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Crustal structure from onshore-offshore wide-angle seismic data: Application to Northern Sulu Orogen and its adjacent area

文献类型：期刊论文

作者Zhao, Weina7,8; Wang, Huigang6; Shi, Hongcai5; Xie, Hui5; Wu, Zhiqiang4; Chen, Shanshan4; Zhang, Xunhua3; Hao, Tianyao2; Zheng, Yanpeng1
刊名TECTONOPHYSICS
出版日期2019-11-05
卷号770页码:12
关键词Northern Sulu Orogen Wide-angle seismic survey 2-D crustal structure Subduction polarity Orogenic boundary
ISSN号0040-1951
DOI10.1016/j.tecto.2019.228220
英文摘要The Northern Sulu Orogen is the northeastern part of the Dabie-Sulu Orogen, which formed during the Triassic collision between the North China Block (NCB) and the South China Block (SCB). The lack of detail in the onshore-offshore seismic model in the crustal levels means that the deep boundaries and subduction polarity of the Northern Sulu Orogen remain ambiguous. To obtain insight into the contact relationship between the NCB and SCB and their tectonic implication, we processed the onshore-offshore wide-angle seismic data from 32 sections that were acquired in 2013 in order to achieve a continuous 2-D velocity and interface model. The results show that three parts exhibit significant differences in the P-wave velocities, interface depths and intracrustal structures, which all correlate well with the regional geology and tectonics. In the northern and southern parts of the survey area, the upper crust displays low-velocity layers that represent the NCB and the SCB, respectively. The Northern Sulu Orogen is characterized by the relatively faster p-waves, which result from the influence of collision and exhumation. The undulating interfaces together reveal that the southern and northern boundaries of the Northern Sulu Orogen are deep faults that deeply cut through the Moho and have northwest dips in the middle and lower crust. The different crustal nature of three regions suggests that the NCB and SCB crusts have different responses to the continental collision. Our observations, combined with data from previous studies, support that the Northern Sulu Orogen developed during the Indosinian Orogeny, with a northward subduction polarity of the SCB beneath the NCB.
WOS关键词SOUTH YELLOW SEA ; PRESSURE METAMORPHIC ROCKS ; LU FAULT ZONE ; LITHOSPHERIC STRUCTURE ; CONTINENTAL COLLISION ; WAVE VELOCITY ; CHINA CRATON ; SUBDUCTION ; BENEATH ; BELT
资助项目National Natural Science Foundation of China[41806048] ; National Natural Science Foundation of China[412100051] ; Open Fund of the Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences[MGE2018KG11] ; National High Technique RD Program (863)[2009AA093401] ; Aoshan Science and Technology Innovation Project of Qingdao National Laboratory of Marine Science and Technology[2015ASKJ03] ; Fundamental Research Funds for the Central Universities[31020190QD032]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000498329500003
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Fund of the Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences ; Open Fund of the Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences ; National High Technique RD Program (863) ; National High Technique RD Program (863) ; Aoshan Science and Technology Innovation Project of Qingdao National Laboratory of Marine Science and Technology ; Aoshan Science and Technology Innovation Project of Qingdao National Laboratory of Marine Science and Technology ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Fund of the Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences ; Open Fund of the Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences ; National High Technique RD Program (863) ; National High Technique RD Program (863) ; Aoshan Science and Technology Innovation Project of Qingdao National Laboratory of Marine Science and Technology ; Aoshan Science and Technology Innovation Project of Qingdao National Laboratory of Marine Science and Technology ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Fund of the Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences ; Open Fund of the Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences ; National High Technique RD Program (863) ; National High Technique RD Program (863) ; Aoshan Science and Technology Innovation Project of Qingdao National Laboratory of Marine Science and Technology ; Aoshan Science and Technology Innovation Project of Qingdao National Laboratory of Marine Science and Technology ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Fund of the Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences ; Open Fund of the Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences ; National High Technique RD Program (863) ; National High Technique RD Program (863) ; Aoshan Science and Technology Innovation Project of Qingdao National Laboratory of Marine Science and Technology ; Aoshan Science and Technology Innovation Project of Qingdao National Laboratory of Marine Science and Technology ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities
源URL[http://ir.iggcas.ac.cn/handle/132A11/95812]  
专题地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者Wu, Zhiqiang
作者单位1.Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Shandong, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
3.China Geol Survey, Nanjing Ctr, Nanjing 210016, Jiangsu, Peoples R China
4.Qingdao Inst Marine Geol, Qingdao 266071, Shandong, Peoples R China
5.Guangdong Ocean Univ, Guangdong Prov Key Lab Coastal Ocean Variat & Dis, Zhanjiang 524088, Peoples R China
6.Northwestern Polytech Univ, Sch Marine Sci & Technol, Xian 710072, Shaanxi, Peoples R China
7.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Shandong, Peoples R China
8.Northwestern Polytech Univ, Qingdao Res Inst, Qingdao 266200, Shandong, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Weina,Wang, Huigang,Shi, Hongcai,et al. Crustal structure from onshore-offshore wide-angle seismic data: Application to Northern Sulu Orogen and its adjacent area[J]. TECTONOPHYSICS,2019,770:12.
APA Zhao, Weina.,Wang, Huigang.,Shi, Hongcai.,Xie, Hui.,Wu, Zhiqiang.,...&Zheng, Yanpeng.(2019).Crustal structure from onshore-offshore wide-angle seismic data: Application to Northern Sulu Orogen and its adjacent area.TECTONOPHYSICS,770,12.
MLA Zhao, Weina,et al."Crustal structure from onshore-offshore wide-angle seismic data: Application to Northern Sulu Orogen and its adjacent area".TECTONOPHYSICS 770(2019):12.

入库方式： OAI收割

来源：地质与地球物理研究所

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