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Collision and rotation of the South China block and their role in the formation and exhumation of ultrahigh pressure rocks in the Dabie Shan orogen

文献类型：期刊论文

作者Guo, Xiaoyu1; Encarnacion, John1; Xu, Xiao2; Deino, Alan3; Li, Zhiwu4; Tian, Xiaobo5
刊名TERRA NOVA
出版日期2012-10-01
卷号24期号:5页码:339-350
ISSN号0954-4879
DOI10.1111/j.1365-3121.2012.01072.x
文献子类Review
英文摘要Terra Nova, 24, 339350, 2012 Abstract Studies of regional plate-scale processes that may influence the exhumation of ultra-high pressure (UHP) metamorphic rocks are few despite their potential importance. Here, we review and summarize available age constraints along with the Qinling-Dabie Shan orogen, which separates the North China Block (NCB) from the South China Block (SCB). We find that collision-related events in the west and extension-related events in the east, where the large Dabie Shan UHP terrane is located, were contemporaneous. Available palaeomagnetic data indicate clockwise rotation of the SCB relative to the NCB during this time. Previous work indicated that the collision propagated from east to west where indentation of the SCB into the Qinling-Dabie Shan orogen was active in the Hannan Dome area at 165 +/- 3 Ma as constrained by new 40Ar/39Ar dates on synkinematic sericite in an indentation-related mylonitic shear zone. While this contraction was occurring in the west, exhumation of the UHP terrane was occurring in the Dabie Shan in the east. We propose that the collision of the SCB with the NCB occurred not only in a scissor-like fashion, as previously suggested, but also involved a later rotation about a pole west of the Dabie Shan during the closure of the Mianlue Ocean. As a consequence of this rotation, extension occurred between the South China Block and North China Block east of the pole of rotation leading to extensional exhumation of the Dabie Shan orogen. This microcontinent-scale rotation of the SCB may have provided an important component in the exhumation of the largest UHP terrane in the world.
WOS关键词U-PB AGES ; EASTERN CHINA ; TECTONIC IMPLICATIONS ; PALEOMAGNETIC CONSTRAINTS ; CONTINENTAL SUBDUCTION ; METAMORPHIC ROCKS ; NORTHERN MARGIN ; QINLING OROGEN ; YANGTZE BLOCK ; UHP ROCKS
WOS研究方向Geology
语种英语
WOS记录号WOS:000308564300001
出版者WILEY-BLACKWELL
资助机构Saint Louis University ; Saint Louis University ; National Natural Science Foundation of China(40802049 ; National Natural Science Foundation of China(40802049 ; American Association of Petroleum Geologists (AAPG) ; American Association of Petroleum Geologists (AAPG) ; Sigma Xi ; Sigma Xi ; 40974025) ; 40974025) ; Saint Louis University ; Saint Louis University ; National Natural Science Foundation of China(40802049 ; National Natural Science Foundation of China(40802049 ; American Association of Petroleum Geologists (AAPG) ; American Association of Petroleum Geologists (AAPG) ; Sigma Xi ; Sigma Xi ; 40974025) ; 40974025) ; Saint Louis University ; Saint Louis University ; National Natural Science Foundation of China(40802049 ; National Natural Science Foundation of China(40802049 ; American Association of Petroleum Geologists (AAPG) ; American Association of Petroleum Geologists (AAPG) ; Sigma Xi ; Sigma Xi ; 40974025) ; 40974025) ; Saint Louis University ; Saint Louis University ; National Natural Science Foundation of China(40802049 ; National Natural Science Foundation of China(40802049 ; American Association of Petroleum Geologists (AAPG) ; American Association of Petroleum Geologists (AAPG) ; Sigma Xi ; Sigma Xi ; 40974025) ; 40974025)
源URL[http://ir.iggcas.ac.cn/handle/132A11/84066]  
专题中国科学院地质与地球物理研究所
通讯作者Guo, Xiaoyu
作者单位1.St Louis Univ, Dept Earth & Atmospher Sci, St Louis, MO 63108 USA
2.Univ Oklahoma, ConocoPhillips Sch Geol & Geophys, Norman, OK 73019 USA
3.Berkeley Geochronol Ctr, Berkeley, CA 94709 USA
4.Chengdu Univ Technol, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610059, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Res Dept Tibetan Plateau, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Guo, Xiaoyu,Encarnacion, John,Xu, Xiao,et al. Collision and rotation of the South China block and their role in the formation and exhumation of ultrahigh pressure rocks in the Dabie Shan orogen[J]. TERRA NOVA,2012,24(5):339-350.
APA Guo, Xiaoyu,Encarnacion, John,Xu, Xiao,Deino, Alan,Li, Zhiwu,&Tian, Xiaobo.(2012).Collision and rotation of the South China block and their role in the formation and exhumation of ultrahigh pressure rocks in the Dabie Shan orogen.TERRA NOVA,24(5),339-350.
MLA Guo, Xiaoyu,et al."Collision and rotation of the South China block and their role in the formation and exhumation of ultrahigh pressure rocks in the Dabie Shan orogen".TERRA NOVA 24.5(2012):339-350.

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来源：地质与地球物理研究所

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