Lava

  • 10-metre-high (33 ft) fountain of pāhoehoe lava, hawaii, united states
    lava flow during a rift eruption at krafla, iceland in 1984

    lava is molten rock generated by geothermal energy and expelled through fractures in planetary crust or in an eruption, usually at temperatures from 700 to 1,200 °c (1,292 to 2,192 °f). the structures resulting from subsequent solidification and cooling are also sometimes described as lava. the molten rock is formed in the interior of some planets, including earth, and some of their satellites, though such material located below the crust is referred to by other terms.

    a lava flow is a moving outpouring of lava created during a non-explosive effusive eruption. when it has stopped moving, lava solidifies to form igneous rock. the term lava flow is commonly shortened to lava. although lava can be up to 100,000 times more viscous than water, lava can flow great distances before cooling and solidifying because of its thixotropic and shear thinning properties.[1][2]

    explosive eruptions produce a mixture of volcanic ash and other fragments called tephra, rather than lava flows. the word lava comes from italian, and is probably derived from the latin word labes which means a fall or slide.[3][4] the first use in connection with extruded magma (molten rock below the earth's surface) was apparently in a short account written by francesco serao on the eruption of vesuvius in 1737.[5] serao described "a flow of fiery lava" as an analogy to the flow of water and mud down the flanks of the volcano following heavy rain.

  • lava composition
  • lava behavior
  • lava morphology
  • lava landforms
  • hazards
  • towns destroyed by lava flows
  • towns damaged by lava flows
  • towns destroyed by tephra
  • see also
  • references
  • external links

10-metre-high (33 ft) fountain of pāhoehoe lava, Hawaii, United States
Lava flow during a rift eruption at Krafla, Iceland in 1984

Lava is molten rock generated by geothermal energy and expelled through fractures in planetary crust or in an eruption, usually at temperatures from 700 to 1,200 °C (1,292 to 2,192 °F). The structures resulting from subsequent solidification and cooling are also sometimes described as lava. The molten rock is formed in the interior of some planets, including Earth, and some of their satellites, though such material located below the crust is referred to by other terms.

A lava flow is a moving outpouring of lava created during a non-explosive effusive eruption. When it has stopped moving, lava solidifies to form igneous rock. The term lava flow is commonly shortened to lava. Although lava can be up to 100,000 times more viscous than water, lava can flow great distances before cooling and solidifying because of its thixotropic and shear thinning properties.[1][2]

Explosive eruptions produce a mixture of volcanic ash and other fragments called tephra, rather than lava flows. The word lava comes from Italian, and is probably derived from the Latin word labes which means a fall or slide.[3][4] The first use in connection with extruded magma (molten rock below the Earth's surface) was apparently in a short account written by Francesco Serao on the eruption of Vesuvius in 1737.[5] Serao described "a flow of fiery lava" as an analogy to the flow of water and mud down the flanks of the volcano following heavy rain.

Other Languages
Afrikaans: Lawa
العربية: حمم
Avañe'ẽ: Tata hyku
azərbaycanca: Lava
বাংলা: লাভা
Bân-lâm-gú: Iûⁿ-gâm
беларуская: Лава вулканічная
беларуская (тарашкевіца)‎: Лява
भोजपुरी: लावा
български: Лава
català: Lava
čeština: Láva
corsu: Lava
Cymraeg: Lafa
dansk: Lava
Deutsch: Lava
eesti: Laava
Ελληνικά: Λάβα
español: Lava
Esperanto: Lafo
euskara: Laba
فارسی: گدازه
français: Lave
Frysk: Lava
furlan: Lave
Gaeilge: Laibhe
galego: Lava
한국어: 용암
հայերեն: Լավա
हिन्दी: लावा
hrvatski: Lava
Ido: Lavao
Bahasa Indonesia: Lava
íslenska: Hraun
italiano: Lava
עברית: לבה
Jawa: Lava
ಕನ್ನಡ: ಲಾವ ರಸ
ქართული: ლავა
қазақша: Лава
Kiswahili: Lava (volkeno)
Kreyòl ayisyen: Lav
Кыргызча: Лава
Latina: Lava
latviešu: Lava
Lëtzebuergesch: Lava
lietuvių: Lava
Limburgs: Lava
lumbaart: Lava
magyar: Láva
македонски: Лава
മലയാളം: ലാവ
Malti: Lava
मराठी: शिलारस
მარგალური: ლავა
Bahasa Melayu: Lava
Nederlands: Lava
Nedersaksies: Lava
日本語: 溶岩
norsk: Lava
norsk nynorsk: Lava
occitan: Lava
oʻzbekcha/ўзбекча: Lava
ਪੰਜਾਬੀ: ਲਾਵਾ
پنجابی: لاوا
Picard: Lave
Plattdüütsch: Lava
polski: Lawa
português: Lava
română: Lavă
Runa Simi: Ratata
русский: Лава
Scots: Lava
sicilianu: Lava
Simple English: Lava
slovenčina: Láva
slovenščina: Lava
српски / srpski: Лава
srpskohrvatski / српскохрватски: Lava
suomi: Laava
svenska: Lava
తెలుగు: లావా
Türkçe: Lav
українська: Лава
اردو: لاوا
Tiếng Việt: Dung nham
Volapük: Lavat
Winaray: Lava
吴语: 熔岩
粵語: 熔岩
žemaitėška: Lava
中文: 熔岩