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Russian
плюм
Portuguese
superpluma
Spanish
pluma del manto
Catalan
plomall de mantell
Wikidata

Upwelling of abnormally hot rock within the Earth's mantle.

плюм
1
Deep reefs have long been considered a refuge from the thermal anomalies caused by climate change.
Radio NZ
1
They also discuss a potential mantle plume control, which is interesting, but more speculative in my opninon.
Wired
2
The distribution of hotspots ( mantle plumes) worldwide also seems to show they come in antipodal pairs.
Wired