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103-398: The main purpose of the foundation is to provide for the dissemination of The Urantia Book and to ensure that the text remains as unaltered as possible. It published the first copy of the book to be made available to the public in 1955. The organization maintains integrity of the text and authorizes specific translations. The Urantia Foundation was inaugurated to preserve exclusive domain over

206-679: A continental margin throughout the late Precambrian and most of the Paleozoic era. Igneous rocks injected millions of years later form a marbled network through parts of the Colorado Plateau's darker metamorphic basement. By 600 million years ago North America had been leveled off to a remarkably smooth surface. Throughout the Paleozoic Era, tropical seas periodically inundated the Colorado Plateau region. Thick layers of limestone, sandstone, siltstone, and shale were laid down in

309-552: A gunman shot congresswoman Gabby Giffords and 18 others at a gathering in Tucson. Giffords was critically wounded. The incident sparked national attention regarding incendiary political rhetoric. Three ships named USS Arizona have been christened in honor of the state, although only USS Arizona (BB-39) was so named after statehood was achieved. Arizona is in the Southwestern United States as one of

412-536: A Japanese invasion of the U.S. West Coast (which in fact materialized in the Aleutian Islands Campaign in June 1942), from 1942 to 1945, persons of Japanese descent were forced to reside in internment camps built in the interior of the country. Many lost their homes and businesses. The camps were abolished after World War   II. The Phoenix-area POW camp site for Germans was purchased after

515-528: A Spanish Franciscan , became the first European to contact Native Americans. He explored parts of the present state and made contact with native inhabitants, probably the Sobaipuri . The expedition of Spanish explorer Coronado entered the area in 1540–1542 during its search for Cíbola . Few Spanish settlers migrated to Arizona. One of the first settlers in Arizona was José Romo de Vivar . Father Kino

618-520: A channel over millions of years, and is about 277 miles (446 km) long, ranges in width from 4 to 18 miles (6 to 29 km) and attains a depth of more than 1 mile (1.6 km). Nearly two   billion years of the Earth 's history have been exposed as the Colorado River and its tributaries cut through layer after layer of sediment as the Colorado Plateau uplifted. Arizona is home to one of

721-401: A cooler, wetter climate. This increased erosion at higher elevations with the introduction of alpine glaciers while mid-elevations were attacked by frost wedging and lower areas by more vigorous stream scouring. Pluvial lakes also formed during this time. Glaciers and pluvial lakes disappeared and the climate warmed and became drier with the start of Holocene epoch. The Colorado Plateau

824-757: A divine hero to the Pima people of the Gila River Valley . It was probably considered – and rejected – for its sentimental value before Congress settled on the name "Arizona".) Brigham Young , leader of the Church of Jesus Christ of Latter-day Saints in Salt Lake City in Utah , sent Mormons to Arizona in the mid- to late 19th century. They founded Mesa , Snowflake , Heber , Safford , and other towns. They also settled in

927-403: A dry heat from 90 to 120 °F (32 to 49 °C), with occasional high temperatures exceeding 125 °F (52 °C) having been observed in the desert area. Arizona's all-time record high is 128 °F (53 °C) recorded at Lake Havasu City on June 29, 1994, and July 5, 2007; the all-time record low of −40 °F (−40 °C) was recorded at Hawley Lake on January 7, 1971. Due to

1030-675: A five-month out-and-back trip through much of the Plateau in 1776–1777. Despite having lost one arm in the American Civil War , U.S. Army Major and geologist John Wesley Powell explored the area in 1869 and 1872. Using wooden oak boats and small groups of men, the Powell Geographic Expedition charted this largely unknown region of the United States for the federal government. Construction of

1133-454: A result of uplift bending the rock units. Eroded monoclines leave steeply tilted resistant rock called a hogback and the less steep version is a cuesta. Great tension developed in the crust, probably related to changing plate motions far to the west. As the crust stretched, the Basin and Range Province broke up into a multitude of down-dropped valleys and elongate mountains. Major faults, such as

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1236-659: A seaway along the passive western edge of the continent in the early Paleozoic. At the canyon rim is the Kaibab Formation, limestone deposited in the late Paleozoic (Permian) about 270 million years ago. A 12,000-to-15,000-foot high (3,700 to 4,600 m) extension of the Ancestral Rocky Mountains called the Uncompahgre Mountains were uplifted and the adjacent Paradox Basin subsided. Almost 4 mi. (6.4 km) of sediment from

1339-608: A total metropolitan population of just over 4.7   million. The average high temperature in July, 106 °F (41 °C), is one of the highest of any metropolitan area in the United States, offset by an average January high temperature of 67 °F (19 °C), the basis of its winter appeal. Tucson , with a metro population of just over one   million, is the state's second-largest city. Located in Pima County , approximately 110 miles (180 km) southeast of Phoenix, it

1442-537: Is a physiographic and desert region of the Intermontane Plateaus , roughly centered on the Four Corners region of the southwestern United States . This plateau covers an area of 336,700 km (130,000 mi ) within western Colorado , northwestern New Mexico , southern and eastern Utah , northern Arizona , and a tiny fraction in the extreme southeast of Nevada . About 90% of the area

1545-595: Is a state in the Southwestern region of the United States , sharing the Four Corners region of the western United States with Colorado , New Mexico , and Utah . Its other neighboring states are Nevada to the northwest and California to the west. It also shares an international border with the Mexican states of Sonora and Baja California to the south and southwest. It is the 6th-largest and

1648-575: Is a volcanic structure with a history similar to that of the San Francisco Peaks: a basalt flow closer to Grants was extruded only about 3000 years ago (see El Malpais National Monument ). These young igneous rocks may record processes in the Earth's mantle that are eating away at deep margins of the relatively stable block of the Plateau. Tectonic activity resumed in Mid Cenozoic time and started to unevenly uplift and slightly tilt

1751-811: Is considered as relatively vulnerable to climate change, which can make six of Arizona`s 15 counties uninhabitable for humans by the years 2040-2060. This was the cautionary warning made by a December 2020 study released by ProPublica and Rhodium Group. Phoenix , in Maricopa County , is Arizona's capital and largest city. Other prominent cities in the Phoenix metro area include Mesa (Arizona's third largest city), Chandler (Arizona's fourth largest city), Glendale , Peoria , Buckeye , Sun City , Sun City West , Fountain Hills , Surprise , Gilbert , El Mirage , Avondale , Tempe , Tolleson and Scottsdale , with

1854-421: Is covered with dry grasslands and shrublands, open pinyon-juniper woodland , and mountain woodlands and forests. Electrical power generation is one of the major industries that takes place in the Colorado Plateau region. Most electrical generation comes from coal fired power plants. The rocks of the Colorado Plateau are a source of oil and a major source of natural gas . Major petroleum deposits are present in

1957-654: Is drained by the Colorado River and its main tributaries : the Green , San Juan , and Little Colorado . Most of the remainder of the plateau is drained by the Rio Grande and its tributaries. The Colorado Plateau is largely made up of high desert, with scattered areas of forests. In the south-west corner of the Colorado Plateau lies the Grand Canyon of the Colorado River. Much of the Plateau's landscape

2060-493: Is home to a diverse population. About one-quarter of the state is made up of Indian reservations that serve as the home of 27 federally recognized Native American tribes , including the Navajo Nation , the largest in the state and the country, with more than 300,000 citizens. Since the 1980s, the proportion of Hispanics has grown significantly owing to migration from Mexico and Central America. A substantial portion of

2163-489: Is in Arizona. The Mogollon Rim ( / ˌmoʊ gəˈyoʊn / ), a 1,998-foot (609 m) escarpment , cuts across the state's central section and marks the southwestern edge of the Colorado Plateau. In 2002, this was an area of the Rodeo–Chediski Fire , the worst fire in state history until 2011. Located in northern Arizona, the Grand Canyon is a colorful, deep, steep-sided gorge, carved by the Colorado River . The canyon

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2266-629: Is less well known for its pine-covered north-central portion of the high country of the Colorado Plateau (see Arizona Mountains forests ). Like other states of the Southwest United States, Arizona is marked by high mountains, the Colorado plateau, and mesas. Despite the state's aridity, 27% of Arizona is forest, a percentage comparable to modern-day Romania or Greece. The world's largest stand of ponderosa pine trees

2369-679: Is not a natural lake but a reservoir impounded by Glen Canyon Dam . National parks (from south to north to south clockwise): National monuments (alphabetical): Wilderness areas (alphabetical): Other notable protected areas include: Barringer Crater , Dead Horse Point State Park , Glen Canyon National Recreation Area , Goblin Valley State Park , Goosenecks State Park , the Grand Gulch Primitive Area , Kodachrome Basin State Park , Monument Valley , and

2472-671: Is one of the Seven Natural Wonders of the World and is largely contained in the Grand Canyon National Park  – one of the first national parks in the United States. President Theodore Roosevelt was a major proponent of designating the Grand Canyon area as a National Park, often visiting to hunt mountain lion and enjoy the scenery. The canyon was created by the Colorado River cutting

2575-493: Is one of the hottest cities in the United States, with an average July high of 107 °F (42 °C). For comparison, the same month's average in Death Valley is 115 °F (46 °C). The city features sunny days about 90% of the year. The Yuma Metropolitan Statistical Area has a population of 160,000. Yuma attracts many winter visitors from all over the United States. Colorado Plateau The Colorado Plateau

2678-442: Is related to the Grand Canyon in both appearance and geologic history. The nickname "Red Rock Country" suggests the brightly colored rock left bare to the view by dryness and erosion. Domes , hoodoos , fins , reefs , river narrows , natural bridges , and slot canyons are only some of the additional features typical of the Plateau. The Colorado Plateau has the greatest concentration of U.S. National Park Service (NPS) units in

2781-556: The 14th-most-populous of the 50 states. Its capital and largest city is Phoenix , which is the most populous state capital in the United States. Arizona is the 48th state and last of the contiguous states to be admitted to the Union, achieving statehood on February 14, 1912. Historically part of the territory of Alta California and Nuevo México in New Spain , it became part of independent Mexico in 1821. After being defeated in

2884-549: The Arizona Legislature enacted the Stupid Motorist Law . It is rare for tornadoes or hurricanes to occur in Arizona. Arizona's northern third is a plateau at significantly higher altitudes than the lower desert, and has an appreciably cooler climate, with cold winters and mild summers, though the climate remains semiarid to arid. Extremely low temperatures are not unknown; cold air systems from

2987-561: The Colorado Plateau ; mountain ranges (such as the San Francisco Mountains ); as well as large, deep canyons , with much more moderate summer temperatures and significant winter snowfalls. There are ski resorts in the areas of Flagstaff , Sunrise , and Tucson . In addition to the internationally known Grand Canyon National Park , which is one of the world's seven natural wonders , there are several national forests , national parks , and national monuments . Arizona

3090-479: The Four Corners states. Arizona is the sixth largest state by area , ranked after New Mexico and before Nevada . Of the state's 113,998 square miles (295,000 km ), approximately 15% is privately owned. The remaining area is public forest and parkland, state trust land and Native American reservations. There are 24 National Park Service maintained sites in Arizona, including the three national parks of Grand Canyon National Park , Saguaro National Park , and

3193-726: The Hoover Dam in the 1930s and the Glen Canyon Dam in the 1960s changed the character of the Colorado River. Dramatically reduced sediment load changed its color from reddish brown ( Colorado is Spanish for "red-colored") to mostly clear. The apparent green color is from algae on the riverbed's rocks, not from any significant amount of suspended material. The lack of sediment has also starved sand bars and beaches, but an experimental 12-day-long controlled flood from Glen Canyon Dam in 1996 showed substantial restoration. Similar floods are planned for every 5 to 10 years. One of

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3296-459: The Kingdom of Spain and its Spanish Empire in 1821, what is now Arizona became part of its Territory of Nueva California , ("New California"), also known as Alta California ("Upper California"). Descendants of ethnic Spanish and mestizo settlers from the colonial years still lived in the area at the time of the arrival of later European-American migrants from the United States. During

3399-456: The Mesozoic era the region was affected by a series of orogenies ( mountain -building events) that deformed western North America and caused a great deal of uplift. Eruptions from volcanic mountain ranges to the west buried vast regions beneath ashy debris. Short-lived rivers, lakes, and inland seas left sedimentary records of their passage. Streams, ponds and lakes produced formations such as

3502-551: The Mexican–American War (1847–1848), the U.S. Army occupied the national capital of Mexico City and pursued its claim to much of northern Mexico, including what later became Arizona Territory in 1863 and later the State of Arizona in 1912. The Treaty of Guadalupe Hidalgo (1848) specified that, in addition to language and cultural rights of the existing inhabitants of former Mexican citizens being considered as inviolable,

3605-487: The Mexican–American War , Mexico ceded much of this territory to the United States in 1848, where the area became part of the territory of New Mexico . The southernmost portion of the state was acquired in 1853 through the Gadsden Purchase . Southern Arizona is known for its desert climate, with very hot summers and mild winters. Northern Arizona features forests of pine, Douglas fir , and spruce trees;

3708-521: The O'odham name alĭ ṣonak , meaning ' small spring ' . Initially this term was applied by Spanish colonists only to an area near the silver mining camp of Planchas de Plata, Sonora . To the European settlers, the O'odham pronunciation sounded like Arissona . The area is still known as alĭ ṣonak in the O'odham language. Another possible origin is the Basque phrase haritz ona '

3811-485: The Petrified Forest National Park . Arizona is well known for its desert Basin and Range region in the state's southern portions, which is rich in a landscape of xerophyte plants such as the cactus . This region's topography was shaped by prehistoric volcanism , followed by the cooling-off and related subsidence . Its climate has exceptionally hot summers and mild winters. The state

3914-607: The Phoenix Valley (or "Valley of the Sun"), Tempe , Prescott , and other areas. The Mormons settled what became northern Arizona and northern New Mexico. At the time these areas were in a part of the former New Mexico Territory . During the nineteenth century, a series of gold and silver rushes occurred in the territory, the best known being the 1870s stampede to the silver bonanzas of Tombstone, Arizona , in southeast Arizona, also known for its legendary outlaws and lawmen. By

4017-728: The San Juan Basin of New Mexico and Colorado, the Uinta Basin of Utah, the Piceance Basin of Colorado, and the Paradox Basin of Utah, Colorado, and Arizona. The Colorado Plateau holds major uranium deposits, and there was a uranium boom in the 1950s. The Atlas Uranium Mill near Moab has left a problematic tailings pile for cleanup. As of 2019 , 10 million tons of tailings had been relocated out of an estimated 16 million tons. Major coal deposits are being mined in

4120-806: The Southern Rocky Mountains , such as the San Juan Mountains in Colorado and the La Sal Mountains in Utah, intermix into the central and southern parts of the Colorado Plateau. It is composed of six sections: As the name implies, the High Plateaus Section is, on average, the highest section. North-south trending normal faults that include the Hurricane , Sevier, Grand Wash , and Paunsaugunt separate

4223-650: The Territory of New Mexico from 1850 until the southern part of that region seceded from the Union to form the Territory of Arizona . This newly established territory was formally organized by the federal government of the Confederate States on Saturday, January 18, 1862, when President Jefferson Davis approved and signed An Act to Organize the Territory of Arizona , marking the first official use of

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4326-668: The Wasatch Line and its various faults form the province's western edge. Faults that run parallel to the Wasatch Fault that lies along the Wasatch Range form the boundaries between the plateaus in the High Plateaus Section. The Uinta Basin, Uncompahgre Uplift, and the Paradox Basin were also formed by movement along structural weaknesses in the region's oldest rock. In Utah, the province includes several higher fault-separated plateaus : Some sources also include

4429-795: The country outside the Washington, DC metropolitan area. Among its nine national parks are Grand Canyon , Zion , Bryce Canyon , Capitol Reef , Canyonlands , Arches , Black Canyon , Mesa Verde , and Petrified Forest . Among its 18 national monuments and other protected areas managed by the NPS, the United States Forest Service , and the Bureau of Land Management are Bears Ears , Rainbow Bridge , Dinosaur , Hovenweep , Wupatki , Sunset Crater Volcano , Grand Staircase–Escalante , El Malpais , Natural Bridges , Canyons of

4532-547: The pueblos of the Ancestral Puebloan culture. There are nine U.S. National Parks , a National Historical Park, nineteen U.S. national monuments and dozens of wilderness areas in the province along with millions of acres in U.S. National Forests , many state parks, and other protected lands. In fact, this region has the highest concentration of parklands in North America. Lake Powell , in foreground,

4635-841: The Ancients , Chaco Culture National Historical Park and the Colorado National Monument . This province is bounded by the Rocky Mountains in Colorado and by the Uinta Mountains and Wasatch Mountains branches of the Rockies in northern and central Utah. It is also bounded by the Rio Grande rift , Mogollon Rim , and the Basin and Range Province (at the Hurricane Fault ). Isolated ranges of

4738-477: The Basin and Range means that the Colorado Plateau receives six to sixteen inches (15 to 40 cm) of annual precipitation. Higher areas receive more precipitation and are covered in forests of pine, fir, and spruce. Though it can be said that the Plateau roughly centers on the Four Corners, Black Mesa in northern Arizona is much closer to the east–west, north–south midpoint of the Plateau Province. Lying southeast of Glen Canyon and southwest of Monument Valley at

4841-401: The Chinle, Moenave, and Kayenta in the Mesozoic era. Later a vast desert formed the Navajo and Temple Cap formations and dry near-shore environment formed the Carmel (see geology of the Zion and Kolob canyons area for details). The area was again covered by a warm shallow sea when the Cretaceous Seaway opened in late Mesozoic time. The Dakota Sandstone and the Tropic Shale were deposited in

4944-416: The Colorado Plateau in Utah, Arizona, Colorado, and New Mexico, though large coal mining projects, such as on the Kaiparowits Plateau , have been proposed and defeated politically. The ITT Power Project, eventually located in Lynndyl, Utah , near Delta, was originally suggested for Salt Wash near Capitol Reef National Park. After a firestorm of opposition, it was moved to a less controversial site. In Utah

5047-466: The Colorado Plateau region and the region to the west some 20 million years ago (as much as 3 kilometers of uplift occurred). Streams had their gradient increased and they responded by downcutting faster. Headward erosion and mass wasting helped to erode cliffs back into their fault-bounded plateaus, widening the basins in-between. Some plateaus have been so severely reduced in size this way that they become mesas or even buttes . Monoclines form as

5150-411: The Grand Staircase extend north of the Grand Canyon and are named for their color: Within these rocks are abundant mineral resources, including uranium, coal, petroleum, and natural gas. A study of the area's unusually clear geologic history (laid bare due to the arid and semiarid conditions) has greatly advanced that science. A rain shadow from the Sierra Nevada far to the west and the many ranges of

5253-436: The Hurricane Fault, developed that separate the two regions. The dry climate was in large part a rainshadow effect resulting from the rise of the Sierra Nevada further west. Yet for some reason not fully understood, the neighboring Colorado Plateau was able to preserve its structural integrity and remained a single tectonic block. A second mystery was that while the lower layers of the Plateau appeared to be sinking, overall

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5356-590: The Navajo Volcanic Field, produced about 25 million years ago. The Hopi Buttes in northeastern Arizona are held up by resistant sheets of sodic volcanic rocks, extruded about 7 million years ago. More recent igneous rocks are concentrated nearer the margins of the Colorado Plateau. The San Francisco Peaks near Flagstaff , south of the Grand Canyon , are volcanic landforms produced by igneous activity that began in that area about 6 million years ago and continued until 1064 CE, when basalt erupted in Sunset Crater National Monument . Mount Taylor , near Grants, New Mexico ,

5459-601: The Pacific Ocean during the winter and a monsoon in the summer. The monsoon season occurs toward the end of summer. In July or August, the dewpoint rises dramatically for a brief period. During this time, the air contains large amounts of water vapor . Dewpoints as high as 81   °F (27   °C) have been recorded during the Phoenix monsoon season. This hot moisture brings lightning , thunderstorms , wind, and torrential, if usually brief, downpours. These downpours often cause flash floods , which can turn deadly. In an attempt to deter drivers from crossing flooding streams,

5562-433: The Phoenix metropolitan area. Situated in pine tree forests at an elevation of about 5,500 feet (1,700 m), Prescott enjoys a much cooler climate than Phoenix, with average summer highs around 88 °F (31 °C) and winter temperatures averaging 50 °F (10 °C). Yuma is the center of the fourth-largest metropolitan area in Arizona. Located in Yuma County , it is near the borders of California and Mexico. It

5665-486: The Plateau was rising. The reason for this was discovered upon analyzing data from the USARRAY project. It was found that the asthenosphere had invaded the overlying lithosphere , as a result of an area of mantle upwelling stemming from either the disintegration of the descending Farallon Plate , or the survival of the subducted spreading center connected to the East Pacific Rise and Gorda Ridge beneath western North America, or possibly both. The asthenosphere erodes

5768-500: The Spanish term Árida Zona ' Arid Zone ' is considered a case of folk etymology . For thousands of years before the modern era, Arizona was home to many ancient Native American civilizations. Hohokam , Mogollon , and Ancestral Puebloan cultures were among those that flourished throughout the state. Many of their pueblos, cliffside dwellings, rock paintings and other prehistoric treasures have survived and attract thousands of tourists each year. In 1539, Marcos de Niza ,

5871-464: The Tushar Mountain Plateau as part of the Colorado Plateau, but others do not. The mostly flat-lying sedimentary rock units that make up these plateaus are found in component plateaus that are between 4,900 to 11,000 feet (1,500 to 3,350 m) above sea level. A supersequence of these rocks is exposed in the various cliffs and canyons (including the Grand Canyon ) that make up the Grand Staircase . Increasingly younger east–west trending escarpments of

5974-416: The book's copyright was invalid. However, this decision was upheld in the United States Court of Appeals for the Tenth Circuit , creating a circuit split as to whether the English version of the book is considered to have entered the public domain in the US as of 1983. In 2006, the international copyright on the English text expired. The Urantia Foundation placed the three blue concentric circles logo on

6077-480: The chance to take part in the flavor and activities of the "Old West". Several upscale hotels and resorts opened during this period, some of which are still top tourist draws. They include the Arizona Biltmore Hotel in central Phoenix (opened 1929) and the Wigwam Resort on the west side of the Phoenix area (opened 1936). Arizona was the site of German prisoner of war camps during World War   II and Japanese American internment camps . Because of wartime fears of

6180-478: The city in the Tucson Mountains , is the site of the world's largest collection of Saguaro cacti. The Prescott metropolitan area includes the cities of Prescott, Cottonwood , Camp Verde and many other towns in the 8,123 square miles (21,000 km ) of Yavapai County area. With 212,635 residents, this cluster of towns is the state's third largest metropolitan area. The city of Prescott (population 41,528) lies approximately 100 miles (160 km) northwest of

6283-469: The cover of The Urantia Book and has a United States trademark for that symbol. The circles are also used with foundation approval to indicate other affiliated organizations. Further reading Arizona This is an accepted version of this page Arizona ( / ˌ ær ɪ ˈ z oʊ n ə / ARR -iz- OH -nə ; Navajo : Hoozdo Hahoodzo [hoː˥z̥to˩ ha˩hoː˩tso˩] ; O'odham : Alĭ ṣonak [ˈaɭi̥ ˈʂɔnak] )

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6386-404: The good oak ' , as there were numerous Basque sheepherders in the area. A native-born Mexican of Basque ancestry established the ranchería ( small rural settlement ) of Arizona between 1734 and 1736 in the current Mexican state of Sonora . It became notable after a significant discovery of silver there around 1737. The misconception that the state's name purportedly originated from

6489-404: The interval from 20 to 31 million years: some igneous intrusions in these mountains form laccoliths , a form of intrusion recognized by Grove Karl Gilbert during his studies of the Henry Mountains . Ship Rock (also called Shiprock ), in northwestern New Mexico, and Church Rock and Agathla , near Monument Valley , are erosional remnants of potassium-rich igneous rocks and associated breccias of

6592-739: The largest deposits are in aptly named Carbon County. In Arizona the biggest operation is on Black Mesa , supplying coal to Navajo Power Plant. Perhaps the only one of its kind, a gilsonite plant near Bonanza, southeast of Vernal, Utah , mines this unique, lustrous, brittle form of asphalt, for use in "varnishes, paints,...ink, waterproofing compounds, electrical insulation,...roofing materials." This relatively high, semi-arid to arid province produces many distinctive erosional features such as arches, arroyos , canyons, cliffs, fins, natural bridges , pinnacles, hoodoos , and monoliths that, in various places and extents, have been protected. Also protected are areas of historic or cultural significance, such as

6695-401: The last engagement in the American Indian Wars , which lasted from 1775 to 1918. U.S. soldiers stationed on the border confronted Yaqui Indians who were using Arizona as a base to raid the nearby Mexican settlements, as part of their wars against Mexico. Arizona became a U.S. state on February 14, 1912, coinciding with Valentine's Day . Arizona was the 48th state admitted to the U.S. and

6798-431: The last of the contiguous states to be admitted. Cotton farming and copper mining, two of Arizona's most important statewide industries, suffered heavily during the Great Depression . But during the 1920s and even the 1930s, tourism began to develop as the important Arizonan industry it is today. Dude ranches, such as the K L Bar and Remuda in Wickenburg, along with the Flying V and Tanque Verde in Tucson, gave tourists

6901-401: The late 1880s, copper production eclipsed the precious metals with the rise of copper camps like Bisbee, Arizona , and Jerome, Arizona . The boom and bust economy of mining also left hundreds of ghost towns across the territory, but copper mining continued to prosper with the territory producing more copper than any other state by 1907, which earned Arizona the nickname "the Copper State" at

7004-418: The level of the surrounding plain. The crater itself is nearly a mile (1.6 kilometers) wide and 570 feet (170 m) deep. Arizona is one of two U.S. states, along with Hawaii, that does not observe Daylight Saving Time , though the large Navajo Nation in the state's northeastern region does. Due to its large area and variations in elevation, the state has a wide variety of localized climate conditions. In

7107-518: The lower elevations the climate is primarily desert, with mild winters and extremely hot summers. Typically, from late fall to early spring, the weather is mild, averaging a minimum of 60 °F (16 °C). November through February are the coldest months, with temperatures typically ranging from 40 to 75 °F (4 to 24 °C), with occasional frosts. About midway through February, the temperatures start to rise, with warm days, and cool, breezy nights. The summer months of June through September bring

7210-488: The lower levels of the Plateau. At the same time, as it cools, it expands and lifts the upper layers of the Plateau. Eventually, the great block of Colorado Plateau crust rose a kilometer higher than the Basin and Range. As the land rose, the streams responded by cutting ever deeper stream channels. The most well-known of these streams, the Colorado River , began to carve the Grand Canyon less than 6 million years ago. The Pleistocene epoch brought periodic ice ages and

7313-440: The most geologically intriguing features of the Colorado Plateau is its remarkable stability. Relatively little rock deformation such as faulting and folding has affected this high, thick crustal block within the last 600 million years or so, although there are some newer features such as the Waterpocket Fold of Capitol Reef (estimated 50–70 million years old). In contrast, provinces that have suffered severe deformation surround

7416-485: The most well-preserved meteorite impact sites in the world. Created around 50,000 years ago, the Barringer Meteorite Crater (better known simply as " Meteor Crater ") is a gigantic hole in the middle of the high plains of the Colorado Plateau, about 25 miles (40 km) west of Winslow . A rim of smashed and jumbled boulders, some of them the size of small houses, rises 150 feet (46 m) above

7519-462: The mountains and evaporites from the sea were deposited (see geology of the Canyonlands area for detail). Most of the formations were deposited in warm shallow seas and near-shore environments (such as beaches and swamps) as the seashore repeatedly advanced and retreated over the edge of a proto-North America (for detail, see geology of the Grand Canyon area ). The province was probably on

7622-685: The name "Territory of Arizona". The Southern territory supplied the Confederate government with men, horses, and equipment. Formed in 1862, Arizona scout companies served with the Confederate States Army during the American Civil War . Arizona has the westernmost military engagement on record during the Civil War with the Battle of Picacho Pass (1862). The Federal government declared a new U.S. Arizona Territory, consisting of

7725-601: The names "The URANTIA BOOK," "Urantia Brotherhood," "Urantia Foundation," and "Urantia Society" for at least one generation. In 1995, a United States jury trial in Arizona found that the Urantia Foundation's 1983 renewal of the book's copyright was invalid. However, that decision was overturned on appeal. In 2001, a United States jury trial in Oklahoma again found that the Urantia Foundation's 1983 renewal of

7828-583: The needs of senior citizens and attracted many retirees who wanted to escape the harsh winters of the Midwest and the Northeast . Sun City , established by developer Del Webb and opened in 1960, was one of the first such communities. Green Valley , south of Tucson, was another such community, designed as a retirement subdivision for Arizona's teachers. Many senior citizens from across the United States and Canada come to Arizona each winter and stay only during

7931-597: The north end of the Hopi Reservation, this remote coal-laden highland has about half of the Colorado Plateau's acreage north of it, half south of it, half west of it, and half east of it. The American Association of Petroleum Geologists divides the Colorado Plateau into four geologic provinces. These are: The Ancestral Puebloan People lived in the region from roughly 2000 to 700 years ago. A party from Santa Fe led by Fathers Dominguez and Escalante , unsuccessfully seeking an overland route to California, made

8034-442: The northern states and Canada occasionally push into the state, bringing temperatures below 0 °F (−18 °C) to the state's northern parts. Indicative of the variation in climate, Arizona is the state which has both the metropolitan area with the most days over 100 °F (38 °C) ( Phoenix ), and the metropolitan area in the lower 48 states with the most days with a low temperature below freezing ( Flagstaff ). Arizona

8137-483: The oldest ages recorded by these rocks fall from 1950 to 1680 million years. An erosion surface on the Vishnu Basement Rocks is covered by sedimentary rocks and basalt flows, and these rocks formed in the interval from about 1250 to 750 million years ago: in turn, they were uplifted and split into a range of fault-block mountains . Erosion greatly reduced this mountain range before the encroachment of

8240-594: The plateau. Mountain building thrust up the Rocky Mountains to the north and east and tremendous, earth-stretching tension produced the Basin and Range Province to the west and south. Sub ranges of the Southern Rocky Mountains are scattered throughout the Colorado Plateau. The Precambrian and Paleozoic history of the Colorado Plateau is best revealed near its southern end, where the Grand Canyon has exposed rocks with ages that span almost 2 billion years. The oldest rocks at river level are igneous and metamorphic and have been lumped together as Vishnu Basement Rocks ;

8343-556: The population are followers of the Roman Catholic Church and the Church of Jesus Christ of Latter-day Saints . Arizona's population and economy have grown dramatically since the 1950s because of inward migration, and the state is now a major hub of the Sun Belt . Cities such as Phoenix and Tucson have developed large, sprawling suburban areas. Many large companies, such as PetSmart and Circle K , have headquarters in

8446-496: The primarily dry climate, large diurnal temperature variations occur in less-developed areas of the desert above 2,500 ft (760 m). The swings can be as large as 83   °F (46   °C) in the summer months. In the state's urban centers, the effects of local warming result in much higher measured night-time lows than in the recent past. Arizona has an average annual rainfall of 12.7 in (323 mm), which comes during two rainy seasons, with cold fronts coming from

8549-464: The region, which acted as a rigid crustal block. The Colorado Plateau Province was uplifted largely as a single block, possibly due to its relative thickness. This relative thickness may be why compressional forces from the orogeny were mostly transmitted through the province instead of deforming it. Pre-existing weaknesses in Precambrian rocks were exploited and reactivated by the compression. It

8652-574: The sandstone is predominantly of eolian origin and locally more than 500 meters thick. The Chuska Sandstone caps the Chuska Mountains , and it lies unconformably on Mesozoic rocks deformed during the Laramide orogeny . Younger igneous rocks form spectacular topographic features. The Henry Mountains , La Sal Range , and Abajo Mountains , ranges that dominate many views in southeastern Utah, are formed about igneous rocks that were intruded in

8755-533: The section's component plateaus. This fault pattern is caused by the tensional forces pulling apart the adjacent Basin and Range Province to the west, making this section transitional. Occupying the southeast corner of the Colorado Plateau is the Datil Section. Thick sequences of mid- Tertiary to late- Cenozoic -aged lava covers this section. The development of the province has, in large part, been influenced by structural features in its oldest rocks. Part of

8858-694: The several armies fighting in Mexico. Only two significant engagements took place on U.S. soil between U.S. and Mexican forces: Pancho Villa 's 1916 Columbus Raid in New Mexico and the Battle of Ambos Nogales in 1918 in Arizona. After Mexican federal troops fired on U.S. soldiers, the American garrison launched an assault into Nogales, Mexico . The Mexicans eventually surrendered after both sides sustained heavy casualties. A few months earlier, just west of Nogales, an Indian War battle had occurred, considered

8961-462: The shallow marine waters. During times when the seas retreated, stream deposits and dune sands were deposited or older layers were removed by erosion. Over 300 million years passed as layer upon layer of sediment accumulated. It was not until the upheavals that coincided with the formation of the supercontinent Pangea began about 250 million years ago that deposits of marine sediment waned and terrestrial deposits dominate. In late Paleozoic and much of

9064-517: The start of the Cenozoic era and were accompanied by some basaltic lava eruptions and mild deformation. The colorful Claron Formation that forms the delicate hoodoos of Bryce Amphitheater and Cedar Breaks was then laid down as sediments in cool streams and lakes (see geology of the Bryce Canyon area for details). The flat-lying Chuska Sandstone was deposited about 34 million years ago;

9167-471: The state, and Arizona is home to major universities, including the University of Arizona , Arizona State University , and Northern Arizona University . The state is known for a history of conservative politicians such as Barry Goldwater and John McCain , though it has become a swing state in recent years. The state's name appears to originate from an earlier Spanish name, Arizonac , derived from

9270-513: The state. After Maricopa County did not allow them to register to vote, in 1948 veteran Frank Harrison and Harry Austin, of the Mojave-Apache Tribe at Fort McDowell Indian Reservation , brought a legal suit, Harrison and Austin v. Laveen , to challenge this exclusion. The Arizona Supreme Court ruled in their favor. Arizona's population grew tremendously with residential and business development after World War   II, aided by

9373-528: The state. In 2004, voters passed Proposition 200 , requiring proof of citizenship to register to vote. The Supreme Court of the United States struck this restriction down in 2013. In 2010, Arizona enacted SB 1070 which required all immigrants to carry immigration papers at all times, but the Supreme Court also invalidated parts of this law in Arizona v. United States in 2012. On January 8, 2011,

9476-548: The sum of $ 15   million in compensation (equivalent to $ 528,230,769.23 in 2023) be paid to the Republic of Mexico. In 1853, the U.S. acquired the land south below the Gila River from Mexico in the Gadsden Purchase along the southern border area as encompassing the best future southern route for a transcontinental railway. What is now the state of Arizona was administered by the United States government as part of

9579-456: The territory gained and lost political influence with the growth and development of the territory. Although names including "Gadsonia", "Pimeria", "Montezuma" and "Arizuma" had been considered for the territory, when 16th President Abraham Lincoln signed the final bill, it read "Arizona", and that name was adopted. ( Montezuma was not derived from the Aztec emperor, but was the sacred name of

9682-599: The time of statehood. During the first years of statehood the industry experienced growing pains and labor disputes with the Bisbee Deportation of 1917 the result of a copper miners' strike. During the Mexican Revolution from 1910 to 1920, several battles were fought in the Mexican towns just across the border from Arizona settlements. Throughout the revolution, many Arizonans enlisted in one of

9785-730: The war by the Maytag family (of major home appliance fame). It was developed as the site of the Phoenix Zoo . A Japanese-American internment camp was on Mount Lemmon , just outside the state's southeastern city of Tucson. Another POW camp was near the Gila River in eastern Yuma County . Arizona was also home to the Phoenix Indian School , one of several federal Indian boarding schools designed to assimilate Native American children into mainstream European-American culture. Children were often enrolled in these schools against

9888-423: The warm shallow waters of this advancing and retreating seaway. Several other formations were also produced but were mostly eroded following two major periods of uplift. The Laramide orogeny closed the seaway and uplifted a large belt of crust from Montana to Mexico, with the Colorado Plateau region being the largest block. Thrust faults in Colorado are thought to have formed from a slight clockwise movement of

9991-479: The western half of earlier New Mexico Territory, in Washington, D.C. , on February 24, 1863. These new boundaries would later form the basis of the state. The first territorial capital, Prescott, was founded in 1864 following a gold rush to central Arizona. The capital was later moved to Tucson, back to Prescott, and then to its final location in Phoenix in a series of controversial moves as different regions of

10094-635: The widespread use of air conditioning , which made the intensely hot summers more comfortable. According to the Arizona Blue Book (published by the Arizona Secretary of State 's office each year), the state population in 1910 was 294,353. By 1970, it was 1,752,122. The percentage growth each decade averaged about 20% in the earlier decades, and about 60% each decade thereafter. In the 1960s, retirement communities were developed. These age-restricted subdivisions catered exclusively to

10197-515: The winter months; they are referred to as snowbirds . In March 2000, Arizona was the site of the first legally binding election ever held over the internet to nominate a candidate for public office. In the 2000 Arizona Democratic Primary, under worldwide attention, Al Gore defeated Bill Bradley . Voter turnout in this state primary increased more than 500% over the 1996 primary. In the 21st century, Arizona has frequently garnered national attention for its efforts to quell illegal immigration into

10300-483: The wishes of their parents and families. Attempts to suppress native identities included forcing the children to cut their hair, to take and use English names, to speak only English, and to practice Christianity rather than their native religions. Numerous Native Americans from Arizona fought for the United States during World War   II. Their experiences resulted in a rising activism in the postwar years to achieve better treatment and civil rights after their return to

10403-529: Was along these ancient faults and other deeply buried structures that much of the province's relatively small and gently inclined flexures (such as anticlines , synclines , and monoclines ) formed. Some of the prominent isolated mountain ranges of the Plateau, such as Ute Mountain and the Carrizo Mountains , both near the Four Corners , are cored by igneous rocks that were emplaced about 70 million years ago. Minor uplift events continued through

10506-464: Was incorporated in 1877, making it the oldest incorporated city in Arizona. It is home to the University of Arizona . Major incorporated suburbs of Tucson include Oro Valley and Marana northwest of the city, Sahuarita south of the city, and South Tucson in an enclave south of downtown. It has an average July temperature of 100   °F (38   °C) and winter temperatures averaging 65   °F (18   °C). Saguaro National Park , just west of

10609-598: Was the next European in the region. A member of the Society of Jesus (" Jesuits "), he led the development of a chain of missions in the region. He converted many of the Indians to Christianity in the Pimería Alta (now southern Arizona and northern Sonora ) in the 1690s and early 18th century. Spain founded presidios ("fortified towns") at Tubac in 1752 and Tucson in 1775. When Mexico achieved its independence from

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