Last Updated
：2025/11/24
mantle plume
（ plural ）
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(geology) An upwelling of abnormally hot molten material from the Earth's mantle which spreads sideways when it reaches the lithosphere.
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mantle plume
Geologists suspect that a mantle plume beneath the continent triggered the extensive volcanic activity millions of years ago.
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Geologists suspect that a mantle plume beneath the continent triggered the extensive volcanic activity millions of years ago.
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