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学科主题: Materials Science, Multidisciplinary; Multidisciplinary Sciences
题名: Distribution and identification Of the low-velocity layer in the northern South China Sea
作者: Zhao, MH ; Qiu, XL ; Xu, HL ; Shi, XB ; Wu, SM ; Ye, CM ; Xia, SH
通讯作者: mhzhao@scsio.ac.cn
关键词: low-velocity layer ; deep crustal structure ; the northern South China Sea ; OBS/OBH and onshore-offshore seismic experiments
刊名: PROGRESS IN NATURAL SCIENCE
发表日期: 2007
卷: 17, 期:5, 页:591-600
收录类别: sci
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
项目归属: 海洋地质
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.
原文出处: 查看原文
WOS记录号: WOS:000247805800013
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/4484
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Zhao, MH; Qiu, XL; Xu, HL; Shi, XB; Wu, SM; Ye, CM; Xia, SH.Distribution and identification Of the low-velocity layer in the northern South China Sea,PROGRESS IN NATURAL SCIENCE,2007,17(5):591-600
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