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Mount Tambora formed as a result of a subduction zone. Here, a section of the ocean floor that is part of the Indo-Australian Plate is sliding under part of the Eurasian Plate and into the mantle. The oceanic crust takes some water and other volatiles with it. This seeps into the superheated rock of the mantle, allowing it to melt. It then rises toward the surface and through the crust via cracks. This then emerges on the surface, forming volcanoes such as Mount Tambora.

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11y ago

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