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During the middle of the 19th century, Charles Darwin developed was the developer of the more commonly accepted theory of how an atoll is formed. Classifying the atoll as a unique type of island, Darwin understood the creation of an atoll as having its roots in volcanic activity.
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www.wisegeek.com/what-is-an-atoll.htm
www.wisegeek.com/what-is-an-atoll.htm
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Geophysics question: How does an atoll form? an atoll is formed first as a reef that fringes a volcanic island. As the island sinks(after the volcanic activity has ceased and the crust has cooled, becoming ... an atoll is formed first as a reef that fringes a volcanic island. As the island sinks(after the volcanic activity...
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wiki.answers.com/Q/How_does_an_atoll_form
wiki.answers.com/Q/How_does_an_atoll_form
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Coral islets are supposed to have been formed on the reef; and a ship is anchored in the lagoon-channel. This channel will be more or ... The instant this takes place, a perfect atoll is formed: I have said, remove the high land from within an encircling barrier-reef, and an atoll is left, and the land has been removed.
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pauillac.inria.fr/~clerger/Darwin.html
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An atoll is an island of coral that encircles a lagoon partially or completely. Darwin explained the creation of coral atolls in the South Pacific (1842) based upon observations made during a five-year voyage aboard the HMS Beagle (1831–183...
http://answers.yahoo.com/question/index?qid=20090531085...
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Volcanoes tend to coincide with major plate boundaries, though some, like the Hawaiian Islands, formed over hot spots in the earth's surface far from plate boundaries. ... Atols are most common in the tropical Pacific Ocean where whole groups of islands, such as the Marshall, Tuamotu, and Kiribati islands, are atoll chains.
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www.pacificislandtravel.com/nature_gallery/pacificislan...
www.pacificislandtravel.com/nature_gallery/pacificislands.htm
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Curving its way above and below the equator, the Republic of Kiribati (pronounced 'Kiri-bas') encompasses the Gilbert, Phoenix and Line Islands, and was known under British rule as the Gilbert Islands. ... Kiribati's recent colonial and WWII history has had little impact on the outer islands, ... Tarawa Atoll...
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www.lonelyplanet.com/worldguide/destinations/pacific/ki...
www.lonelyplanet.com/worldguide/destinations/pacific/kiribati
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Examples include how an atoll is formed, weather systems around islands, or the volcanic formation of islands. Either individually or in small groups, ask students to illustrate and write an accompanying narrative explaining this specific aspect of island formation.
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www.nationalgeographic.com/xpeditions/lessons/04/g35/bo...
www.nationalgeographic.com/xpeditions/lessons/04/g35/bowerformed.html
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Atolls are coral islands. They have beaches made of coral sand, and perhaps a few palm trees growing on little bars of coral rubble. The center of the atoll is a shallow lagoon. ... First an island is formed by a volcano, then corals start to grow as a fringing reef around the island. Over time the volcano dies and starts...
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www.athro.com/sci/atoll.html
www.athro.com/sci/atoll.html
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How Atolls Are Formed ... *When reef is separated by water from volcano peak, it is called a barrier reef. The circular coral belt around lagoon turns reef into island. When this island sinks below sea level an atoll is born.
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www.calstatela.edu/faculty/eviau/edit557/oceans/patty/p...
www.calstatela.edu/faculty/eviau/edit557/oceans/patty/pcorla.htm
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