Depositional characteristics and spatial distribution of deep-water sedimentary systems on the northwestern middle-lower slope of the Northwest Sub-Basin, South China Sea

doi:10.1007/s11001-013-9191-7

GIEC OpenIR > 中国科学院广州能源研究所

	Depositional characteristics and spatial distribution of deep-water sedimentary systems on the northwestern middle-lower slope of the Northwest Sub-Basin, South China Sea
	Chen, Hui 1,2; Xie, Xinong 1; Van Rooij, David 2; Vandorpe, Thomas 2; Huang, Li 1; Guo, Laiyuan 1; Su, Ming 3,4
	2013-12-01
发表期刊	MARINE GEOPHYSICAL RESEARCH
卷号	34 期号:3-4 页码:239-257
摘要	Based upon 2D seismic data, this study confirms the presence of a complex deep-water sedimentary system within the Pliocene-Quaternary strata on the northwestern lower slope of the Northwest Sub-Basin, South China Sea. It consists of submarine canyons, mass-wasting deposits, contourite channels and sheeted drifts. Alongslope aligned erosive features are observed on the eastern upper gentle slopes (< 1.2A degrees above 1,500 m), where a V-shaped downslope canyon presents an apparent ENE migration, indicating a related bottom current within the eastward South China Sea Intermediate Water Circulation. Contourite sheeted drifts are also generated on the eastern gentle slopes (similar to 1.5A degrees in average), below 2,100 m water depth though, referring to a wide unfocused bottom current, which might be related to the South China Sea Deep Water Circulation. Mass wasting deposits (predominantly slides and slumps) and submarine canyons developed on steeper slopes (> 2A degrees), where weaker alongslope currents are probably dominated by downslope depositional processes on these unstable slopes. The NNW-SSE oriented slope morphology changes from a three-stepped terraced outline (I-II-III) east of the investigated area, into a two-stepped terraced (I-II) outline in the middle, and into a unitary steep slope (II) in the west, which is consistent with the slope steepening towards the west. Such morphological changes may have possibly led to a westward simplification of composite deep-water sedimentary systems, from a depositional complex of contourite depositional systems, mass-wasting deposits and canyons, on the one hand, to only sliding and canyon deposits on the other hand.
文章类型	Article
关键词	Deep-water Sedimentation Bottom Current Contourite Mass-wasting Deposits South China Sea
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1007/s11001-013-9191-7
研究领域[WOS]	Geochemistry & Geophysics ; Oceanography
关键词[WOS]	CONTINENTAL-MARGIN ; INTERMEDIATE WATER ; NORTHERN ; WAVES ; CIRCULATION ; INTRUSION ; CLASSIFICATION ; STRATIGRAPHY ; MORPHOLOGY ; PRODUCTS
收录类别	SCI
语种	英语
WOS类目	Geochemistry & Geophysics ; Oceanography
WOS记录号	WOS:000328450000007
引用统计	被引频次：22[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/9148
专题	中国科学院广州能源研究所
作者单位	1.China Univ Geosci, Fac Resources, Minist Educ, Key Lab Tecton & Petr Resources, Wuhan 430074, Peoples R China 2.Univ Ghent, Renard Ctr Marine Geol, Dept Geol & Soil Sci, B-9000 Ghent, Belgium 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China 4.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Chen, Hui,Xie, Xinong,Van Rooij, David,et al. Depositional characteristics and spatial distribution of deep-water sedimentary systems on the northwestern middle-lower slope of the Northwest Sub-Basin, South China Sea[J]. MARINE GEOPHYSICAL RESEARCH,2013,34(3-4):239-257.
APA	Chen, Hui.,Xie, Xinong.,Van Rooij, David.,Vandorpe, Thomas.,Huang, Li.,...&Su, Ming.(2013).Depositional characteristics and spatial distribution of deep-water sedimentary systems on the northwestern middle-lower slope of the Northwest Sub-Basin, South China Sea.MARINE GEOPHYSICAL RESEARCH,34(3-4),239-257.
MLA	Chen, Hui,et al."Depositional characteristics and spatial distribution of deep-water sedimentary systems on the northwestern middle-lower slope of the Northwest Sub-Basin, South China Sea".MARINE GEOPHYSICAL RESEARCH 34.3-4(2013):239-257.