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

Journal of Earth system science

V K Gahalaut1¹  Bhaskar Kundu1¹ 

[1] National Geophysical Research Institute, Council of Scientific and Industrial Research, Uppal Road, Hyderabad 500 007, India.$$

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

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

Unknown