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Differentiating induced versus spontaneous subduction initiation using thermomechanical models and metamorphic soles

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  • Xin Zhou

    (University of Minnesota)

  • Ikuko Wada

    (University of Minnesota)

Abstract

Despite the critical role of subduction in plate tectonics, the dynamics of its initiation remains unclear. High-temperature low-pressure metamorphic soles are vestiges of subduction initiation, providing records of the pressure and temperature conditions along the subducting slab surface during subduction initiation that can possibly differentiate the two end-member subduction initiation modes: spontaneous and induced. Here, using numerical models, we show that the slab surface temperature reaches 800–900 °C at ~1 GPa over a wide range of parameter values for spontaneous subduction initiation whereas for induced subduction initiation, such conditions can be reached only if the age of the overriding plate is

Suggested Citation

  • Xin Zhou & Ikuko Wada, 2021. "Differentiating induced versus spontaneous subduction initiation using thermomechanical models and metamorphic soles," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-24896-x
    DOI: 10.1038/s41467-021-24896-x
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    Cited by:

    1. Hong-Yan Li & Xiang Li & Jeffrey G. Ryan & Chao Zhang & Yi-Gang Xu, 2022. "Boron isotopes in boninites document rapid changes in slab inputs during subduction initiation," Nature Communications, Nature, vol. 13(1), pages 1-10, December.

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