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Modes and dynamics of multi-terrane deformation during continental collision
Huangfu, PP (Huangfu PengPeng)1; Li, ZH (Li ZhongHai)1; Fan, WM (Fan WeiMing)1,2
Source PublicationCHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
2019
Volume62Issue:4Pages:1230-1243
DOI10.6038/cjg2019M0607
Abstract

Almost all the collisional orogens are constructed of accreted terranes, which are commonly regarded as an essential component. Previous studies have extensively investigated physical processes of terrane accretion as well as the corresponding geological records, but terrane deformation behaviors and the detachment modes due to continuous continental convergence are still poorly understood. In this work, we built a series of 2D numerical models involving two terranes representing multi-terrane structure of the natural orogens, to explore the effects of rheological properties and geometric parameters of the terrane on itself deformation and dynamic evolution of the collision zone. Model results reveal that the deformation behaviors of the terranes are mainly controlled by the rheological strength and the geometric width of the terrane that neighbors on the subduction zone, whereas the width of the farther terrane won't affect much. More importantly, according to the model results, intra-terrane underthrusting only occurs under the condition of a wide subduction-zone-neighboring terrane, and it is the weak terrane that usually underthrusts the relatively strong terrane. This study not only indicates two contrasting terrane deformation modes that might be applied to western and central Tibet, but also provides significant implications for lithospheric evolution of the natural orogens that contain a number of accreted terranes.

Subject AreaGeosciences
WOS IDWOS:000467680300005
Language英语
Indexed BySCI
KeywordTectonic Evolution Constraints Subduction Orogens Plateau Beneath Tibet
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
Cooperation Status国内
ISSN0001-5733
Department大陆碰撞与高原隆升
URL查看原文
PublisherSCIENCE PRESS
SubtypeArticle
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Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9343
Collection图书馆
Corresponding AuthorHuangfu, PP (Huangfu PengPeng)
Affiliation1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Key Lab Computat Geodynam, Beijing 100049, Peoples R China;
2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China.
Recommended Citation
GB/T 7714
Huangfu, PP ,Li, ZH ,Fan, WM . Modes and dynamics of multi-terrane deformation during continental collision[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2019,62(4):1230-1243.
APA Huangfu, PP ,Li, ZH ,&Fan, WM .(2019).Modes and dynamics of multi-terrane deformation during continental collision.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,62(4),1230-1243.
MLA Huangfu, PP ,et al."Modes and dynamics of multi-terrane deformation during continental collision".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 62.4(2019):1230-1243.
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