The Great Rift Valley ( Swahili : Bonde la ufa ) is a series of contiguous geographic depressions , approximately 6,000 or 7,000 kilometres (4,300 mi) in total length, the definition varying between sources, that runs from the southern Turkish Hatay Province in Asia, through the Red Sea , to Mozambique in Southeast Africa . While the name continues in some usages, it is rarely used in geology as it is considered an imprecise merging of separate though related rift and fault systems.
48-485: This valley extends southward from Western Asia into the eastern part of Africa, where several deep, elongated lakes, called ribbon lakes , exist on the rift valley floor, Lake Malawi and Lake Tanganyika being two such examples. The region has a unique ecosystem and contains a number of Africa's wildlife parks. The term Great Rift Valley is most often used to refer to the valley of the East African Rift ,
96-517: A few thousand meters high, and can close down airports for short periods of time. These winds can last for a full day at the beginning and end of the season, and for several days during the middle of the season. The shamal is a summer northwesterly wind blowing over Iraq and the Persian Gulf states (including Saudi Arabia and Kuwait), often strong during the day, but decreasing at night. This weather effect occurs anywhere from once to several times
144-568: A series of lakes in the East African Rift valley that runs through eastern Africa from Ethiopia in the north to Malawi in the south, and includes the African Great Lakes in the south. These include some of the world's oldest lakes, deepest lakes , largest lakes by area , and largest lakes by volume . Many are freshwater ecoregions of great biodiversity , while others are alkaline "soda lakes" supporting highly specialised organisms. The Rift Valley lakes are well known for
192-624: A year. West Asia contains large areas of mountainous terrain. The Anatolian Plateau is sandwiched between the Pontus Mountains and Taurus Mountains in Turkey . Mount Ararat in Turkey rises to 5,137 m (16,854 ft). The Zagros Mountains are located in Iran, in areas along its border with Iraq. The Central Plateau of Iran is divided into two drainage basins . The northern basin
240-532: Is Dasht-e Kavir (Great Salt Desert), and Dasht-e-Lut is the southern basin. In Yemen , elevations exceed 3,700 m (12,100 ft) in many areas, and highland areas extend north along the Red Sea coast and north into Lebanon . A fault zone also exists along the Red Sea, with continental rifting creating trough -like topography with areas located well below sea level . The Dead Sea , located on
288-645: Is a geographical term with more consistency. It excludes most of Egypt and the northwestern part of Turkey , and includes the southern part of the Caucasus . West Asia covers an area of 5,994,935 km (2,314,657 sq mi), with a population of about 313 million. Of the 20 UN member countries fully or partly within the region, 13 are part of the Arab world . The most populous countries in West Asia are Iran , Turkey , Iraq , Saudi Arabia and Yemen . In
336-857: Is occupied by the Wadi Arabah , then the Gulf of Aqaba , and then the Red Sea . Off the southern tip of Sinai in the Red Sea, the Dead Sea Transform meets the Red Sea Rift which runs the length of the Red Sea. The Red Sea Rift comes ashore to meet the East African Rift and the Aden Ridge in the Afar Depression of East Africa. The junction of these three rifts is called the Afar triple junction . The East African Rift follows
384-446: The African Great Lakes . The Western Rift Valley lakes are fresh water and home to an extraordinary number of species. Approximately 1,500 cichlid fish (Cichlidae) species live in the lakes. In addition to the cichlids, populations of Clariidae , Claroteidae , Mochokidae , Poeciliidae , Mastacembelidae , Centropomidae , Cyprinidae , Clupeidae and other fish families are found in these lakes. They are also important habitats for
432-1040: The Anti-Lebanon Mountains . Further south it is known as the Hula Valley separating the Galilee mountains and the Golan Heights . The Jordan River begins here and flows southward through Lake Hula into the Sea of Galilee in Israel . The Rift then continues south through the Jordan Rift Valley into the Dead Sea on the Israeli - Jordanian border. From the Dead Sea southwards, the Rift
480-471: The Arabian Peninsula numbering more than 3 million. Christian communities have played a vital role in West Asia. Judaism is the predominant religion in Israel , and there are small ancient Jewish communities in West Asia such as in Turkey (14,300), Azerbaijan (9,100), and Iran (8,756). The Druze Faith or Druzism originated in West Asia. It is a monotheistic religion based on
528-869: The Armenian highlands , the Levant , the island of Cyprus , the Sinai Peninsula and the South Caucasus . The region is separated from Africa by the Isthmus of Suez in Egypt , and separated from Europe by the waterways of the Turkish Straits and the watershed of the Greater Caucasus . Central Asia lies to its northeast, while South Asia lies to its east. Twelve seas surround
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#1732772296932576-453: The Baháʼí Faith , Yarsanism , Yazidism , Zoroastrianism , Mandaeism , and Shabakism . The economy of West Asia is diverse and the region experiences high economic growth. Turkey has the largest economy in the region, followed by Saudi Arabia and Iran. Petroleum is the major industry in the regional economy, as more than half of the world's oil reserves and around 40 percent of
624-713: The Eastern Rift Valley . The Western Rift, also called the Albertine Rift , is bordered by some of the highest mountains in Africa, including the Virunga Mountains , Mitumba Mountains , and Ruwenzori Range . It contains the Rift Valley lakes , which include some of the deepest lakes in the world (up to 1,470 metres (4,820 ft) deep at Lake Tanganyika ). Much of this area lies within
672-446: The Gulf of Oman . The population of West Asia was estimated at 272 million as of 2008, projected to reach 370 million by 2030 by Maddison (2007; the estimate excludes the Caucasus and Cyprus). This corresponds to an annual growth rate of 1.4% (or a doubling time of 50 years), well above the world average of 0.9% (doubling time 75 years). The population of West Asia is estimated at 4% of world population , up from about 39 million at
720-750: The Jordan River , the Dead Sea and the Arabah Valley), Red Sea Rift and the East African Rift . These rifts and faults were formed 35 million years ago. The northernmost part of the Rift corresponds to the central section of what is called today the Dead Sea Transform (DST) or Rift. This midsection of the DST forms the Beqaa Valley in Lebanon, separating the Mount Lebanon range from
768-669: The Shire River , which flows from the lake into the Zambezi River. The rift continues south of the Zambezi as the Urema Valley of central Mozambique. Western Asia West Asia , also called Western Asia or Southwest Asia , is the westernmost region of Asia . As defined by most academics, UN bodies and other institutions, the subregion consists of Anatolia , the Arabian Peninsula , Iran , Mesopotamia ,
816-548: The Tigris and Euphrates rivers contribute very well. West Asia is primarily arid and semi-arid , and can be subject to drought , but it also contains vast expanses of forest and fertile valleys. The region consists of grasslands , rangelands , deserts , and mountains . Water shortages are a problem in many parts of West Asia, with rapidly growing populations increasing demands for water, while salinization and pollution threaten water supplies. Major rivers, including
864-579: The Tigris and Euphrates , provide sources for irrigation water to support agriculture . There are two wind phenomena in West Asia: the sharqi and the shamal . The sharqi (or sharki ) is a wind that comes from the south and southeast. It is seasonal, lasting from April to early June, and comes again between late September and November. The winds are dry and dusty, with occasional gusts up to 80 kilometres per hour (50 miles per hour) and often kick up violent sand and dust storms that can carry sand
912-674: The World Geographical Scheme for Recording Plant Distributions (WGSRPD), West Asia excludes the Arabian Peninsula and includes Afghanistan . The Food and Agriculture Organization (FAO) excludes Egypt and includes Afghanistan. The United Nations Environment Programme excludes Cyprus , Israel , Turkey , and Iran from West Asia. The term West Asia is used pragmatically and has no "correct" or generally accepted definition. Its typical definitions overlap substantially, but not entirely, with definitions of
960-636: The divergent plate boundary which extends from the Afar triple junction southward through eastern Africa , and is in the process of splitting the African plate into two new and separate plates. Geologists generally refer to these evolving plates as the Nubian plate and the Somali plate . Today these rifts and faults are seen as distinct, although connected, but originally, the Great Rift Valley
1008-660: The Central African lakes. Lakes Albert, Victoria, and Edward are part of the Nile River basin. Lake Victoria (elevation 1,134 metres (3,720 ft)), with an area of 68,800 square kilometres (26,600 sq mi), is the largest lake in Africa. It is not in the Rift Valley, instead occupying a depression between the eastern and western rifts formed by the uplift of the rifts to either side. Lakes Victoria, Tanganyika, and Malawi are sometimes collectively known as
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#17327722969321056-608: The Ethiopian Rift Valley lakes are of great importance to Ethiopia's economy, as well as being essential to the survival of the local people, there were no intensive and extensive limnological studies undertaken of these lakes until recently. The major ones are Lake Tana , the source of the Blue Nile , lies in the Ethiopian highlands north of the Rift Valley; however, it is not a Rift Valley lake. South of
1104-724: The Ethiopian highlands, the rift valley splits into two major troughs. The Eastern Rift is home to the Kenyan Rift Valley lakes, while most of the Central African Rift Valley lakes lie in the Western Rift. This area includes the Gregory Rift in Kenya and Tanzania. The Kenyan section of the Rift Valley is home to eight lakes, of which three are freshwater and the rest alkaline. Of the latter,
1152-681: The Red Sea to the end before turning inland into the Ethiopian highlands , dividing the country into two large and adjacent but separate mountainous regions. In Kenya, Uganda, and the fringes of South Sudan, the Great Rift runs along two separate branches that are joined to each other only at their southern end, in Southern Tanzania along its border with Zambia . The two branches are called the Western Rift Valley and
1200-471: The beginning of the 20th century, or about 2% of world population at the time. The most populous countries in the region are Turkey and Iran , each with around 79 million people, followed by Iraq and Saudi Arabia with around 33 million people each, and Yemen with around 29 million people. Numerically, West Asia is predominantly Arab , Persian , Turkish , and the dominating languages are correspondingly Arabic , Persian and Turkish , each with of
1248-686: The border between the West Bank , Israel , and Jordan , is situated at 418 m (1,371 ft) below sea level, making it the lowest point on the surface of the Earth . Rub' al Khali , one of the world's largest sand deserts, spans the southern third of the Arabian Peninsula in Saudi Arabia, parts of Oman, the United Arab Emirates and Yemen. Jebel al Akhdar is a small range of mountains located in northeastern Oman, bordering
1296-574: The boundaries of national parks such as Virunga National Park in the Democratic Republic of Congo , Rwenzori National Park and Queen Elizabeth National Park in Uganda, and Volcanoes National Park in Rwanda . Lake Victoria is considered to be part of the rift valley system although it actually lies between the two branches. All of the African Great Lakes were formed as the result of
1344-849: The boundary between the Aegean and Anatolian plate in eastern Turkey is also seismically active. Several major aquifers provide water to large portions of West Asia. In Saudi Arabia, two large aquifers of Palaeozoic and Triassic origins are located beneath the Jabal Tuwayq mountains and areas west to the Red Sea. Cretaceous and Eocene -origin aquifers are located beneath large portions of central and eastern Saudi Arabia, including Wasia and Biyadh which contain amounts of both fresh water and saline water . Flood or furrow irrigation, as well as sprinkler methods, are extensively used for irrigation , covering nearly 90,000 km (35,000 sq mi) across West Asia for agriculture. Also,
1392-488: The dominant language in Israel in the second half of the 20th century, and Neo-Aramaic (spoken by modern Arameans , Assyrians , and Chaldeans ) and Greek both remain present in their respective territories as minority languages. Significant native minorities include, in alphabetical order: Arameans , Assyrians , Chaldeans , Druze , Jews , Lurs , Mandeans , Maronites , Shabaks and Yezidis . Religion in West Asia (2020) Four major religious groups (i.e.
1440-508: The evolution of at least 800 cichlid fish species that live in their waters. More species are expected to be discovered. The World Wide Fund for Nature has designated these lakes as one of its Global 200 priority ecoregions for conservation. Lake Malawi and Lake Tanganyika have formed in the various valleys of the East African Rift zone. Lake Kivu's "still waters ... hide another face: dissolved within are billions of cubic meters of flammable methane and more still of carbon dioxide,
1488-454: The freshwater springs supplying Lake Naivasha are essential to support its current biological variety. The southern section of the Rift Valley includes Lake Malawi , the third-deepest freshwater body in the world, which reaches 706 metres (2,316 ft) in depth and separates the Nyassa plateau of Northern Mozambique from Malawi. The rift extends southwards from Lake Malawi as the valley of
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1536-665: The latter), Saudi Arabia, Syria, Turkey, UAE, and Yemen as West Asian countries. By contrast, the United Nations Industrial Development Organization (UNIDO) in its 2015 yearbook includes Armenia and Azerbaijan, and excludes Israel (as Other) and Turkey (as Europe). Unlike the UNIDO, the United Nations Statistics Division (UNSD) excludes Iran from West Asia and includes Turkey, Georgia, and Cyprus in
1584-456: The northwest and north, the region is delimited from Europe by the Turkish Straits and drainage divide of the Greater Caucasus , to the southwest, it is delimited from Africa by the Isthmus of Suez , while to the northeast and east, the region adjoins Central Asia and South Asia . The region is located east of Southern Europe and south of Eastern Europe . The Dasht-e Kavir and Dasht-e Lut deserts in eastern Iran naturally delimit
1632-525: The order of 70 million speakers, followed by smaller communities of Kurdish , Azerbaijani , Hebrew , Armenian and Neo-Aramaic . The dominance of Arabic and Turkish is the result of the medieval Arab and Turkic invasions beginning with the Islamic conquests of the 7th century AD, which displaced the formerly dominant Aramaic in the region of Syria , and Greek in Anatolia, although Hebrew became
1680-519: The part of Asia known in classical antiquity, as opposed to the reaches of "interior Asia", i.e. Scythia , and "Eastern Asia" the easternmost reaches of geographical knowledge in classical authors, i.e. Transoxania and India . In the 20th century, "Western Asia" was used to denote a rough geographical era in the fields of archaeology and ancient history , especially as a shorthand for "the Fertile Crescent excluding Ancient Egypt " for
1728-772: The purposes of comparing the early civilizations of Egypt and the former. Use of the term in the context of contemporary geopolitics or world economy appears to date from at least the mid-1960s. The region is surrounded by eight major seas; the Aegean Sea , the Black Sea , the Caspian Sea , the Persian Gulf , the Arabian Sea , the Gulf of Aden , the Red Sea , and the Mediterranean Sea . To
1776-461: The region (clockwise): the Aegean Sea , the Sea of Marmara , the Black Sea , the Caspian Sea , the Persian Gulf , the Gulf of Oman , the Arabian Sea , the Gulf of Aden , the Red Sea , the Gulf of Aqaba , the Gulf of Suez , and the Mediterranean Sea . West Asia contains the majority of the similarly defined Middle East . The Middle East is a political term that has changed many times depending on political and historical context while West Asia
1824-415: The region from Balochistan and South Asia. Three major tectonic plates converge on West Asia, including the African , Eurasian , and Arabian plates. The boundaries between the tectonic plates make up the Azores-Gibraltar Ridge , extending across North Africa , the Red Sea , and into Iran. The Arabian Plate is moving northward into the Anatolian plate (Turkey) at the East Anatolian Fault , and
1872-422: The region's sports organisations are the West Asia Basketball Association , West Asian Billiards and Snooker Federation , West Asian Football Federation , and the West Asian Tennis Federation . "Western Asia" was in use as a geographical term in the early 19th century, before " Near East " became current as a geopolitical concept. In the context of the history of classical antiquity , "Western Asia" could mean
1920-663: The region. In the United Nations geopolitical Eastern European Group , Armenia and Georgia are included in Eastern Europe, whereas Cyprus and East Thracian Turkey are in Southern Europe. These three nations are listed in the European category of the United Nations Educational, Scientific, and Cultural Organisation (UNESCO). National members of West Asian sports governing bodies are limited to Bahrain, Iran, Iraq, Jordan, Kuwait, Lebanon, Syria, Oman, Palestine, Qatar, Saudi Arabia, United Arab Emirates, and Yemen. The Olympic Council of Asia 's multi-sport event West Asian Games are contested by athletes representing these 13 countries. Among
1968-484: The result of volcanic gases seeping in." The Ethiopian Rift Valley lakes are the northernmost of the African Rift Valley lakes. In central Ethiopia , the Main Ethiopian Rift , also known as the Great Rift Valley, splits the Ethiopian highlands into northern and southern halves, and the Ethiopian Rift Valley lakes occupy the floor of the rift valley between the two highlands. Most of the Ethiopian Rift Valley lakes do not have an outlet, and most are alkaline . Although
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2016-460: The rift, and most lie in territories within the rift. In Kenya , the valley is deepest to the north of Nairobi . As the lakes in the Eastern Rift have no outlet to the sea and tend to be shallow, they have a high mineral content as the evaporation of water leaves the salts behind. For example, Lake Magadi has high concentrations of soda ( sodium carbonate ) and Lake Elmenteita , Lake Bogoria , and Lake Nakuru are all strongly alkaline , while
2064-410: The shallow soda lakes of the Eastern Rift Valley have crystallised salt turning the shores white and are famous for the large flocks of flamingo that feed on crustaceans . All the lakes in the Tanzanian section of this group are alkaline: The lakes of the Western or Albertine Rift , with Lake Victoria , include the largest, deepest, and oldest of the Rift Valley Lakes. They are also referred to as
2112-417: The teachings of figures like Hamza ibn-'Ali ibn-Ahmad and Al-Hakim bi-Amr Allah and Greek philosophers such as Plato and Aristotle . The number of Druze people worldwide is around one million, with about 45% to 50% living in Syria , 35% to 40% living in Lebanon , and less than 10% living in Israel ; recently there has been a growing Druze diaspora. There are also important minority religions like
2160-436: The terms Middle East , Eastern Mediterranean , and Near East (which is historically familiar but widely deprecated today). The National Geographic Style Manual as well as Maddison 's The World Economy: Historical Statistics (2003) by the Organisation for Economic Co-operation and Development (OECD) include only Bahrain, Iran, Iraq, Israel, Jordan, Kuwait, Lebanon, Oman, Qatar, Palestine (called West Bank and Gaza in
2208-876: The two largest religions in the world: Christianity and Islam , plus Judaism and Druze faith ) originated in West Asia. Islam is the largest religion in West Asia, but other faiths that originated there, such as Judaism and Christianity , are also well represented. In Armenia and Georgia , Oriental Orthodoxy and Eastern Orthodoxy respectively are the predominant religions, and there are still different ancient communities of Eastern Christians in Azerbaijan . There are still large ancient communities of Eastern Christians (such as Assyrians , Middle Eastern Christians and Arab Christians ) in Lebanon , Iraq , Iran , Turkey , Syria , Jordan , Israel and Palestine numbering more than 3 million in West Asia. There are also large populations of expatriate workers which include sizeable Christian communities living in
2256-489: The world's natural gas reserves are located in the region. Notes: Ramallah is the actual location of the government, whereas the proclaimed capital of Palestine is Jerusalem , which is disputed . Jerusalem is the proclaimed capital of Israel and the actual location of the Knesset , Israeli Supreme Court , etc. Due to its disputed status, most embassies are in Tel Aviv . British Overseas Territory Rift Valley lakes The Rift Valley lakes are
2304-399: Was thought to be a single feature that extended from Lebanon in the north to Mozambique in the south, where it constitutes one of two distinct physiographic provinces of the East African mountains . It included what today is called the Lebanese section of the Dead Sea Transform (Turkey to Straits of Tiran ), the Jordan Rift Valley (geographic term for section including entire course of
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