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A continental arc is a type of volcanic arc occurring as an "arc-shape" topographic high region along a continental margin. The continental arc is formed at an active continental margin where two tectonic plates meet, and where one plate has continental crust and the other oceanic crust along the line of plate convergence, and a subduction zone develops. The magmatism and petrogenesis of continental crust are complicated: in essence, continental arcs reflect a mixture of oceanic crust materials, mantle wedge and continental crust materials.

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  • Continental arc (en)
  • Arco continental (pt)
  • 大陆弧 (zh)
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  • A continental arc is a type of volcanic arc occurring as an "arc-shape" topographic high region along a continental margin. The continental arc is formed at an active continental margin where two tectonic plates meet, and where one plate has continental crust and the other oceanic crust along the line of plate convergence, and a subduction zone develops. The magmatism and petrogenesis of continental crust are complicated: in essence, continental arcs reflect a mixture of oceanic crust materials, mantle wedge and continental crust materials. (en)
  • Arco vulcânico continental é a designação dada em tectónica de placas a um tipo de arco vulcânico que se forma numa margem continental activa quando duas placas tectónicas entram em colisão e se desenvolve uma zona de subducção. A estrutura manifesta-se à superfície pela formação de uma estrutura montanhosa em forma de arco, ao longo da qual se instala vulcanismo. O magmatismo e na crusta continental quando submetida aos processos associadas a este tipo de arco são complexos e reflectem a mistura de materiais da crusta oceânica, da que se forma entres as placas em subducção e da própria crusta continental. (pt)
  • 大陆弧(英語:continental arc)是一种沿大陆边缘的火山弧。 形成于活动大陆边缘的俯冲带,当两个构造板块发生碰撞时,相对致密的大洋地壳会俯冲到相对较轻的大陆地壳之下。由于俯冲过程,相对较冷的洋壳与水一起俯冲到软流圈,在这种条件下,下行板块释放出 H2O 和 CO2 等挥发物,导致上述软流圈部分熔融产生岩浆,在地表形成一系列火山造成火山弧。在大陆地壳上的火山弧称为大陆弧,在海洋地壳上的火山弧称为岛弧。 (zh)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Active_Margin.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Continental_Arc_Sketch.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Cascadia_subduction_zone_USGS.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/MAGMAARC1.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/kamchatka_peninsula_topo.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/map_of_alaska_volcanoes_okmok.jpg
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