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A How do volcance fomed? What are its two main processes?​

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Marcobaynosa14viz

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At constructive plate boundaries, the tectonic plates are moving away from one another. The Earth's crust is pulled apart to create a new pathway for rising hot magma to flow on to the surface. ... As the plates pull apart, molten rock, or magma, rises up and erupts as lava creating new ocean crust.

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Harissajadeviz

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Volcanoes form here in two settings where either oceanic plate or an oceanic plate descends below a continental plate. This process is called subduction and creates distinctive types of volcanoes depending on the setting:ocean-ocean subduction