mantle plume
Americannoun
noun
Etymology
Origin of mantle plume
First recorded in 1970–75
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
A mantle plume is a column of unusually hot material moving upward through Earth's interior.
From Science Daily ● Jul. 18, 2026
Notably, this happened without the presence of a deep mantle plume, challenging long-held assumptions about the source of such volcanism.
From Science Daily ● Nov. 12, 2025
It has already identified new seamounts in the northeast Atlantic Ocean that could help track the evolution of the mantle plume that feeds Iceland’s volcanoes.
From Science Magazine ● Apr. 18, 2023
All this evidence is consistent with a mantle plume.
From Scientific American ● Mar. 22, 2023
Since time immemorial, a deeply rooted fountain of superheated rock known as a mantle plume has been torching the underside of the Pacific tectonic plate.
From Washington Post ● Dec. 22, 2022
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
