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plume
(redirected from Mantle plumes)

    Also found in: Dictionary/thesaurus, Wikipedia 0.01 sec.
plume
1. Biology any feathery part, such as the structure on certain fruits and seeds that aids dispersal by wind
2. Geology a rising column of hot, low viscosity material within the earth's mantle, which is believed to be responsible for linear oceanic island chains and flood basalts
plume [plüm]
(analytical chemistry)
column
plume
Wood veneer having a large featherlike figure, usually cut from a crotch.
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What goes down must come up: Slabs that subduct and mix into the lower mantle are balanced by mantle plumes, rich in helium-3, which rise from the lower mantle to the Earth's surface without mixing significantly as they traverse the upper mantle," he added.
Scientists solve mystery of Earth's leaky mantle by Asian News International
Traditionally, most petrologists have accepted that during the Archean and Paleoproterozoic, komatiite melting temperatures ranged from 1600-1900[degrees]C, so komatiitic magmas were therefore related to deep-seated mantle plumes (Campbell et al.
Igneous rock associations 10. Komatiites by Dostal, Jaroslav / Geoscience Canada
The team's findings call for a re-examination of whether mantle plumes caused other volcanoes that are far from tectonic-plate boundaries, says Marcia K.
Breaking crust: sonar finds new kind of deep-sea volcano by Perkins, S. / Science News
 
 
 
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