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Characteristics of Authigenic Minerals around the Sulfate-Methane Transition Zone in the Methane-Rich Sediments of the Northern South China Sea: Inorganic Geochemical Evidence

文献类型：期刊论文

作者Wu, Daidai1,2,3; Sun, Tiantian2,4; Xie, Rui1,2; Pan, Mengdi2; Chen, Xuegang4; Ye, Ying4; Liu, Lihua2; Wu, Nengyou3,5
刊名INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
出版日期2019-07-01
卷号16期号:13页码:18
ISSN号1660-4601
关键词authigenic minerals anaerobic oxidation of methane chromium reducible sulfur methane seepage South China Sea
DOI10.3390/ijerph16132299
通讯作者Sun, Tiantian(21534036@zju.edu.cn)
英文摘要Sediments at marine cold seep areas provide potential archives of past fluid flow, which allow insights into the evolution of past methane seepage activities. However, signals for anaerobic oxidation of methane (AOM) might be obscured in bulk sediments in cold-seep settings due to several factors, especially flood and turbidite deposition. Comprehensive inorganic data were gathered in this study to explore the availability of related records at cold seeps and to provide insights into the evolution of past methane seepage activities. Sediments collected from the site 973-4 in the Taixinan Basin on the northern slope of the South China Sea were characterized in terms of total carbon and sulfur, delta C-13 values of total organic carbon (delta C-13(TIC)), delta S-34 values of chromium reducible sulfur (delta S-34(CRS)), and foraminiferal oxygen and carbon isotopes. The results confirmed a strong correlation between formation of authigenic minerals and AOM. Moreover, the S-34 enrichments and abundant chromium reducible sulfur (CRS) contents in the authigenic sulfides in the sulfate-methane transition zone (SMTZ) within 619-900 cm below seafloor (cmbsf) reflected past high methane fluxes supported by constant methane seepages. Lithological distribution and AMS (Accelerator Mass Spectra) C-14 dating of planktonic foraminifera show that the turbidite (35.14 ka) was related to a foraminifera-rich interval (Unit II: 440-619 cmbsf) and increased carbonate productivity during the last glacial maximum (LGM). Enrichment of Mo and U was observed accompanied by low contents of nutrient metals (Al, Ti, V, Ni, Fe, Mn, and Cu) in Unit II. The foraminifera-rich interval (Unit II) of cold seep sediments was probably linked to the phenomenon of inconsecutive sedimentary sequence due to the turbidites, which resulted in the lack of Fe, Mn, and Ba enrichment. There is no U enrichment but only Mo enrichment within Unit III, which might be related to H2S produced by AOM during the methane seepages. Based on the above results, it can be speculated that this area has experienced multiple-episodes of methane seep events. Further exploration of AOM should focus on the risks of rapid deposition, especially the impact of turbidity current on sediments.
WOS关键词ANAEROBIC OXIDATION ; COLD SEEPS ; CONTINENTAL-SLOPE ; GAS HYDRATE ; BLACK-SEA ; CARBONATES ; DEEP ; CONSTRAINTS ; INSIGHTS ; SULFUR
资助项目Institution of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences[ISEE2018YB03] ; Special project for marine economy development of Guangdong Province[GDME-2018D002] ; Evaluation and Detection Technology Laboratory of marine mineral resources ; Municipal Science and Technology Program of Guangzhou[201904010311] ; Qingdao National Laboratory for Marine Science and Technology[KC201703]
WOS研究方向Environmental Sciences & Ecology ; Public, Environmental & Occupational Health
语种英语
出版者MDPI
WOS记录号WOS:000477037900048
资助机构Institution of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences ; Special project for marine economy development of Guangdong Province ; Evaluation and Detection Technology Laboratory of marine mineral resources ; Municipal Science and Technology Program of Guangzhou ; Qingdao National Laboratory for Marine Science and Technology
源URL[http://ir.giec.ac.cn/handle/344007/25369]  
专题中国科学院广州能源研究所
通讯作者Sun, Tiantian
作者单位1.Chinese Acad Sci, Inst South China Sea Ecol & Environm Engn, Guangzhou 510301, Guangdong, Peoples R China
2.Chinese Acad Sci, Key Lab Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
3.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Mineral Resources, Qingdao 266071, Shandong, Peoples R China
4.Zhejiang Univ, Ocean Coll, Zhoushan 316021, Peoples R China
5.Qingdao Inst Marine Geol, Key Lab Gas Hydrate, Minist Nat & Resources, Qingdao 266071, Shandong, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Daidai,Sun, Tiantian,Xie, Rui,et al. Characteristics of Authigenic Minerals around the Sulfate-Methane Transition Zone in the Methane-Rich Sediments of the Northern South China Sea: Inorganic Geochemical Evidence[J]. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH,2019,16(13):18.
APA Wu, Daidai.,Sun, Tiantian.,Xie, Rui.,Pan, Mengdi.,Chen, Xuegang.,...&Wu, Nengyou.(2019).Characteristics of Authigenic Minerals around the Sulfate-Methane Transition Zone in the Methane-Rich Sediments of the Northern South China Sea: Inorganic Geochemical Evidence.INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH,16(13),18.
MLA Wu, Daidai,et al."Characteristics of Authigenic Minerals around the Sulfate-Methane Transition Zone in the Methane-Rich Sediments of the Northern South China Sea: Inorganic Geochemical Evidence".INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 16.13(2019):18.

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来源：广州能源研究所

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