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___ Reference Maps of Oklahoma (OK)
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Oklahoma is one of the 50 federal states of the United States of America.
The landlocked state is located near the geographical center of the 48 contiguous states, in the southwestern central mainland. The state is bounded in northwest by Colorado, in the north by Kansas, in east by Missouri and Arkansas, west of the panhandle by New Mexico, and in the west and south by Texas.
In 1803, most of the state was acquired from the French as part of the Louisiana Purchase. Statehood since 16th November 1907, as the 46th state.
area of 181,195 km² (69,898 sq mi),  it is about the same size as Cambodia or somewhat smaller than twice the size of Portugal. Compared with other US states, Oklahoma is 8 times larger as New Jersey, but it would fit into Texas almost 4 times.
Oklahoma's landscape gradually rises from the low wetlands of the south east to the high plains of its western boundary.
The western part of its area lies in the southern Great Plains. The Ozark Mountains with the Springfield Plateau extend into the north eastern portion of the state.
South of the Ozarks is the Arkansas River Valley which separates the Ozark Plateau from the sandstone ridges of the Ouachita Mountains in the Ouachita Fold and Thrust Belt, part of the U.S. Interior Highlands.
Oklahoma's Geographical Regions
The Sooner State has a piece of almost every major geographical region of the South Central United States.
1. Oklahoma's panhandle in west is on an almost treeless, semi-arid, elevated plain known as the High Plains, a subregion of the much larger Great Plains of the Central United States. In the High Plains there is the state's highest point, known as the Black Mesa at 1516 m (4,973 ft ).
2. To the east of the High Plains are the Gypsum Hills, a semi-arid region in central Kansas and western Oklahoma, the landscape offers areas of mixed-grass prairie and gypsum outcrops, rolling hills, mesas, canyons, buttes, caves, and – sand dunes in Little Sahara.
3. East of the Gypsum Hills expands the Red Bed Plains, a region extending north/south through the middle of the state. The area offers flat plains and gently rolling hills made of stratified rocks, layered deposits of shale, sandstone and red mudstone, it is Oklahoma's largest region.
4. Within the south western portion of the Red Bed Plains rise the Wichita Mountains, rocky promontories and rounded hills made of red and black igneous rocks (cooled lava, granite and rhyolite). The Wichita Mountains National Wildlife Refuge is one of the oldest managed wildlife facility in the United States.
Image: Todd Morris
5. To the east of the Red Bed Plains is the area of the Sandstone Hills, a region of gently rolling hills, cut by steep-walled canyons, and bordered in south by the Arbuckle Mountains.
6. To the south of the Sandstone Hills are the ancient Arbuckle Mountains, a worn out, folded, and faulted mountain range which rises about 180 m to 210 m (600 to 700 ft) above the plains. Erosion has sculpted some bizarre rock formations in this area and open pit mining and quarries create patches of moonscape. The mountains are composed of very old bedrock and many layers of sedimentary rocks (dolomitic limestone). Turner Falls, a 23 m (77 ft) cascade on Honey Creek within the Arbuckle Mountains, is a popular tourist destination.
7. The Prairie Plains between the Sandstone Hills and the Ozark Plateau is predominantly an agricultural region, but It is in this region, especially in the Arkoma Basin, where oil and natural gas is produced. The Prairie Plains and the Arkansas River Valley are also the areas with the most coal mining in the state.
8. The fertile Red River Plains along the Texas border are a landscape of rolling prairies interspersed with some forested hills. In this agricultural region cotton, peanuts, soybeans, and vegetables are cultivated in the sandy soil.
9. Situated between the Arkansas River Valley and the Red River Plains are the densely wooded Ouachita Mountains, a fold-and-thrust belt of southeastern Oklahoma and western Arkansas. The rugged range of large hills formed about 300 million years ago. The Ouachitas are part of the U.S. Interior Highlands, the only major mountain region between the Rockies and the Appalachians. Mt Magazine in Arkansas is with an elevation of 839 m (2,753 ft) the highest point in the Ouachitas.
10. To the north of the Ouachita Mountains across the Arkansas River Valley reaches two sections of the Ozark Plateau into Oklahoma, the Springfield Plateau and the Boston Mountains. A landscape with wooded, rolling hills, and rounded ridges separated by narrow, steep-sided valleys. Elevations range from about 200 m to 500 m (650 to 1640 ft) a.s.l.. The plateau consists of about 70 percent forest, 20 percent pasture, and 10 percent cropland. 
Oklahoma's highest point is the Black Mesa in the High Plains Region at 1516 m (4,973 ft ), no peak, just flat shortgrass prairie, the mesa (tableland) is located in the northern corner of the Oklahoma panhandle. The Black Mesa is part of a large range of mesas in the panhandle which extends into New Mexico.
Image: Alex Butterfield
Main rivers are the Arkansas River with its tributaries, the Canadian and the Cimarron Rivers. The Red River, a major tributary of the Mississippi, forms a section of Oklahoma's southern border with Texas.
Oklahoma is kind of sparsely populated, the "Sooner State" (one of its nicknames) has a population of 3.9 million people (2018 est.) ; capital and largest city is Oklahoma City, largest metro is Oklahoma City metropolitan area. Oklahoma City and Tulsa are the state's main economic centers.
Largest airports in the state are Oklahoma City's Will Rogers World Airport (IATA code: OKC), and Tulsa International Airport (IATA code: TUL).
Cities and Towns in Oklahoma
The map shows the location of following cities and towns in Oklahoma:
Largest cities in Oklahoma with a population of more than 50,000 (est. 2012):
Oklahoma City (547,000), Tulsa (384,000), Norman (107,000), Lawton (92,000), Broken Arrow (part of the Oklahoma City metro, pop. 91,000), Edmond (part of the Oklahoma City metro, pop. 78,000), Midwest City (part of the Oklahoma City metro, pop. 55,000), Moore (part of the Oklahoma City metro, pop. 51,000)
Other cities and towns:
The detailed map below is showing the US state of Oklahoma with boundaries, the location of the state capital Oklahoma City, other major cities and populated places, rivers and lakes, interstate highways, principal highways, and railroads.
You are free to use this map for educational purposes (fair use), please refer to the Nations Online Project.
Reference Map of Oklahoma
Map is based on a state map of The National Atlas of the USA.
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