• Slab detachment of subducted Indo-Australian plate beneath Sunda arc, Indonesia

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    • Keywords


      Slab detachment; subduction zone; Sunda arc; Indo-Australian slab; trench migration.

    • Abstract


      Necking, tearing, slab detachment and subsequently slab loss complicate the subduction zone processes and slab architecture. Based on evidences which include patterns of seismicity, seismic tomography and geochemistry of arc volcanoes, we have identified a horizontal slab tear in the subducted Indo-Australian slab beneath the Sunda arc. It strongly reflects on trench migration, and causes along-strike variations in vertical motion and geochemically distinct subduction-related arc magmatism. We also propose a model for the geodynamic evolution of slab detachment.

    • Author Affiliations


      Bhaskar Kundu1 V K Gahalaut1

      1. National Geophysical Research Institute, Council of Scientific and Industrial Research, Uppal Road, Hyderabad 500 007, India.
    • Dates

  • Journal of Earth System Science | News

© 2017 Indian Academy of Sciences, Bengaluru.