Mixed Carbonate-Siliciclastic Deposits in a Channel Complex in the Northern South China Sea

doi:10.1007/s12583-018-0830-4

IOCAS-IR > 海洋地质与环境重点实验室

	Mixed Carbonate-Siliciclastic Deposits in a Channel Complex in the Northern South China Sea
	Ma, Benjun1,2,3 ; Wu, Shiguo 2,3,4; Mi, Lijun 5; Luedmann, Thomas 6; Gao, Jinwei2 ; Gao, Wei 1,3
	2018-06-01
发表期刊	JOURNAL OF EARTH SCIENCE
ISSN	1674-487X
卷号	29 期号:3 页码:707-720
通讯作者	Wu, Shiguo([email protected])
摘要	New high-resolution 3D seismic data image a submarine channel complex in the northern slope of the South China Sea. The channel complex stretches hundreds of kilometers across the slope and flows into the deepsea from the siliciclastic shelf margin, linking neritic environment to the pelagic plain. The evolution of the channel complex developed two sedimentary stages, stage I (19.1-18.5 Ma) and stage II (18.5-17.5 Ma), separated by erosional surfaces. In the first stage, the complex was filled with pure siliciclastic sediments, forming thick-massive sandstone intercalated by thin layers of mudstone. During the stage II, the channel complex was deposited five carbonate-siliciclastic cycles. The unexpected channel-fill carbonate deposits present allochthonous characteristics, suggesting the siliciclastic channel was surprisingly used to transport carbonate sediment from the adjacent neritic carbonate platform. By analyzing the periodical carbonate sedimentary process in the siliciclastic channel complex, we infer that it was related to the in situ carbonate production of the neritic carbonate platform and was most likely to be controlled by the relative sea-level changes. Unlike line-source carbonate slope aprons or small-sized carbonate channels, the large-sized siliciclastic channel complex links directly neritic carbonate platform to deepwater basin and can transport large volumes of neritic carbonates to the pelagic environment in a short period. The new findings help to estimate the contributions of neritic siliciclastic shelf and carbonate platform to deepwater slope more accurately. This study suggests that channel systems are more complex than expected and have significant implications on the conceptual models describing the deepwater sedimentary theory.
关键词	submarine channels mixed carbonate-siliciclastic deposits allochthonous carbonate sediment flux sedimentology South China Sea
DOI	10.1007/s12583-018-0830-4
收录类别	SCI
语种	英语
资助项目	National Basic Research Program of MOST of China[2015CB251201]###1994; National Natural Science Foundation of China[91228208]###1995; National Natural Science Foundation of China[41506055]###396; China Geological Survey[GZH201400210]###1996; China Geological Survey[DD20160140]###1997; National Basic Research Program of MOST of China[2015CB251201]###1994; National Natural Science Foundation of China[91228208]###1995; National Natural Science Foundation of China[41506055]###396; China Geological Survey[GZH201400210]###1996; China Geological Survey[DD20160140]###1997; National Basic Research Program of MOST of China[2015CB251201]; National Natural Science Foundation of China[91228208]; National Natural Science Foundation of China[41506055]; China Geological Survey[GZH201400210]; China Geological Survey[DD20160140]
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000435629500021
出版者	CHINA UNIV GEOSCIENCES, WUHAN
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/159481
专题	海洋地质与环境重点实验室
通讯作者	Wu, Shiguo
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Key Lab Marine Georesources & Prospecting, Sanya 572000, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Marine Geol & Environm, Qingdao 266061, Peoples R China 5.China Natl Offshore Oil Corp, Shenzhen Branch, Guangzhou 510420, Guangdong, Peoples R China 6.Univ Hamburg, Inst Geol, Ctr Earth Syst Res & Sustainabil, D-20146 Hamburg, Germany
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Ma, Benjun,Wu, Shiguo,Mi, Lijun,et al. Mixed Carbonate-Siliciclastic Deposits in a Channel Complex in the Northern South China Sea[J]. JOURNAL OF EARTH SCIENCE,2018,29(3):707-720.
APA	Ma, Benjun,Wu, Shiguo,Mi, Lijun,Luedmann, Thomas,Gao, Jinwei,&Gao, Wei.(2018).Mixed Carbonate-Siliciclastic Deposits in a Channel Complex in the Northern South China Sea.JOURNAL OF EARTH SCIENCE,29(3),707-720.
MLA	Ma, Benjun,et al."Mixed Carbonate-Siliciclastic Deposits in a Channel Complex in the Northern South China Sea".JOURNAL OF EARTH SCIENCE 29.3(2018):707-720.

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