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Distribution and identification Of the low-velocity layer in the northern South China Sea
Zhao, MH; Qiu, XL; Xu, HL; Shi, XB; Wu, SM; Ye, CM; Xia, SH; mhzhao@scsio.ac.cn
2007
发表期刊PROGRESS IN NATURAL SCIENCE
ISSN1002-0071
卷号17期号:5页码:591-600
摘要The low-velocity layer (LVL), closely related with tectonic activities and dynamic settings, has always been a hot topic in the deep crustal structure studies. The deep seismic (OBS/OBH) and onshore-offshore experiments have been extensively implemented in the northern South China Sea (SCS) since the 1990s. Six seismic profiles were finished on the northern margin of SCS by domestic and international cooperations. The features of crustal structures were revealed and five velocity-inversion layers were discovered. Among them three LVLs with 3.0-3.5 km.s(-1) velocity are located in the sedimentary structure (2.0-6.0 km in depth and 2.0-4.6 km in thickness) of the Yinggehai Basin and Pearl River Mouth Basin. They were identified by the reflective and refractive phases for their shallow depth. The other two LVLs with 5.5-6.0 km.s(-1) velocity generally existed in the middle crust (7.0-18.0 km in depth) with an about 2.5-6.0 km thickness in the transitional crustal structure of the northeastern and northwestern SCS. They were detected by the refractive phase from their overlain and underlying layers. We explored the possible tectonic formation mechanisms combining with previously reported results, which provided evidence for the formation and evolution of SCS.
部门归属Chinese Acad Sci, S China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China; Earthuake Adm Guangdong Prov, Guangzhou 510070, Guangdong, Peoples R China
关键词Low-velocity Layer Deep Crustal Structure The norThern South China Sea Obs/obh And Onshore-offshore Seismic Experiments
学科领域Materials Science, Multidisciplinary ; Multidisciplinary Sciences
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收录类别sci
资助项目海洋地质
WOS记录号WOS:000247805800013
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文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/4484
专题中科院边缘海地质重点实验室
通讯作者mhzhao@scsio.ac.cn
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GB/T 7714
Zhao, MH,Qiu, XL,Xu, HL,et al. Distribution and identification Of the low-velocity layer in the northern South China Sea[J]. PROGRESS IN NATURAL SCIENCE,2007,17(5):591-600.
APA Zhao, MH.,Qiu, XL.,Xu, HL.,Shi, XB.,Wu, SM.,...&mhzhao@scsio.ac.cn.(2007).Distribution and identification Of the low-velocity layer in the northern South China Sea.PROGRESS IN NATURAL SCIENCE,17(5),591-600.
MLA Zhao, MH,et al."Distribution and identification Of the low-velocity layer in the northern South China Sea".PROGRESS IN NATURAL SCIENCE 17.5(2007):591-600.
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