IGGCAS OpenIR  > 岩石圈演化国家重点实验室
Characteristics and origin of the Lower Oligocene marine source rocks controlled by terrigenous organic matter supply in the Baiyun Sag, northern South China Sea
Sun, Rui1,2,3,4; Li, Zhong1,2,3; Zhao, Zhigang4; Yang, Haizhang4; Wang, Xiayang5; Zhao, Zhao4
2020-04-01
Source PublicationJOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
ISSN0920-4105
Volume187Pages:15
AbstractTo analyze the dominant factors of the origin of marine source rocks of the northern South China Sea (SCS), this paper focuses on the Lower Oligocene neritic source rocks in the Baiyun Sag of the Pearl River Mouth Basin. This study assesses the source rocks based on the principles and methods of sedimentology, geochemistry, and palynology and data on pyrolysis parameters, biomarker compounds, major and trace elements, and sedimentary organic debris. The paleoproductivity, input of terrigenous organic matter (TOM), redox conditions and sediment flux are characterized by the above parameters. The dominant effects of organic matter (OM) supply, preservation, and dilution on the origin of the source rocks are studied, and a depositional model of the source rocks is established. Finally, the origin of the Lower Oligocene marine source rocks in the northern SCS is clarified. The results show that the main source of the marine source rocks was terrestrial higher plants, while the contribution of planktonic algae was small. The origin of the marine source rocks was strongly controlled by the input of TOM during the depositional period. The source rocks developed in an oxic environment, and the correlation between the redox indices and OM abundance is poor, which indicates that the redox conditions were not the main factor dominating the origin of the source rocks. With an increase in the sediment flux and the barrier formed by low uplifts, the dilution of the OM decreased, and the contact time between OM and oxygen was markedly reduced; therefore, some OM in the oxic bottom water was not oxidized but instead became enriched, thereby forming the source rocks.
KeywordMarine source rocks Terrigenous organic matter Redox conditions Sediment flux Baiyun Sag
DOI10.1016/j.petrol.2019.106821
Funding OrganizationNational Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China
WOS KeywordRIVER MOUTH BASIN ; SEDIMENTATION-RATE ; GEOCHEMICAL CHARACTERIZATION ; DEPOSITIONAL ENVIRONMENT ; CONTINENTAL-MARGIN ; ERLIAN BASIN ; TRACE-METALS ; CARBON ; PRESERVATION ; EVOLUTION
Language英语
Funding ProjectNational Science and Technology Major Project of the Ministry of Science and Technology of China[2016ZX05026-007]
Funding OrganizationNational Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; National Science and Technology Major Project of the Ministry of Science and Technology of China
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Petroleum
WOS IDWOS:000510456900021
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95602
Collection岩石圈演化国家重点实验室
Corresponding AuthorLi, Zhong
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.CNOOC Res Inst Co Ltd, Beijing 100028, Peoples R China
5.PetroChina, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China
First Author AffilicationState Key Laboratory of Lithospheric Evolution
Corresponding Author AffilicationState Key Laboratory of Lithospheric Evolution
Recommended Citation
GB/T 7714
Sun, Rui,Li, Zhong,Zhao, Zhigang,et al. Characteristics and origin of the Lower Oligocene marine source rocks controlled by terrigenous organic matter supply in the Baiyun Sag, northern South China Sea[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,2020,187:15.
APA Sun, Rui,Li, Zhong,Zhao, Zhigang,Yang, Haizhang,Wang, Xiayang,&Zhao, Zhao.(2020).Characteristics and origin of the Lower Oligocene marine source rocks controlled by terrigenous organic matter supply in the Baiyun Sag, northern South China Sea.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,187,15.
MLA Sun, Rui,et al."Characteristics and origin of the Lower Oligocene marine source rocks controlled by terrigenous organic matter supply in the Baiyun Sag, northern South China Sea".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 187(2020):15.
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