek, the Coconino Sandstone overlies and interfingers with and grades into the Schnebly Hill Formation, which is equivalent in part to the De Chelly Sandstone in Utah. In this area, it underlies the Kaibab Limestone. Further eastward, the Coc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Permian
The Permian ( ) is a geologic period and System (stratigraphy), stratigraphic system which spans 47 million years, from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.902 Mya. It is the sixth and last period of the Paleozoic Era; the following Triassic Period belongs to the Mesozoic Era. The concept of the Permian was introduced in 1841 by geologist Sir Roderick Murchison, who named it after the Perm Governorate, region of Perm in Russia. The Permian witnessed the diversification of the two groups of amniotes, the synapsids and the Sauropsida, sauropsids (reptiles). The world at the time was dominated by the supercontinent Pangaea, which had formed due to the collision of Euramerica and Gondwana during the Carboniferous. Pangaea was surrounded by the superocean Panthalassa. The Carboniferous rainforest collapse left behind vast regions of desert within the continental interior. Amniotes, which could better cope with these ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaibab Limestone
The Kaibab Limestone is a resistant cliff-forming, Permian geologic formation that crops out across the U.S. states of northern Arizona, southern Utah, east central Nevada and southeast California. It is also known as the Kaibab Formation in Arizona, Nevada, and Utah. The Kaibab Limestone forms the rim of the Grand Canyon. In the Big Maria Mountains, California, the Kaibab Limestone is highly metamorphosed and known as the Kaibab Marble. Nomenclature The Kaibab Limestone was named by Darton in 1910 for the Kaibab Plateau, which is on the north side of Grand Canyon in Coconino County, Arizona. In his definition of the Kaibab Limestone, no type locality was designated. He also designated the Kaibab Limestone as the upper formation of the Aubrey Group, a now-abandoned stratigraphic unit. In 1921, Bassler and Reeside revised Darton's work and defined the ''Harrisburg gypsiferous member'' of the Kaibab Limestone.Bassler, H., and J. B. Reeside, Jr., 1921, ''Oil prospects in Washi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unidentified Flying Object
An unidentified flying object (UFO) is an object or phenomenon seen in the sky but not yet identified or explained. The term was coined when United States Air Force (USAF) investigations into flying saucers found too broad a range of shapes reported to consider them all saucers or discs. UFOs are also known as unidentified aerial phenomena or unidentified anomalous phenomena (UAP). Upon investigation, most UFOs are Identification studies of UFOs, identified as known objects or atmospheric phenomena, while a small number remain unexplained. While unusual sightings in the sky have been reported since at least the 3rd century BC, UFOs became culturally prominent after World War II, escalating during the Space Age. Studies and investigations into UFO reports conducted by governments (such as Project Blue Book in the United States and Project Condign in the United Kingdom of Great Britain and Ireland, United Kingdom), as well as by organisations and individuals have occurred over ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weekly World News
The ''Weekly World News'' is a tabloid formerly published in a newspaper format reporting mostly fictional "news" stories in the United States from 1979 to 2007. The paper was renowned for its outlandish cover stories often based on supernatural or paranormal themes and an approach to news that verged on the satirical. Its characteristic black-and-white covers have become pop-culture images widely used in the arts. It ceased print publication in August 2007. The company has a library of 110,000+ articles and 300+ original characters. In 2009, the ''Weekly World News'' was relaunched as an online and social media publication. In July 2021, the ''Weekly World News'' announced the formation of Weekly World News Studios, to develop and produce entertainment projects based on its brand and characters. History Generoso Pope Jr. launched the ''Weekly World News'' in 1979Lori Becker"Weekly World News tabloid to close up shop" ''Palm Beach Post'', July 24, 2007 to continue using t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
