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mantle plume. In DICTIOUS you will not only get to know all the dictionary meanings for the word
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English
Noun
mantle plume (plural mantle plumes)
- (geology) An upwelling of abnormally hot molten material from the Earth's mantle which spreads sideways when it reaches the lithosphere.
Translations
upwelling of abnormally hot molten material from the Earth's mantle
Further reading