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Afro-Eurasia

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Afro-Eurasia
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{{Redirect|World Island|the artificial archipelago|The World (archipelago)}}{{coord|21.5000|N|86.5000|E|source:wikidata|display=title}}{{pp-move-vandalism|small=yes}}







factoids
|population = 6,151,810,000 (2013)|demonym = Afro-Eurasian, Eurafrasian|countries = 147|dependencies = 17 AUTHORS=NOACK, R. & GAMIO, L. WORLDVIEWS: THE WASHINGTON POST) ACCESSDATE=2015-04-24, {{refn|Represents sum of totals for Africa (2,138 languages), Asia (2,301), and Europe (286).}}|time = UTC-1 (Cap-Vert) UTC+12 (Siberia)|cities = }}Afro-Eurasia{{Citation | last = Frank | first = Andre G. | author-link = Andre Gunder Frank | title = ReORIENT: Global Economy in the Asian Age | year = 1998 | isbn = 978-0-520-21474-3 | publisher = University of California Press}} (or Afroeurasia,Field, Henry. "The University of California African Expedition: I, Egypt", American Anthropologist, New Series Vol. 50, No. 3, Part 1 (Jul. - Sep., 1948), pp. 479-493. or Eurafrasia,BOOK, 'continents' - Encyclopedia of World Geography, Volume 1,weblink R. W. McColl, 2005, Golson Books, Ltd., 9780816072293, 215, 2012-06-26, And since Africa and Asia are connected at the Suez Peninsula, Europe, Africa, and Asia are sometimes combined as Afro-Eurasia or Eurafrasia., or nicknamed the World Island) is a landmass which comprises the continents of Eurasia (Europe and Asia) and Africa. The terms are portmanteaus of the names of its constituent parts. It is the largest contiguous landmass on Earth. Afro-Eurasia encompasses {{convert|84,980,532|km2|sqmi}}, a little over half the world's land area, and has a population of approximately 6 billion people, roughly 86% of the world population.Based upon population estimates for 2007 cited in a UN report, World Population Prospects: The 2006 Revision (Highlights).

Related terms

The following terms are used for similar concepts:

Geology

Although Afro-Eurasia is typically considered to comprise two or three separate continents, it is not a proper supercontinent. Instead, it is the largest present part of the supercontinent cycle.The oldest part of Afro-Eurasia is probably the Kaapvaal Craton, which together with Madagascar and parts of India and western Australia formed part of the first supercontinent Vaalbara or Ur around 3 billion years ago. It has made up parts of every supercontinent since. At the breakup of Pangaea around 200 million years ago, the North American and Eurasian Plates together formed Laurasia while the African Plate remained in Gondwana, from which the Indian Plate split off. This impacted southern Asia around 50 million years ago and began the formation of the Himalayas. (Around the same time, it also fused with the Australian Plate.) The Arabian Plate broke off of Africa around 30 million years ago and impacted the Iranian Plate between 19 and 12 million years ago, ultimately forming the Alborz and Zagros chains of Iranian Plate. After this initial connection of Afro-Eurasia, the Betic corridor along the Gibraltar Arc closed a little less than 6 million years ago, fusing Northwest Africa and Iberia together. This led to the nearly complete desiccation of the Mediterranean Basin, the Messinian salinity crisis. Eurasia and Africa were then again separated: the Zanclean Flood around 5.33 million years ago refilled the Mediterranean Sea through the Strait of Gibraltar and the Red Sea and Gulf of Suez Rifts further divided Africa from the Arabian Plate.Today, Africa is now joined to Asia only by a narrow land bridge (which has been split by the Suez Canal at the Isthmus of Suez) and remains separated from Europe by the Straits of Gibraltar and Sicily. Paleogeologist Ronald Blakey has described the next 15 to 100 million years of tectonic development as fairly settled and predictable.Manaugh, Geoff & al. "What Did the Continents Look Like Millions of Years Ago?" in The Atlantic online. 23 Sept 2013. Accessed 22 July 2014. In that time, Africa is expected to continue drifting northward. It will close the Strait of Gibraltar around 600,000 years from now,Africa will collide with Europe and Asia, 50 Million years from now quickly evaporating the Mediterranean Sea."Only the inflow of Atlantic water maintains the present Mediterranean level. When that was shut off sometime between 6.5 to 6 MYBP, net evaporative loss set in at the rate of around 3,300 cubic kilometers yearly. At that rate, the 3.7 million cubic kilometres of water in the basin would dry up in scarcely more than a thousand years, leaving an extensive layer of salt some tens of meters thick and raising global sea level about 12 meters." Cloud, P. (1988). Oasis in space. Earth history from the beginning, New York: W.W. Norton & Co. Inc., 440. {{ISBN|0-393-01952-7}} No supercontinent will form within the settled time frame, however, and the geologic record is full of unexpected shifts in tectonic activity that make further projections "very, very speculative". Three possibilities are known as Novopangaea, Amasia, and Pangaea Ultima.NEWS, Williams, Caroline, Ted Nield, Pangaea, the comeback, NewScientist, 20 October 2007,weblink 28 September 2009, yes,weblink" title="web.archive.org/web/20080413162401weblink">weblink 13 April 2008, In the first two, the Pacific closes and Africa remains fused to Eurasia, but Eurasia itself splits as Africa and Europe spin towards the west; in the last, the trio spin eastward together as the Atlantic closes.

Divisions

(File:LocationAfricaEurasia.png|thumb|300px|right|Another projection of the Old World)Normally Afro-Eurasia is divided at the Suez Canal into Africa and Eurasia, the latter of which can be subdivided into Europe and Asia. It has also been divided into Eurasia-North Africa and Sub-Saharan Africa for cultural and historical reasons.{hide}Citation
| last=Diamond
| first=Jared
| author-link=Jared Diamond
| title=Guns, Germs, and Steel: The Fates of Human Societies
| year=1997
| isbn=0-393-03891-2
| publisher=Norton & Company
{edih}

Geographical areas

Africa:


Eurasia:
Near East Western Asia* Fertile Crescent* Hilly Flanks

Extreme points

This is a list of the points that are farther north, south, east or west than any other location on Afro-Eurasia.Afro-Eurasia (including islands) Afro-Eurasia (mainland) ¹ If the Azores are included as part of Afro-Eurasia, Flores is the westernmost part of the continent.² According to the International Date Line.

See also

{{commons}}

References

{{reflist|30em}}{{Continents of the world}}

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