Subduction and Slab Detachment Under Moving Trenches During Ongoing India?Asia Convergence

The dynamics of slab detachment and associated geological fingerprints have been inferred from various numerical analogue models. These invariably use a setup with slab-pull-driven convergence in which detaches below mantle-stationary trench after the arrest plate due to arrival continental lithosphere. In contrast, reconstructions show that post-detachment is common trenches sutures are rarely during detachment. Here, we identify more realistic kinematic context using example India-Asia convergent system. We first only India Himalayas slabs (from India’s northern margin) Carlsberg western unequivocally detached Indian Several other Ocean do not require Neotethyan origin may be Mesotethys Paleotethys origin. Additionally, still-connected being dragged together forward (Hindu Kush) or sideways (Burma, Chaman) through mantle. occurred at moving ongoing convergence, providing geodynamic conditions for future experiments. actively detaching Hindu Kush type-example this setting, whilst 25-13 Ma phase shallow slab, here reconstructed kinematics tomography, agrees well independent, published estimates orogen Sulaiman Ranges Pakistan hold signatures laterally slab. This article protected by copyright. All rights reserved.