SCSIO OpenIR  > 中科院边缘海地质重点实验室
Crustal structure of Xisha block and its tectonic attributes
Guo Xiao-Ran; Zhao Ming-Hui; Huang Hai-Bo; Qiu Xue-Lin; Wang Jian; He En-Yuan; Zhang Jia-Zheng; Guo, XR; Zhao, MH (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China.; Guo, XR (reprint author), Earthquake Adm Fujian Prov, Xiamen Ctr Seismic Survey, Xiamen 361021, Peoples R China.; Guo, XR (reprint author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
2016
发表期刊CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
卷号59期号:4页码:1414-1425
摘要Xisha block, as a micro-continental massif formed during the process of the formation of the South China Sea (SCS), has recorded important information about the evolutionary history of the SCS. The crustal structure, petrological properties and tectonic attributes of Xisha block are critical to the theory of formation and evolution of the SCS. Based on Ocean Bottom Seismometers (OBS) data acquired from Line OBS2013-3, the P-wave velocity model of Xisha block along the line is established employing the ray-tracing and forward travel-time modeling method. This velocity structure shows that the sedimentary layer is various with a velocity of 2. 2 similar to 3. 2 km . s(-1) and a thickness of 0. 8 similar to 3. 0 km. The basement interface is locally rugged and rough. The velocity values of the upper and lower crusts are 5. 0 similar to 6. 4 km . s(-1) and 6. 5 similar to 6. 9 km . s(-1), and the velocity at the top of upper mantle is 8. 0 km . s(-1). The average crustal thickness of Xisha block is about 23 km. The thickness of the upper and lower crust is 9 km and 14 km, respectively. Moho interface lies at the depth of 23 similar to 27 km. Xisha block is a type of thinned continental crust comparing with the South China continental margin and has a size of about 9. 2 x10(5) km(3) calculated from the two perpendicular seismic profiles. Xisha block and Nansha block are distributed on the two sides of the spreading ridge of NW sub-basin. They are conjugate with each other since. their velocity structures are very similar.
部门归属[Guo Xiao-Ran; Zhao Ming-Hui; Huang Hai-Bo; Qiu Xue-Lin; Wang Jian; He En-Yuan; Zhang Jia-Zheng] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China; [Guo Xiao-Ran] Earthquake Adm Fujian Prov, Xiamen Ctr Seismic Survey, Xiamen 361021, Peoples R China; [Guo Xiao-Ran; Wang Jian; He En-Yuan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China ; 边缘海地质
关键词Xisha Block Deep Crustal Structure Thinned Continental Crust Ocean Bottom Seismometer (Obs)
学科领域Geochemistry & Geophysics
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/15589
专题中科院边缘海地质重点实验室
通讯作者Guo, XR; Zhao, MH (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China.; Guo, XR (reprint author), Earthquake Adm Fujian Prov, Xiamen Ctr Seismic Survey, Xiamen 361021, Peoples R China.; Guo, XR (reprint author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
推荐引用方式
GB/T 7714
Guo Xiao-Ran,Zhao Ming-Hui,Huang Hai-Bo,et al. Crustal structure of Xisha block and its tectonic attributes[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2016,59(4):1414-1425.
APA Guo Xiao-Ran.,Zhao Ming-Hui.,Huang Hai-Bo.,Qiu Xue-Lin.,Wang Jian.,...&Guo, XR .(2016).Crustal structure of Xisha block and its tectonic attributes.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,59(4),1414-1425.
MLA Guo Xiao-Ran,et al."Crustal structure of Xisha block and its tectonic attributes".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 59.4(2016):1414-1425.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Crustal structure of(55484KB)期刊论文作者接受稿开放获取CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。