Magma bursts from a volcanic eruption at hte Pu'u Huluhulu volcanic vent on Mount Kilauea, Hawaii. For years, Kilauea was thought to be a part of the neighboring volcano of Mauna Loa. Geological tests of the region showed that Kilauea has its own "magma plumbing system," however.

Photograph by James L. Amos, National Geographic
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Hot Spot Volcanism
Hot Spot Volcanism Article

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A hot spot is a region deep within the Earth’s mantle from which heat rises by convection.

Magma's Role in the Rock Cycle
Magma's Role in the Rock Cycle Article

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Magma is a mixture of molten and semi-molten rock found beneath the surface of the Earth.

archipelago
archipelago Encyclopedic Entry

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Encyclopedic entry. An archipelago is a group of islands closely scattered in a body of water. Usually, this body of water is the ocean, but it can also be a lake or river.