A subduction influence on ocean ridge basalts outside the Pacific subduction shield

We discover a pervasive subduction influence in the Arctic, Atlantic and Indian mantle, which is nearly absent in the Pacific mantle. Such a hemispheric-scale upper mantle heterogeneity reflects the control of a “subduction shield” that has surrounded the Pacific Ocean for 180 Myr.

Bibliographic Details
Published in:Nature Communications
Main Authors: A. Y. Yang, C. H. Langmuir, Y. Cai, P. Michael, S. L. Goldstein, Z. Chen
Format: Article in Journal/Newspaper
Language:English
Published: Nature Portfolio 2021
Subjects:
Science
Q
Arctic
Indian
Pacific
Online Access:https://doi.org/10.1038/s41467-021-25027-2
https://doaj.org/article/5139577c910d436abee3fb4f9004e5cb
Description
Summary:We discover a pervasive subduction influence in the Arctic, Atlantic and Indian mantle, which is nearly absent in the Pacific mantle. Such a hemispheric-scale upper mantle heterogeneity reflects the control of a “subduction shield” that has surrounded the Pacific Ocean for 180 Myr.

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