SCSIO OpenIR  > 中科院边缘海地质重点实验室
Characteristics of the crustal structure and its tectonic significance of the continental margin of SE South China Sea
Qiu Ning1,2; Yao YongJian1; Zhang JiangYang3; Wang LiJie3; Xu DongHai3
2019
Source PublicationCHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN0001-5733
Volume62Issue:7Pages:2607
AbstractThe southeastern South China Sea has a large sedimentary thickness, a developed reef and a complex tectonic evolution, which leads to unclear detection of deep structures and restricts the understanding to the crustal structure of the southern continental margin. This paper interprets the newly acquired and reprocessed multichannel seismic profiles, combining with drilling and trawl data, constrains shallow formations and structures, and utilizing the seismic velocity structure of the nearby Ocean-Bottom Seismometer to constrain the deep structure and interface; on this basis, the gravity and seismic joint inversion is carried out to analyze the spatial distribution characteristics of crustal density, and the gravitational gradient features are used to identify the structural unit. By comparing the upper, lower and whole crustal thickness and the stretching factor of the two survey lines, it is found that there are differences in the deep structures of the east and west parts of the southeastern South China Sea ; Liyue Fault may be the boundary between Liyue Block and Zhenghe Block, which controls the relative movement of these two blocks during the seafloor spreading stage of SCS.
DepartmentOMG
KeywordSouth China Sea Southeastern Continental margin Seismic Gravity Crustal structure Tectonic
DOI10.6038/cjg2019M0103
Citation statistics
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17947
Collection中科院边缘海地质重点实验室
Affiliation1.Chinese Acad Sci, Chinese Acad Sci Key Lab Ocean & Marginal Sea Geo, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China
2.Minist Land & Resources, Key Lab Marine Mineral Resources, Guangzhou Marine Geol Survey, Guangzhou 510075, Guangdong, Peoples R China
3.Univ Houston, Dept Earth & Atmospher Sci, Houston, TX 77204 USA
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Qiu Ning,Yao YongJian,Zhang JiangYang,et al. Characteristics of the crustal structure and its tectonic significance of the continental margin of SE South China Sea[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2019,62(7):2607, 2621.
APA Qiu Ning,Yao YongJian,Zhang JiangYang,Wang LiJie,&Xu DongHai.(2019).Characteristics of the crustal structure and its tectonic significance of the continental margin of SE South China Sea.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,62(7),2607.
MLA Qiu Ning,et al."Characteristics of the crustal structure and its tectonic significance of the continental margin of SE South China Sea".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 62.7(2019):2607.
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