Geochemical Characteristics and Significance of Organic Matter in Hydrate-Bearing Sediments from Shenhu Area, South China Sea

Rock-Eval pyrolysis and the biomarker composition of organic matter were systematically studied in hydrate-bearing sediments from the Shenhu area, South China Sea. The n-alkane distribution patterns revealed that the organic matter in the sediments appeared to originate from mixed sources of marine...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2022-04, Vol.27 (8), p.2533
Main Authors: Li, Yuanyuan, Pang, Lei, Wang, Zuodong, Meng, Qianxiang, Guan, Ping, Xu, Xuemin, Fang, Yunxin, Lu, Hailong, Ye, Jianliang, Xie, Wenwei
Format: Article
Language:English
Subjects:
Alkanes
Biodegradation
Biomarkers
Carbon
China
Composition
Environmental Monitoring - methods
gas hydrate
Gases
Geochemistry
Geologic Sediments - chemistry
Geology
Hydrocarbons
Hydrocarbons - analysis
Methanogenic bacteria
Microorganisms
Natural gas
Organic carbon
Organic matter
Pyrolysis
Rock-Eval
Rocks
Sediments
South China Sea
Terrestrial environments
Total organic carbon
Water Pollutants, Chemical - analysis
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Summary:Rock-Eval pyrolysis and the biomarker composition of organic matter were systematically studied in hydrate-bearing sediments from the Shenhu area, South China Sea. The n-alkane distribution patterns revealed that the organic matter in the sediments appeared to originate from mixed sources of marine autochthonous input, terrestrial higher plants, and ancient reworked organic matter. The low total organic carbon contents (average < 0.5%) and the low hydrogen index (HI,
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules27082533