中国科学院南海海洋研究所机构知识库
Advanced  
SCSIO OpenIR  > 热带海洋环境国家重点实验室(LTO)  > 期刊论文
学科主题: Geology ; Oceanography
题名: Depositional characteristics and processes of alongslope currents related to a seamount on the northwestern margin of the Northwest Sub-Basin, South China Sea
作者: Chen, H ; Xie, XN ; Van Rooij, D ; Vandorpe, T ; Su, M ; Wang, DX
通讯作者: hui.chen.cug@gmail.com
关键词: deep-water sedimentation ; bottom current ; obstacle ; contourite ; South China Sea
刊名: MARINE GEOLOGY
发表日期: 2014
卷: 355, 页:36-53
收录类别: sci
部门归属: [Chen, Hui ; Xie, Xinong] China Univ Geosci, Fac Resources, Minist Educ, Key Lab Tecton & Petr Resources, Wuhan 430074, Hubei, Peoples R China ; [Chen, Hui ; Van Rooij, David ; Vandorpe, Thomas] Univ Ghent, Dept Geol & Soil Sci, Renard Ctr Marine Geol, B-9000 Ghent, Belgium ; [Su, Ming] Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China ; [Su, Ming] Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China ; [Wang, Dongxiao] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Environm Dynam, Guangzhou 510640, Guangdong, Peoples R China
项目归属: LTO
资助者: National Natural Science Foundation of China [91028009, 41372112]; National Key Projects of Oil and Gas [2011ZX05025-002-02]; Programme of Introducing Talents of Discipline to Universities [B14031]; Open Fund of the Key Laboratory of Marine Geology and Environment, China Academy of Sciences [MGE2013KG02]; IGCP project [619]; INQUA project [1204]
摘要: This study infers, from 2D seismic data, the presence of a seamount-related deep-water contourite depositional system, located on the northwestern margin of the Northwest Sub-Basin of the South China Sea. Alongslope aligned erosive features and contourite drifts developed in water depths between 1000 and 1500 m on the present seafloor. A moat formed north of the seamount as a result of bottom current intensification after being deflected by an obstacle morphology, indicating a major eastward flowing current. Due to the Coriolis deflection, an elongated-mounded drift developed to the north of the moat and a modest plastered drift to the south (onlapping the north side of the seamount). Bottom currents away from the seamount are less or minimally intensified, generating contourite channels and furrows over the drift to the north of the moat. Combined with the known oceanographic setting, the bottom currents could belong to the anticyclonic South China Sea Intermediate Water circulation. From the seismic data, the architecture of contourite deposits during progressive burial of the seamount is documented. The first appearance of contourite channels in seismic Unit 1 is inferred to be the onset of the contourite depositional system, which could be traced back to the early Late Miocene. The following aggradational pattern of this system, from the base of seismic Unit 2 onwards, indicates relatively enhanced and stable South China Sea Intermediate Water circulation occurring on the northwestern margin of the northern South China Sea. Subsequently, the behaviour and depositional processes of bottom currents upstream and downstream the seamount are discussed. The depositional model suggests that a complex contourite channel system will replace the former moat-drift system once the seamount is buried. Finally, our findings may provide new challenges for investigating the South China Sea Cenozoic palaeoceanography, which are helpful to understand the sedimentary dynamic processes related to the South China Sea deepwater circulation. (C) 2014 Elsevier B.V. All rights reserved.
原文出处: 查看原文
WOS记录号: WOS:000341339600004
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10510
Appears in Collections:热带海洋环境国家重点实验室(LTO)_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
Depositional characteristics and processes of alongslope currents related to a seamount on the northwestern margin of the Northwest Sub-Basin, South China Sea.pdf(6128KB)----开放获取View Download

Recommended Citation:
Chen, H; Xie, XN; Van Rooij, D; Vandorpe, T; Su, M; Wang, DX.Depositional characteristics and processes of alongslope currents related to a seamount on the northwestern margin of the Northwest Sub-Basin, South China Sea,MARINE GEOLOGY,2014,355():36-53
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Chen, H]'s Articles
[Xie, XN]'s Articles
[Van Rooij, D]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Chen, H]‘s Articles
[Xie, XN]‘s Articles
[Van Rooij, D]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: Depositional characteristics and processes of alongslope currents related to a seamount on the northwestern margin of the Northwest Sub-Basin, South China Sea.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院南海海洋研究所 - Feedback
Powered by CSpace