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High island

Geologically, a high island or volcanic island is an island of volcanic origin. The term can be used to distinguish such islands from low islands, which are formed from sedimentation or the uplifting of coral reefs[1] (which have often formed on sunken volcanos).

Mo'orea, a high island of volcanic origin where the central island is still prominent
Stromboli is one of the eight Aeolian Islands, a volcanic arc north of Sicily

Definition and origin

There are a number of "high islands" that rise no more than 1 metre (3 ft 3 in) above sea level, often classified as "islets or rocks", while some low islands, such as Banaba, Henderson Island, Makatea, Nauru, and Niue, as uplifted coral islands, rise over 50 metres (160 ft) above sea level.

The two types of islands are often found in proximity to each other, especially among the islands of the South Pacific Ocean, where low islands are found on the fringing reefs that surround most high islands. Volcanic islands normally arise above a hotspot.

Habitability

High islands above a certain size usually have fresh groundwater, while low islands often do not, so high islands are more likely to be habitable.

See also

  • Archipelagic apron – Fan-shaped gently sloping region of sea floor found around oceanic islands
  • Atoll – Ring-shaped coral reef
  • Canary Islands – Spanish archipelago and region in the Atlantic Ocean
  • Galápagos Islands – Ecuadorean archipelago and protected area
  • Guyot – Isolated, flat-topped underwater volcano mountain
  • Krakatoa Archipelago
  • Seamount – Mountain rising from the ocean seafloor that does not reach to the water's surface
  • Submarine landslide – Landslides that transport sediment across the continental shelf and into the deep ocean
  • Volcanic arc – Chain of volcanoes formed above a subducting plate

References

  1. ^ Murphy, Raymond E. (July 1949). ""High" and "Low" Islands in the Eastern Carolines". Geographical Review. American Geographical Society. 39 (3): 425–439. doi:10.2307/210643. JSTOR 210643.

External links

  • Micronesian culture: High island and low island cultures at Britannica.com. Retrieved 2011-09-22.

high, island, places, named, high, island, high, island, disambiguation, volcanic, islands, redirects, here, series, radeon, series, this, article, relies, excessively, references, primary, sources, please, improve, this, article, adding, secondary, tertiary, . For places named High Island see High Island disambiguation Volcanic Islands redirects here For the GPU series see Radeon 200 series This article relies excessively on references to primary sources Please improve this article by adding secondary or tertiary sources Find sources High island news newspapers books scholar JSTOR January 2022 Learn how and when to remove this template message Geologically a high island or volcanic island is an island of volcanic origin The term can be used to distinguish such islands from low islands which are formed from sedimentation or the uplifting of coral reefs 1 which have often formed on sunken volcanos Mo orea a high island of volcanic origin where the central island is still prominent Stromboli is one of the eight Aeolian Islands a volcanic arc north of Sicily Contents 1 Definition and origin 2 Habitability 3 See also 4 References 5 External linksDefinition and origin EditThere are a number of high islands that rise no more than 1 metre 3 ft 3 in above sea level often classified as islets or rocks while some low islands such as Banaba Henderson Island Makatea Nauru and Niue as uplifted coral islands rise over 50 metres 160 ft above sea level The two types of islands are often found in proximity to each other especially among the islands of the South Pacific Ocean where low islands are found on the fringing reefs that surround most high islands Volcanic islands normally arise above a hotspot Habitability EditHigh islands above a certain size usually have fresh groundwater while low islands often do not so high islands are more likely to be habitable See also Edit Islands portalArchipelagic apron Fan shaped gently sloping region of sea floor found around oceanic islands Atoll Ring shaped coral reef Canary Islands Spanish archipelago and region in the Atlantic Ocean Galapagos Islands Ecuadorean archipelago and protected area Guyot Isolated flat topped underwater volcano mountain Krakatoa Archipelago Seamount Mountain rising from the ocean seafloor that does not reach to the water s surface Submarine landslide Landslides that transport sediment across the continental shelf and into the deep ocean Volcanic arc Chain of volcanoes formed above a subducting plateReferences Edit Murphy Raymond E July 1949 High and Low Islands in the Eastern Carolines Geographical Review American Geographical Society 39 3 425 439 doi 10 2307 210643 JSTOR 210643 External links EditMicronesian culture High island and low island cultures at Britannica com Retrieved 2011 09 22 Retrieved from https en wikipedia org w index php title High island amp oldid 1135485910, wikipedia, wiki, book, books, library,

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