Trace element systematics in cold seep carbonates and associated lipid compounds
文献类型：期刊论文
| 作者 | Wang, Xudong; Bayon, Germain; Kim, Jung-Hyun; Lee, Dong-Hun; Kim, Dahae; Gueguen, Bleuenn; Rouget, Marie-Laure; Barrat, Jean-Alix; Toffin, Laurent; Feng, Dong |
| 刊名 | CHEMICAL GEOLOGY
 |
| 出版日期 | 2019 |
| 卷号 | 528页码:UNSP 119277 |
| 关键词 | Seep carbonate Lipid compounds Trace elements Tungsten Nickel Cobalt Molybdenum |
| DOI | 10.1016/j.chemgeo.2019.119277 |
| 英文摘要 | Seeping of methane-rich fluids at submarine cold seeps drives intense microbial activity and precipitation of authigenic carbonates. Some trace elements play an important role in the biogeochemical processes operating at cold seeps, especially as specific enzymatic co-factors related to methanogenesis and the anaerobic oxidation of methane (AOM). However, it is unclear whether microbial trace metal utilization can be traced by the geochemical composition of seep carbonates. In this study, we analyzed a series of authigenic carbonate samples recovered from various seep settings worldwide and report for the first time trace element concentrations for total lipid fractions, combined with biomarker analyses and determination of elemental abundances in associated inorganic mineral phases (carbonate phases, sulfides, organic compounds and detrital fractions). Our results indicate marked enrichments of Co, Ni, Cu, Mo and W in the archaeal and bacterial lipids associated with authigenic carbonates, which can all be ascribed to previously identified enzymatic pathways. In addition to the microbial communities involved in AOM, which most likely control specific lipid-bound enrichments of Co, Ni, Mo and W in seep carbonates, Cu was found to display higher concentrations in the lipid fractions extracted from a few authigenic carbonate samples formed closer to the sediment-water interface, hence possibly related to the presence of aerobic methane-oxidizing bacterial assemblages in the near seafloor environment. While the above mentioned trace metals are relatively enriched in all studied inorganic and organic fractions, the very low W concentrations measured in carbonate phases, combined with their pronounced enrichment in associated lipid fractions and inferred microbial requirement, suggest that tungsten depletion in pore waters could possibly act as a limiting factor on AOM at cold seeps. Finally, two other trace elements (Li and Ti) also displayed particular enrichments in studied lipid fractions, which, despite no reported evidence, could possibly indicate that they are also involved as metalloenzymes in microbial methane oxidation processes at cold seeps. |
| 资助机构 | IFREMER; National Research Foundation of Korea (NRF) - Ministry of Science and ICT (MSIT) - South Korea [NRF-2016R1A2B3015388, KOPRI-PN19100, NRF-2015M1A5A1037243, KOPRI-PN19090]; National Key Research and Development Program of China [2018YFC0310003]; National Program on Global Change and Air-Sea Interaction [GASI-GEOGE-05-04]; NSF of ChinaNational Natural Science Foundation of China (NSFC) [41773091, 41730528, 41761134084] ; IFREMER; National Research Foundation of Korea (NRF) - Ministry of Science and ICT (MSIT) - South Korea [NRF-2016R1A2B3015388, KOPRI-PN19100, NRF-2015M1A5A1037243, KOPRI-PN19090]; National Key Research and Development Program of China [2018YFC0310003]; National Program on Global Change and Air-Sea Interaction [GASI-GEOGE-05-04]; NSF of ChinaNational Natural Science Foundation of China (NSFC) [41773091, 41730528, 41761134084] |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18240]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 推荐引用方式 GB/T 7714 | Wang, Xudong,Bayon, Germain,Kim, Jung-Hyun,et al. Trace element systematics in cold seep carbonates and associated lipid compounds[J]. CHEMICAL GEOLOGY,2019,528:UNSP 119277. |
| APA | Wang, Xudong.,Bayon, Germain.,Kim, Jung-Hyun.,Lee, Dong-Hun.,Kim, Dahae.,...&Feng, Dong.(2019).Trace element systematics in cold seep carbonates and associated lipid compounds.CHEMICAL GEOLOGY,528,UNSP 119277. |
| MLA | Wang, Xudong,et al."Trace element systematics in cold seep carbonates and associated lipid compounds".CHEMICAL GEOLOGY 528(2019):UNSP 119277. |
入库方式： OAI收割
来源：南海海洋研究所
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