Title | Orogenic belt resulting from ocean-continent collision |
Author | |
Publication Years | 2022-11-01
|
DOI | |
Source Title | |
ISSN | 0091-7613
|
EISSN | 1943-2682
|
Volume | 50Issue:11Pages:1266-1269 |
Abstract | Orogenic belts have been thought to form through plate convergence, involving subduction of oceanic lithosphere at continental margins (accretionary orogens), which may ultimately lead to ocean closure and continent-continent collision (collisional orogens). Intraplate orogens away from plate margins have been known, but the mechanisms controlling their evolution are poorly understood. The South China craton, including the Yangtze and Cathaysia blocks, underwent a Paleozoic orogenesis that formed a >500-km-wide orogenic belt with widespread granitoids that are unconformably overlain by Devonian cover sequences. The pre-Devonian basement rocks were subjected to strong deformation and greenschist to amphibolite-facies metamorphism at 460–400 Ma. Paleozoic magmatism was characterized by voluminous crustally derived Silurian granitoids associated with incorporation of ancient crustal materials at 450–440 Ma and addition of juvenile mantle-derived melts at 420–410 Ma. Based on the absence of arc-like magmatism and the existence of ophiolites in the West Cathaysia terrane, geochemical evidence that oceanic crust existed beneath the East Cathaysia terrane, and geophysical evidence of contrasting lithospheres on both sides and two discrete slabs beneath their fault boundary, we propose that this Paleozoic orogenic belt was formed by collision between the two terranes that was driven by far-field forces during the assembly of Gondwana, and the East Cathaysia terrane represents oceanic lithosphere that was overthrusted by the continental crustal materials of the West Cathaysia terrane. Numerical modeling shows that this type of collision can explain the dynamics of the Paleozoic orogenesis in the South China craton and may be a mechanism for some orogens in which subduction-related igneous and metamorphic rocks are lacking |
URL | [Source Record] |
Indexed By | |
Language | English
|
Important Publications | NI Journal Papers
|
SUSTech Authorship | Others
|
Funding Project | National Natural Science Foundation of China[42025203];
|
WOS Research Area | Geology
|
WOS Subject | Geology
|
WOS Accession No | WOS:000886619800012
|
Publisher | |
EI Accession Number | 20224613115592
|
EI Keywords | Igneous rocks
; Structural geology
|
ESI Classification Code | Geology:481.1
|
ESI Research Field | GEOSCIENCES
|
Scopus EID | 2-s2.0-85141762915
|
Data Source | Scopus
|
Citation statistics |
Cited Times [WOS]:3
|
Document Type | Journal Article |
Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/411812 |
Department | Department of Earth and Space Sciences |
Affiliation | 1.State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan,430074,China 2.Department of Earth and Space Sciences,Southern University of Science and Technology,Shenzhen,518055,China |
Recommended Citation GB/T 7714 |
Zhao,Jun Hong,Yang,Ting,Wang,Wei. Orogenic belt resulting from ocean-continent collision[J]. GEOLOGY,2022,50(11):1266-1269.
|
APA |
Zhao,Jun Hong,Yang,Ting,&Wang,Wei.(2022).Orogenic belt resulting from ocean-continent collision.GEOLOGY,50(11),1266-1269.
|
MLA |
Zhao,Jun Hong,et al."Orogenic belt resulting from ocean-continent collision".GEOLOGY 50.11(2022):1266-1269.
|
Files in This Item: | There are no files associated with this item. |
|
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment