A record of plume-induced plate rotation triggering subduction initiation

Douwe van Hinsbergen, Bernhard Steinberger, Carl Guilmette, Marco Maffione, Derya Gürer, Kalijn Peters, Alexis Plunder, Peter J. McPhee, Carmen Gaina, Eldert Advokaat, Reinoud L.M. Vissers, Wim Spakman

Research output: Contribution to journalArticlepeer-review

86 Downloads (Pure)

Abstract

The formation of a global network of plate boundaries surrounding a mosaic of lithospheric fragments was a key step in the emergence of Earth’s plate tectonics. So far, propositions for plate boundary formation are regional in nature; how plate boundaries are created over thousands of kilometres in geologically short periods remains elusive. Here we show from geological observations that a >12,000-km-long plate boundary formed between the Indian and African plates around 105 Myr ago. This boundary comprised subduction segments from the eastern Mediterranean region to a newly established India–Africa rotation pole in the west Indian Ocean, where it transitioned into a ridge between India and Madagascar. We identify coeval mantle plume rise below Madagascar–India as the only viable trigger of this plate rotation. For this, we provide a proof of concept by torque balance modelling, which reveals that the Indian and African cratonic keels were important in determining plate rotation and subduction initiation in response to the spreading plume head. Our results show that plumes may provide a non-plate-tectonic mechanism for large-plate rotation, initiating divergent and convergent plate boundaries far away from the plume head. We suggest that this mechanism may be an underlying cause of the emergence of modern plate tectonics.
Original languageEnglish
Pages (from-to)626-630
Number of pages5
JournalNature Geoscience
Volume14
Issue number8
Early online date8 Jul 2021
DOIs
Publication statusPublished - Aug 2021

Bibliographical note

Funding Information:
D.J.J.v.H. acknowledges funding through European Research Council Starting Grant 306810 (SINK) (also funding M.M., D.G., A.P. and E.L.A.), Netherlands Organization for Scientific Research (NWO) Vidi grant 864.11.004 (also funding K.P. and P.J.M.) and Netherlands Organization for Scientific Research (NWO) Vici grant 865.17.001. B.S. and C. Gaina received funding from the Research Council of Norway through its Centres of Excellence funding scheme, project no. 223272. B.S. acknowledges the innovation pool of the Helmholtz Association through the Advanced Earth System Modelling Capacity (ESM) activity. C. Guilmette was funded through Discovery Grant (RGPIN-2014-05681) from the National Science and Engineering Research Council of Canada. We thank I. L. ten Kate and D. Bandyopadhyay for discussion and F. Capitanio and D. Müller for their comments.

Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Nature Limited.

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

Fingerprint

Dive into the research topics of 'A record of plume-induced plate rotation triggering subduction initiation'. Together they form a unique fingerprint.

Cite this