Key geodynamic processes and driving forces of Tethyan evolution

Cui, Fengyuan; Yang, Shuting; Zhong, Xingfu

doi:10.1007/s11430-022-1083-5

Cited by 12 publications

(11 citation statements)

References 134 publications

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“…However, the driving force for the long‐duration continental subduction/collision after the oceanic slab breakoff or totally consumed beneath 660‐km discontinuity (660D), is still an unsolved issue. For example, the driving force of Tethyan evolution and long‐lasting India‐Asia collision is widely debated (Li et al., 2023; and reference therein). Capitanio et al.…”

Section: Discussionmentioning

confidence: 99%

“…However, the driving force for the long-duration continental subduction/collision after the oceanic slab breakoff or totally consumed beneath 660-km discontinuity (660D), is still an unsolved issue. For example, the driving force of Tethyan evolution and long-lasting India-Asia collision is widely debated (Li et al, 2023;and reference therein). Capitanio et al (2010) suggested that the negative buoyancy of mafic Indian crust and lithospheric mantle after felsic crust scrap-off can provide a significant driving force for India-Asia convergence.…”

Section: The Driving Force For Deep Continental Subductionmentioning

confidence: 99%

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Continental Deep Subduction Versus Subduction Cessation: The Fate of Collisional Orogens

Wang,

Li,

Huangfu

2023

Tectonics

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The contrasting fates of collisional orogens, i.e., continental deep subduction or subduction cessation, are widely recognized by petrological, paleomagnetic and geophysical observations. However, the mechanisms of such different collisional modes, especially the dynamics of continental deep subduction, are controversial. In this study, we integrate the phase transition‐induced density evolution into a thermo‐mechanical numerical model. Combing the systematic petrological‐thermo‐mechanical models with force balance analyses, we find that the high metamorphic transformation degree, mildly depleted mantle composition of the subcontinental lithosphere, and a long preceding oceanic slab, increase the driving force for continental deep subduction. Additionally, the rheologically weak continental crust and asthenospheric mantle decrease the resistance force and promote deep subduction. Otherwise, the continental subduction cessation mode is favored. The calculations of slab negative buoyancy indicate that the phase transition‐induced metamorphic densification of the subducted continental crust and the mildly to moderately depleted lithospheric mantle can provide a great slab pull force to sustain the continued continental deep subduction; however, the positive buoyancy of highly depleted Archean lithospheric mantle impedes deep subduction and causes subduction cessation. Based on systematic numerical models, we also evaluate the crustal mass balance or deficit in continental collisional system, which indicates that ∼12%‐47% of pre‐collisional felsic crust could be subducted deeply with the sinking slab in the regime of continental deep subduction. In contrast, the recycled felsic crust is negligible in the regime of subduction cessation. Thus, the different modes of continental collision play a crucial role in the global crustal recycling and related mantle heterogeneities.This article is protected by copyright. All rights reserved.

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Section: Discussionmentioning

confidence: 99%

Section: The Driving Force For Deep Continental Subductionmentioning

confidence: 99%

Continental Deep Subduction Versus Subduction Cessation: The Fate of Collisional Orogens

Wang,

Li,

Huangfu

2023

Tectonics

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“…The India‐Asia collision acts as the last step of long‐term eastern Tethyan evolution and is generally believed to start at 55 ± 5 Ma, the evolution of which plays a significant role in understanding continental dynamics (e.g., Ding et al, 2016; Li et al, 2023; van Hinsbergen et al, 2019). The amount of northward convergence of the Indian Continent has been about 2900–4400 km, while the shortening of the overriding Tibetan Plateau has accommodated about 1600–1700 km, including the shortening of the northeastern Tibetan Plateau (van Hinsbergen et al, 2019; Yin & Harrison, 2000).…”

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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“…130 years since Tethys Geology was first proposed, geologists have studied it extensively (Gregory, 1915;Şengör, 1981). Although there still exists controversies in many aspects, geologists have made great progress in both tectonic evolution and metallogenic processes (Jenkyns, 1980;Li, Cui, et al, 2023;Metcalfe, 2021;Şengör, 1990). In the Eastern Tethyan Realm in particular, detailed geological mapping of the Tethyan domain (Jin & Xiao, 2017;Pan et al, 2012;Yin, 2010) aided in reconstructing the geodynamic mechanism of the Wilson cycle in which the Tethys oceans opened and closed many times (Yin, 2006;Zhu et al, 2022), elucidated multiple stages of evolution of Tethyan oceans (Liu et al, 2022;Metcalfe, 2021), characterized the metallogenic processes during oceanic plate subduction and continental collision (Deng et al, 2022;Hou & Zhang, 2015;Tang et al, 2019;Zou et al, 2022), and made many important advances in the environmental changes, life evolution, geomorphology and climate of the Phanerozoic Earth (Ding et al, 2022;Wu et al, 2020;Zhang et al, 2022).…”

mentioning

confidence: 99%

“…Taking the emergence and disappearance of oceanic plates as the main line, the evolution of the Tethyan oceanic basin system can be broken down into four key dynamic processes: continental breakup, subduction initiation, ocean ridge subduction and continental collision. On this basis, Li, Cui, et al (2023) systematically analysed the controlling factors and driving forces of each key process and proposed a 'multiengine-driving' model of Tethys evolution; that is, the northwards subduction of the multistage Tethyan oceanic plate provided the main driving force for the northwards drifting of continental margin terranes.…”

mentioning

confidence: 99%

Advances in metallogeny and tectonics of the Eastern Tethyan Realm: Introduction

et al. 2023

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The Tethys domain preserves one of the largest continent‐continent collisional orogenic belts on Earth. This belt can be divided into the Proterozoic to Palaeozoic Proto‐Tethyan orogenic belt, Late Palaeozoic to Triassic Palaeo‐Tethyan orogenic belt and Triassic to Cenozoic Meso‐ and Neo‐Tethyan orogenic belts. The Tethyan metallogenic domain, representing one of the three major metallogenic domains in the world, extends more than 10,000 km from east to west and has developed world‐class ore belts, such as the South‐east Asia tin ore belt, Sanjiang metallogenic belt in South‐west China, Gangdese–Pakistan–Iran porphyry copper belt and South‐east Europe epithermal gold belt. The geology of the Tethys domain has been studied for more than 100 years and many important advances have been made recently, although scientific issues remain controversial. This thematic section of Geological Journal contains 10 articles focusing on the formation of rocks and ore deposits, including petrology and geochemistry of magmatic, metamorphic and sedimentary rocks, and the formation mechanism of mineral deposits in the Eastern Tethyan Realm. These articles reflect new progress in related studies and provide important reference for future studies.

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Key geodynamic processes and driving forces of Tethyan evolution

Cited by 12 publications

References 134 publications

Continental Deep Subduction Versus Subduction Cessation: The Fate of Collisional Orogens

Continental Deep Subduction Versus Subduction Cessation: The Fate of Collisional Orogens

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

Advances in metallogeny and tectonics of the Eastern Tethyan Realm: Introduction

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