Portal:Arizona

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Location of Arizona

Location of Arizona

Arizona (Listeni/ɛrɪˈznə/; /ærɪˈznə/) (Navajo: Hoozdo Hahoodzo; O'odham: Alĭ ṣonak) is a state of the United States, located in the southwestern region of the country. Arizona is also part of the Western United States and of the Mountain West states. Arizona is the sixth most extensive and the 16th most populous of the 50 states. Its capital and largest city is Phoenix. The second largest city is Tucson, followed in population by eight cities of the Phoenix metropolitan area: Mesa, Glendale, Chandler, Scottsdale, Gilbert, Tempe, Peoria, and Surprise.

Arizona is the 48th state and last of the contiguous states to be admitted to the Union, having achieved statehood on February 14, 1912. Arizona is noted for its desert climate in its southern half, where there are very hot summers and quite mild winters. The northern half of Arizona also features forests of pine, Douglas fir, and spruce trees, a very large, high plateau (the Colorado Plateau) and some mountain ranges—such as the San Francisco Mountains—as well as large, deep canyons, where there is much more moderate weather for three seasons of the year, plus significant snowfalls. There are ski resorts in the areas of Flagstaff and Alpine. Arizona is one of the Four Corners states. Arizona has borders with New Mexico, Utah, Nevada, California, and Mexico, and it has one point in common with the southwestern corner of Colorado. Arizona has a 389-mile (626 km)-long international border with the Mexican states of Sonora and Baja California.

Arizona is one of the most populous landlocked states of the United States. In addition to the Grand Canyon National Park, several national forests, national parks, and national monuments are located in Arizona. About one-quarter of Arizona is federal land that serves as the home of the Navajo Nation; the Hopi tribe; the Tohono O'odham; the Apache tribe; the Yaqui peoples; and various Yuman tribes, such as the Yavapai people, the Quechan people, and the Hualapai people.

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Figure 1. A geologic cross section of the Grand Canyon.
The geology of the Grand Canyon area exposes one of the most complete sequences of rock anywhere, representing a period of nearly 2 billion years of the Earth's history in that part of North America. The major sedimentary rock layers exposed in the Grand Canyon and in the Grand Canyon National Park area range in age from 200 million to nearly 2 billion years old. Most were deposited in warm, shallow seas and near ancient, long-gone sea shores. Both marine and terrestrial sediments are represented, including fossilized sand dunes from an extinct desert.Uplift of the region started about 75 million years ago in the Laramide orogeny, a mountain-building event that is largely responsible for creating the Rocky Mountains to the east. Accelerated uplift started 17 million years ago when the Colorado Plateaus (on which the area is located) were being formed. In total these layers were uplifted an estimated 10,000 feet (3000 m) which enabled the ancestral Colorado River to cut its channel into the four plateaus that constitute this area.

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Petrified wood
Credit: Daniel Schwen

Petrified wood, such as this sample found in Petrified Forest National Park, Arizona, United States, is a fossil wood where all the organic materials have been replaced with minerals, while retaining the original structure of the wood.

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  • ... that Dwight B. Heard is credited with making Arizona's cotton industry more competitive after becoming president of the Arizona Cotton Association?

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Wayne Gretzky
Wayne Douglas Gretzky, OC is a retired Canadian professional ice hockey player and former coach and part-owner of the Phoenix Coyotes National Hockey League (NHL) team. Born and raised in Brantford, Ontario, Gretzky regularly played minor hockey at a level far above his peers. In 1978, he signed with the Indianapolis Racers of the World Hockey Association (WHA), where he briefly played before being signed by the Edmonton Oilers. When the WHA folded, the Oilers joined the NHL, where Gretzky won four Stanley Cups, nine Hart Trophies as the most valuable player, and ten Art Ross Trophies for most points in a season.Nicknamed "The Great One", Gretzky was called "the greatest player of all time" in Total Hockey: The Official Encyclopedia of the NHL. He is generally regarded as the best player in the history of the NHL, and has been called "the greatest hockey player ever" by many sportswriters, players, and coaches. Upon his retirement on April 18, 1999, he held forty regular-season records, fifteen playoff records, and six All-Star records. He is the only NHL player to total over 200 points in one season—a feat he accomplished four times. In addition, he tallied over 100 points in 15 NHL seasons, 13 of them consecutively.

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