A small Greater India restored by Himalayan crustal mass balance calculations

Li, Shunzhi; Tian, Xiaobo

doi:10.1016/j.jseaes.2022.105461

Cited by 5 publications

(1 citation statement)

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“…It is also difficult to explain the great velocity drop of Indian convergence (Figure 1c) during the oceanic subduction stage, since the oceanic slab pull is generally believed to be the main driving force of plate motion. Each of the above India‐Asia collision models have its own corresponding geological evidence as well as geodynamic difficulties (Li & Tian, 2022; Parsons et al, 2020). The purpose of this study is to provide geodynamic constraints for each model by systematic numerical simulations and answer what kinds of additional conditions are required for a specific model.…”

Section: Introductionmentioning

confidence: 99%

Numerical constraints on the one‐stage and two‐stage Greater India collision models

Huangfu

2023

Terra Nova

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India‐Asia collision is generally believed to have collided since 55 ± 5 Ma, with a total amount of convergence of 2900–4400 km. Besides the overriding Tibetan lithospheric shortening, a large amount of convergence has to be accommodated by the subducting plate of Greater India. Three typical India‐Asia collision models have been proposed, including the Greater Indian Continent (GIC) model, Intra‐Oceanic Arc model and Greater Indian Oceanic Basin model. In this study, a large‐scale 2D numerical model, driven by the reconstruction‐based India‐Asia convergence rate, have been conducted to evaluate these three major models. The model results indicate that the one‐stage GIC model favours later initial collision at ≤50 Ma. For the two‐stage collision, the large amount of convergence can be easily accommodated by modifying the length of oceanic subduction after the first stage of continental collision. This study provides systematic numerical constraints for the favourable conditions of each model.

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Section: Introductionmentioning

confidence: 99%