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Provenance Evolution of Age-Calibrated Strata Reveals When and How South China Block Collided With Gondwana
Yang, Chuan1,2; Li, Xian-Hua1,3; Li, Zheng-Xiang4; Zhu, Maoyan3,5; Lu, Kai1,3
2020-10-16
Source PublicationGEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
Volume47Issue:19Pages:9
Abstract

The South China Block (SCB) has been regarded by many as an integral part of Gondwana, but proposed timing and processes for its accretion to Gondwana vary and remain contentious, largely owing to the lack of reliable Pan-African age paleomagnetic data and tectono-magmatic records from the SCB. Integrated in situ U-Pb ages and Hf-O isotope analyses of detrital zircons from geochronologically well-calibrated Ediacaran-Cambrian sedimentary rocks of western SCB reveal age populations of 2.51, 1.85, 1.20, 0.80, and 0.52 Ga. Detrital zircon age spectra indicate a major tectonic transition for the SCB during 0.56-0.54 Ga, interpreted to reflect the beginning of the collision between SCB-Indochina and NW India blocks. The collisional event lasted until early Ordovician, leading to the suturing of the SCB-Indochina to the northern margin of East Gondwana. Plain Language Summary The South China Block is thought to be a part of the Gondwana superterrane, which was composed of more than half of all continents 650-400 million years ago (Ma). However, questions of when and how the South China Block collided with Gondwana are yet to be answered. In this study, we conducted provenance analyses of sedimentary rocks whose depositional ages were known via radioisotopic dating and chemo-biostratigraphy in the western South China Block. The results reveal a change in tectonic setting of the South China Block at 560-540 Ma, interpreted as the onset of the collision between the South China Block and India along the northern margin of East Gondwana.

DOI10.1029/2020GL090282
Indexed BySCI
Language英语
WOS KeywordZIRCON U-PB ; YANGTZE BLOCK ; HF ISOTOPES ; LHASA TERRANE ; SW CHINA ; CONSTRAINTS ; OROGENESIS ; SEDIMENTS ; MARGIN ; BASIN
Funding ProjectStrategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB18030300] ; National Natural Science Foundation of China[41802029] ; Australian Research Council[FL150100133]
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000584669000005
Funding OrganizationStrategic Priority Research Program (B) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Australian Research Council
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/32764
Collection中国科学院南京地质古生物研究所
Corresponding AuthorYang, Chuan; Li, Xian-Hua
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
2.British Geol Survey, Nottingham, England
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
4.Curtin Univ, Sch Earth & Planetary Sci, TIGeR, Tarth Geodynam Res Grp, Perth, WA, Australia
5.Chinese Acad Sci, Nanjing Inst Geol & Paleontol, State Key Lab Palaeobiol & Stratig, Nanjing, Peoples R China
Recommended Citation
GB/T 7714
Yang, Chuan,Li, Xian-Hua,Li, Zheng-Xiang,et al. Provenance Evolution of Age-Calibrated Strata Reveals When and How South China Block Collided With Gondwana[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(19):9.
APA Yang, Chuan,Li, Xian-Hua,Li, Zheng-Xiang,Zhu, Maoyan,&Lu, Kai.(2020).Provenance Evolution of Age-Calibrated Strata Reveals When and How South China Block Collided With Gondwana.GEOPHYSICAL RESEARCH LETTERS,47(19),9.
MLA Yang, Chuan,et al."Provenance Evolution of Age-Calibrated Strata Reveals When and How South China Block Collided With Gondwana".GEOPHYSICAL RESEARCH LETTERS 47.19(2020):9.
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