Protolith origin and plate tectonic setting of metamorphic complexes in the Timor fold and thrust belt, Indonesia

Earle, Michael

doi:10.1016/j.earscirev.2023.104589

Cited by 1 publication

(1 citation statement)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To date, many studies have been made to investigate the structure and tectonics of SE Asia through various approaches such as geodetic measurements (Hinschberger et al, 2005;S. Zhao et al, 2023), geological surveys (Earle, 2023;Harris, 2006), and seismological investigations (Hua et al, 2023;Richards et al, 2007). However, there are two contrasting hypotheses about the cause of the curved arc: two different slabs subducting toward each other (Cardwell & Isacks, 1978;Das, 2004) or folding of one single slab (Pownall et al, 2016;Spakman & Hall, 2010).…”

Section: Introductionmentioning

confidence: 99%

Tilting‐Axis Anisotropic Tomography and Subduction Dynamics of the Java‐Banda Arc

Xie,

Wang,

Zhao

et al. 2024

Geophysical Research Letters

View full text Add to dashboard Cite

The 180° curvature of the Banda arc at the eastern end of the Java‐Banda subduction zone reflects complicated geodynamic processes. A detailed investigation of its anisotropic structure would reveal its subduction dynamics, further resolving the controversial issue on how the highly arcuate Banda arc formed. We apply tilting‐axis anisotropic tomography to obtain a high‐resolution 3‐D anisotropic model beneath the Java‐Banda region. Our results show significant differences between Java and Banda in the pattern of anisotropy in both the subducting slab and its surrounding mantle, which reflect two distinctly different deformation modes in the two domains. Our results support the single‐slab subduction model for the Banda region. In addition, trench‐normal and upright fast‐velocity‐planes appear in the deep upper mantle, which may indicate material migrations in the big mantle wedge. Fast‐velocity‐planes in the shallow mantle exhibit a toroidal distribution, reflecting past counter‐clockwise rotation and asthenospheric material extrusion.

show abstract