Hemispheric Geochemical Dichotomy of the Mantle Is a Legacy of Austral Supercontinent Assembly and Onset of Deep Continental Crust Subduction

Hemispheric Geochemical Dichotomy of the Mantle Is a Legacy of Austral Supercontinent Assembly and Onset of Deep Continental Crust Subduction

Abstract Oceanic hotspots with extreme enriched mantle radiogenic isotopic signatures—including low 143Nd/144Nd indicative of subducted continental crust—are linked to plume conduits sampling the southern hemispheric mantle. However, the mechanisms responsible for concentrating subducted continental...

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Bibliographic Details
Main Authors: M. G. Jackson, F. A. Macdonald
Format: Article
Language:English
Published: Wiley 2022-12-01
Series:AGU Advances
Subjects:
mantle plume
hotspot
continental crust
Dupal
Gondwana
Pangea
Online Access:https://doi.org/10.1029/2022AV000664

Internet

https://doi.org/10.1029/2022AV000664

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