Media related to Courthouse Towers (Arches National Park) at Wikimedia Commons
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Media related to Courthouse Towers (Arches National Park) at Wikimedia Commons
|This article about a location in Utah is a stub. You can help Wikipedia by expanding it.|
Arches National Park is a national park in eastern Utah, United States. The park is adjacent to the Colorado River, 4 miles north of Utah. More than 2,000 natural sandstone arches are located in the park, including the well-known Delicate Arch, as well as a variety of unique geological resources and formations; the park contains the highest density of natural arches in the world. The park consists of 76,679 acres of high desert located on the Colorado Plateau; the highest elevation in the park is 5,653 feet at Elephant Butte, the lowest elevation is 4,085 feet at the visitor center. The park receives an average of less than 10 inches of rain annually. Administered by the National Park Service, the area was named a national monument on April 12, 1929, was redesignated as a national park on November 12, 1971; the park received more than 1.6 million visitors in 2018. The national park lies above an underground evaporite layer or salt bed, the main cause of the formation of the arches, balanced rocks, sandstone fins, eroded monoliths in the area.
This salt bed is thousands of feet thick in places, was deposited in the Paradox Basin of the Colorado Plateau some 300 million years ago when a sea flowed into the region and evaporated. Over millions of years, the salt bed was covered with debris eroded from the Uncompahgre Uplift to the northeast. During the Early Jurassic, desert conditions prevailed in the region and the vast Navajo Sandstone was deposited. An additional sequence of stream-laid and windblown sediments, the Entrada Sandstone, was deposited on top of the Navajo. Over 5,000 feet of younger sediments were deposited and have been eroded away. Remnants of the cover exist in the area including exposures of the Cretaceous Mancos Shale; the arches of the area are developed within the Entrada formation. The weight of this cover caused the salt bed below it to liquefy and thrust up layers of rock into salt domes; the evaporites of the area formed more unusual linear regions of uplift. Faulting occurred and whole sections of rock subsided into the areas between the domes.
In some places, they turned on edge. The result of one such 2,500-foot displacement, the Moab Fault, is seen from the visitor center; as this subsurface movement of salt shaped the landscape, erosion removed the younger rock layers from the surface. Except for isolated remnants, the major formations visible in the park today are the salmon-colored Entrada Sandstone, in which most of the arches form, the buff-colored Navajo Sandstone; these are visible in layer-cake fashion throughout most of the park. Over time, water seeped into the surface cracks and folds of these layers. Ice formed in the fissures and putting pressure on surrounding rock, breaking off bits and pieces. Winds cleaned out the loose particles. A series of free-standing fins remained. Wind and water attacked these fins until, in some, the cementing material gave way and chunks of rock tumbled out. Many damaged fins collapsed. Others, with the right degree of hardness and balance, survived despite their missing sections; these became the famous arches.
Although the park's terrain may appear rugged and durable, it is fragile. More than 1 million visitors each year threaten the fragile high-desert ecosystem; the problem lies within the soil's crust, composed of cyanobacteria, algae and lichens that grow in the dusty parts of the park. Factors that make Arches National Park sensitive to visitor damage include being a semiarid region, the scarce, unpredictable rainfall, lack of deep freezing, lack of plant litter, which results in soils that have both a low resistance to, slow recovery from, compressional forces such as foot traffic. Methods of indicating effects on the soil are cytophobic soil crust index, measuring of water infiltration, t-tests that are used to compare the values from the undisturbed and disturbed areas. Humans have occupied the region since the last ice age 10,000 years ago. Fremont people and Ancient Pueblo People lived in the area until about 700 years ago. Spanish missionaries encountered Ute and Paiute tribes in the area when they first came through in 1775, but the first European-Americans to attempt settlement in the area were the Mormon Elk Mountain Mission in 1855, who soon abandoned the area.
Ranchers and prospectors settled Moab in the neighboring Riverine Valley in the 1880s. Word of the beauty of the surrounding rock formations spread beyond the settlement as a possible tourist destination; the Arches area was first brought to the attention of the National Park Service by Frank A. Wadleigh, passenger traffic manager of the Denver and Rio Grande Western Railroad. Wadleigh, accompanied by railroad photographer George L. Beam, visited the area in September 1923 at the invitation of Alexander Ringhoffer, a Hungarian-born prospector living in Salt Valley. Ringhoffer had written to the railroad in an effort to interest them in the tourist potential of a scenic area he had discovered the previous year with his two sons and a son-in-law, which he called the "Devil's Garden". Wadleigh was impressed by what Ringhoffer showed him, suggested to Park Service director Stephen T. Mather that the area be made a national monument; the following year, additional support for the monument idea came from Laurence Gould, a University of Michigan graduate student studying the geology of the nearby La Sal Mountains, shown the scenic area by local physician Dr. J. W. "Doc" Williams.
A succession of government investigators examined the area, in part due to confusion
A column or pillar in architecture and structural engineering is a structural element that transmits, through compression, the weight of the structure above to other structural elements below. In other words, a column is a compression member; the term column applies to a large round support with a capital and a base or pedestal, made of stone, or appearing to be so. A small wooden or metal support is called a post, supports with a rectangular or other non-round section are called piers. For the purpose of wind or earthquake engineering, columns may be designed to resist lateral forces. Other compression members are termed "columns" because of the similar stress conditions. Columns are used to support beams or arches on which the upper parts of walls or ceilings rest. In architecture, "column" refers to such a structural element that has certain proportional and decorative features. A column might be a decorative element not needed for structural purposes. All significant Iron Age civilizations of the Near East and Mediterranean made some use of columns.
In Ancient Egyptian architecture as early as 2600 BC the architect Imhotep made use of stone columns whose surface was carved to reflect the organic form of bundled reeds, like papyrus and palm. Their form is thought to derive from archaic reed-built shrines. Carved from stone, the columns were decorated with carved and painted hieroglyphs, ritual imagery and natural motifs. Egyptian columns are famously present in the Great Hypostyle Hall of Karnak, where 134 columns are lined up in 16 rows, with some columns reaching heights of 24 metres. One of the most important type are the papyriform columns; the origin of these columns goes back to the 5th Dynasty. They are composed of lotus stems which are drawn together into a bundle decorated with bands: the capital, instead of opening out into the shape of a bellflower, swells out and narrows again like a flower in bud; the base, which tapers to take the shape of a half-sphere like the stem of the lotus, has a continuously recurring decoration of stipules.
Some of the most elaborate columns in the ancient world were those of the Persians the massive stone columns erected in Persepolis. They included double-bull structures in their capitals; the Hall of Hundred Columns at Persepolis, measuring 70 × 70 metres, was built by the Achaemenid king Darius I. Many of the ancient Persian columns are standing, some being more than 30 metres tall. Tall columns with bull's head capitals were used for porticoes and to support the roofs of the hypostylehall inspired by the ancient Egyptian precedent. Since the columns carried timber beams rather than stine, they could be taller and more widerly spaced than Egyptian ones; the Minoans used whole tree-trunks turned upside down in order to prevent re-growth, stood on a base set in the stylobate and topped by a simple round capital. These were painted as in the most famous Minoan palace of Knossos; the Minoans employed columns to create large open-plan spaces, light-wells and as a focal point for religious rituals.
These traditions were continued by the Mycenaean civilization in the megaron or hall at the heart of their palaces. The importance of columns and their reference to palaces and therefore authority is evidenced in their use in heraldic motifs such as the famous lion-gate of Mycenae where two lions stand each side of a column. Being made of wood these early columns have not survived, but their stone bases have and through these we may see their use and arrangement in these palace buildings; the Egyptians and other civilizations used columns for the practical purpose of holding up the roof inside a building, preferring outside walls to be decorated with reliefs or painting, but the Ancient Greeks, followed by the Romans, loved to use them on the outside as well, the extensive use of columns on the interior and exterior of buildings is one of the most characteristic features of classical architecture, in buildings like the Parthenon. The Greeks developed the classical orders of architecture, which are most distinguished by the form of the column and its various elements.
Their Doric and Corinthian orders were expanded by the Romans to include the Tuscan and Composite orders. Columns, or at least large structural exterior ones, became much less significant in the architecture of the Middle Ages; the classical forms were abandoned in both Byzantine architecture and the Romanesque and Gothic architecture of Europe in favour of more flexible forms, with capitals using various types of foliage decoration, in the West scenes with figures carved in relief. Furing the Romanesque period, builders continued to reuse and imitate ancient Roman columns wherever possible. Where new, the emphasis was as illustrated by twisted columns, they were decorated with mosaics. Renaissance architecture was keen to revive the classical vocabulary and styles, the informed use and variation of the classical orders remained fundamental to the training of architects throughout Baroque and Neo-classical architecture. Early columns were constructed of some out of a single piece of stone. Monolithic columns are among the heaviest stones used in architecture.
Other stone columns are created out of multiple sections of mortared or dry-fit together. In many classical sites, sectioned columns were carved with a centre hole or depression so that they could be pegged together, using stone or metal pins; the design of
Utah is a state in the western United States. It became the 45th state admitted to the U. S. on January 4, 1896. Utah is the 13th-largest by area, 31st-most-populous, 10th-least-densely populated of the 50 United States. Utah has a population of more than 3 million according to the Census estimate for July 1, 2016. Urban development is concentrated in two areas: the Wasatch Front in the north-central part of the state, which contains 2.5 million people. Utah is bordered by Colorado to the east, Wyoming to the northeast, Idaho to the north, Arizona to the south, Nevada to the west, it touches a corner of New Mexico in the southeast. 62% of Utahns are reported to be members of The Church of Jesus Christ of Latter-day Saints, making Utah the only state with a majority population belonging to a single church. This influences Utahn culture and daily life; the LDS Church's world headquarters is located in Salt Lake City. The state is a center of transportation, information technology and research, government services, a major tourist destination for outdoor recreation.
In 2013, the U. S. Census Bureau estimated. St. George was the fastest-growing metropolitan area in the United States from 2000 to 2005. Utah has the 14th highest median average income and the least income inequality of any U. S. state. A 2012 Gallup national survey found Utah overall to be the "best state to live in" based on 13 forward-looking measurements including various economic and health-related outlook metrics. A common folk etymology is that the name "Utah" is derived from the name of the Ute tribe, purported to mean "people of the mountains" in the Ute language. However, the word for people in Ute is'núuchiu' while the word for mountain is'káav', offering no linguistic connection to the words'Ute' or'Utah'. According to other sources "Utah" is derived from the Apache name "yuttahih" which means "One, Higher up" or "Those that are higher up". In the Spanish language it was said as "Yuta", subsequently the English-speaking people adapted the word "Utah". Thousands of years before the arrival of European explorers, the Ancestral Puebloans and the Fremont people lived in what is now known as Utah, some of which spoke languages of the Uto-Aztecan group.
Ancestral Pueblo peoples built their homes through excavations in mountains, the Fremont people built houses of straw before disappearing from the region around the 15th century. Another group of Native Americans, the Navajo, settled in the region around the 18th century. In the mid-18th century, other Uto-Aztecan tribes, including the Goshute, the Paiute, the Shoshone, the Ute people settled in the region; these five groups were present. The southern Utah region was explored by the Spanish in 1540, led by Francisco Vásquez de Coronado, while looking for the legendary Cíbola. A group led by two Catholic priests—sometimes called the Dominguez-Escalante Expedition—left Santa Fe in 1776, hoping to find a route to the coast of California; the expedition encountered the native residents. The Spanish made further explorations in the region, but were not interested in colonizing the area because of its desert nature. In 1821, the year Mexico achieved its independence from Spain, the region became known as part of its territory of Alta California.
European trappers and fur traders explored some areas of Utah in the early 19th century from Canada and the United States. The city of Provo, Utah was named for one, Étienne Provost, who visited the area in 1825; the city of Ogden, Utah was named after Peter Skene Ogden, a Canadian explorer who traded furs in the Weber Valley. In late 1824, Jim Bridger became the first known English-speaking person to sight the Great Salt Lake. Due to the high salinity of its waters, He thought. After the discovery of the lake, hundreds of American and Canadian traders and trappers established trading posts in the region. In the 1830s, thousands of migrants traveling from the Eastern United States to the American West began to make stops in the region of the Great Salt Lake known as Lake Youta. Following the death of Joseph Smith in 1844, Brigham Young, as president of the Quorum of the Twelve, became the effective leader of the LDS Church in Nauvoo, Illinois. To address the growing conflicts between his people and their neighbors, Young agreed with Illinois Governor Thomas Ford in October 1845 that the Mormons would leave by the following year.
Young and the first band of Mormon pioneers reached the Salt Lake Valley on July 24, 1847. Over the next 22 years, more than 70,000 pioneers settled in Utah. For the first few years, Brigham Young and the thousands of early settlers of Salt Lake City struggled to survive; the arid desert land was deemed by the Mormons as desirable as a place where they could practice their religion without harassment. The Mormon settlements provided pioneers for other settlements in the West. Salt Lake City became the hub of a "far-flung commonwealth" of Mormon settlements. With new church converts coming from the East and around the world, Church leaders assigned groups of church members as missionaries to establish other settlements throughout the West, they developed irrigation to support large pioneer populations along Utah's Wasatch front. Throughout the remainder of the 19th century, Mormon pioneers established hundreds of other settlements in Utah, Id