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Late Paleozoic tectonic evolution of the northem West Chinese Tianshan Belt

Citation

Wang, B and Faure, M and Cluzel, D and Shu, L and Charvet, J and Meffre, S and Ma, Q, Late Paleozoic tectonic evolution of the northem West Chinese Tianshan Belt, Geodinamica Acta, 19, (3-4) pp. 237-247. ISSN 0985-3111 (2006) [Refereed Article]

DOI: doi:10.3166/ga.19.237-247

Abstract

The northern West Chinese Tianshan is divided into three subunits: Carboniferous turbidite, ophiolitic mélange and Yili magmatic arc. Stratigraphical and petrological studies suggest that the turbidite and ophiolitic mélange form a subduction complex. The ophiolitic mélange that forms the North Tianshan suture was a result of intra-oceanic tectonism and subsequent redeposition and deformation during the subduction of the North Tianshan oceanic basin. The Yili arc-type granitoids are constained by single zircon U-Pb radiochronology between 361 and 309 Ma. The first-hand kinematic results on the deformed turbidite suggest that this suture zone was reworked by a Permian ductile dextral strike-slip fault. An evolutionary model of the study area allows three events to be distinguished: 1) Late Devonian to Carboniferous subduction of the oceanic basin below the Yili Block producing Yili magmatic rocks and Subduction complex, 2) Late Carboniferous complete closure of this basin, 3) Permian right-lateral strike-slip faulting generating pull-apart basins and alkaline magmatism. A prominent reactivation during the Indo-Eurasia collision provoked the northward thrusting of the Paleozoic units upon the Cenozoic sediments of the Junggar Basin, consequently, hiding the bulk of this Late Paleozoic suture. © 2006 Lavoisier SAS. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Earth Sciences
Research Group:Geology
Research Field:Tectonics
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Earth Sciences
Author:Meffre, S (Dr Sebastien Meffre)
ID Code:43814
Year Published:2006
Web of Science® Times Cited:45
Deposited By:Earth Sciences
Deposited On:2006-08-01
Last Modified:2007-05-02
Downloads:0

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