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Mixed Carbonate-Siliciclastic Deposits in a Channel Complex in the Northern South China Sea
Ma, Benjun1,2,3; Wu, Shiguo2,3,4; Mi, Lijun5; Luedmann, Thomas6; Gao, Jinwei2; Gao, Wei1,3; Wu, Shiguo(Chinese Acad Sci, Inst Deep Sea Sci & Engn, Key Lab Marine Georesources & Prospecting, Sanya 572000, Peoples R China)
2018-06-01
Source PublicationJOURNAL OF EARTH SCIENCE
Volume29Issue:3Pages:707-720
Contribution Rank第1完成单位 ; 第2完成单位 ; 第3完成单位 ; 第4完成单位 ; 第5完成单位 ; 第6完成单位
AbstractNew 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.
SubtypeArticle
KeywordSubmarine Channels Mixed Carbonate-siliciclastic Deposits Allochthonous Carbonate Sediment Flux Sedimentology South China Sea
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s12583-018-0830-4
URL查看原文
Indexed BySCI
Language英语
WOS KeywordRIVER-MOUTH BASIN ; DEEP-WATER CHANNELS ; TECTONIC EVOLUTION ; SUBMARINE CHANNEL ; SHELF-MARGIN ; CONTINENTAL-MARGIN ; SINUOUS CHANNELS ; INDIAN-OCEAN ; FAN-VALLEYS ; BAIYUN SAG
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000435629500021
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.idsse.ac.cn/handle/183446/5972
Collection深海科学研究部_深海地球物理与资源研究室
Corresponding AuthorWu, Shiguo; Wu, Shiguo(Chinese Acad Sci, Inst Deep Sea Sci & Engn, Key Lab Marine Georesources & Prospecting, Sanya 572000, Peoples R China)
Affiliation1.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
Recommended Citation
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.,...&Wu, Shiguo.(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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