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Sedimentary differences between different segments of the continental slope-parallel Central Canyon in the Qiongdongnan Basin on the northern margin of the South China Sea

文献类型：期刊论文

作者Li, Chao1; Ma, Ming1; Lv, Chengfu1; Zhang, Gongcheng2; Chen, Guojun1; Yan, Yingkai1,3; Bi, Guangxu1,3
刊名MARINE AND PETROLEUM GEOLOGY
出版日期2017-12-01
卷号88页码:127-140
关键词Central Canyon Sedimentary Differences Gravity Flows Transformation Qiongdongnan Basin
ISSN号0264-8172
DOI10.1016/j.marpetgeo.2017.08.009
文献子类Article
英文摘要Submarine canyons have been the subject of intense studies in recent years because of their academic significance to studies of climate signals, eustasy and tectonic movement of the neighbouring area and their economic significance for hydrocarbon exploration in deep-water areas. The Central Canyon in the Qiongdongnan Basin runs parallel to the continental slope, and has a length, width and depth of 520 km, 2-15 km and 270-800 m. Using seismic and well log data, we analyses the sedimentary differences and controlling factors of the sediments in the different segments of the Central Canyon. The sediments within the Central Canyon can be subdivided into five phases of the secondary canyon filling. The most typical features of each phase of the secondary canyon are high- and low-density turbidity currents developed in the phase 1-2 of the secondary canyon, the muddy debris flows, turbidity currents and mass transport deposits in the phase 3, the high-density turbidity currents in the phase 4, the hemipelagic mudstone and mass transport deposits in the phase 5. There are four depositional models corresponding to the head area, upstream segment, middle reaches and downstream segment of the Central Canyon were established. It is characterized by muddy matrix-supported conglomerates and thickly massive sandstones with the feature of upward fining and thinning deposited in the head area, the thickly high net to gross sandstone infilled in the upstream segment, the thinly interbedded sandstones and mudstones and muddy mass transport deposits developed in the middle reaches, and the extensive hemi-pelagic mudstone infilled in the downstream segment. The transformation of the debris flows into turbidity currents and high-density turbidity currents into low-density turbidity in the head and upstream segment, supersaturated filling in the upstream segment, extensive developMent of mass transport deposits in the middle reaches, under-compensation filling and widely development of canyon wall collapse in the downstream segment are the main reasons contributing to the sedimentary differences between different segments of the Central Canyon. (C) 2017 Published by Elsevier Ltd.
WOS关键词SUBMARINE CHANNEL SYSTEMS ; MASS-TRANSPORT DEPOSITS ; DEEP-SEA ; SEISMIC GEOMORPHOLOGY ; UPPER MIOCENE ; EVOLUTION ; ARCHITECTURE ; PROVENANCE ; YINGGEHAI ; GEOCHEMISTRY
WOS研究方向Geology
语种英语
WOS记录号WOS:000416186000011
出版者ELSEVIER SCI LTD
资助机构Ministry of Science and Technology of China(2016ZX05026-007-05) ; Ministry of Science and Technology of China(2016ZX05026-007-05) ; Ministry of Science and Technology of China(2016ZX05026-007-05) ; Ministry of Science and Technology of China(2016ZX05026-007-05)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62675]  
专题地质与地球物理研究所_兰州油气中心
通讯作者Ma, Ming
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Lanzhou 730000, Gansu, Peoples R China
2.China Natl Offshore Oil Corp, Res Inst, Beijing 100028, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Li, Chao,Ma, Ming,Lv, Chengfu,et al. Sedimentary differences between different segments of the continental slope-parallel Central Canyon in the Qiongdongnan Basin on the northern margin of the South China Sea[J]. MARINE AND PETROLEUM GEOLOGY,2017,88:127-140.
APA Li, Chao.,Ma, Ming.,Lv, Chengfu.,Zhang, Gongcheng.,Chen, Guojun.,...&Bi, Guangxu.(2017).Sedimentary differences between different segments of the continental slope-parallel Central Canyon in the Qiongdongnan Basin on the northern margin of the South China Sea.MARINE AND PETROLEUM GEOLOGY,88,127-140.
MLA Li, Chao,et al."Sedimentary differences between different segments of the continental slope-parallel Central Canyon in the Qiongdongnan Basin on the northern margin of the South China Sea".MARINE AND PETROLEUM GEOLOGY 88(2017):127-140.

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来源：地质与地球物理研究所

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