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Phosphorus Species in Deep-Sea Carbonate Deposits: Implications for Phosphorus Cycling in Cold Seep Environments

文献类型：期刊论文

作者Zhou, Junlie2,3; Du, Mengran3; Li, Jiwei3; Xu, Hengchao3; Ta, Kaiwen1,3; Chen, Shun3; Peng, Xiaotong3
刊名MINERALS
出版日期2020-07-01
卷号10期号:7页码:17
关键词seep carbonates phosphorus species phosphorus cycling anaerobic oxidation of methane cold seep environments
DOI10.3390/min10070645
英文摘要Phosphorus (P) is an important nutrient for biological communities in cold seeps. However, our knowledge on the source, species, and cycling of P in cold seep environments is limited. In this study, the concentration, species, and micro to nanometer scale distribution of P in seep carbonates were examined at three deep-sea cold seeps in the South China Sea and East China Sea. The Ca-P accounts for the largest proportion of P-followed by detrital-P, Fe-P, organic-P, and exchangeable-P. The distribution patterns of Ca-P, detrital-P, and organic-P in the seep carbonates differ from one another, as shown by elemental mapping with NanoSIMS and scanning electron microscopy. The covariation of P with Ca and C reveals that Ca-P co-precipitates with Ca-carbonate, which is linked to the process of sulfate-driven anaerobic oxidation of methane. Organic-P is also observed within biofilm-like organic carbon aggregates, revealing the microbial enrichment of P by fluids in the process of anaerobic oxidation of methane. P with a granulated morphology was identified as detrital-P derived from deep sediments. Most importantly, it is evident that Ca-P is positively correlated to the Fe content in all the seep carbonates. This indicates the likelihood that the dissolved P in cold-seep fluids is released primarily from Fe oxides through Fe-driven anaerobic oxidation of methane in deep sediments. These processes associated with different species of P may have significant implications for P geochemical cycling and anaerobic oxidation of methane impelled by Fe and sulfate reduction in cold seep environments.
WOS关键词AUTHIGENIC APATITE FORMATION ; DRIVEN ANAEROBIC OXIDATION ; SOUTH CHINA SEA ; IRON REDUCTION ; FLUID SOURCES ; MUD VOLCANO ; METHANE ; SEDIMENTS ; SULFUR ; VIVIANITE
资助项目National Key Research and Development Program of China[2017YFC0306702] ; National Key Research and Development Program of China[2016YFC0304900]
WOS研究方向Mineralogy ; Mining & Mineral Processing
语种英语
WOS记录号WOS:000557713000001
出版者MDPI
资助机构National Key Research and Development Program of China
源URL[http://ir.idsse.ac.cn/handle/183446/7861]  
专题深海科学研究部_深海地质与地球化学研究室
研究生部
通讯作者Peng, Xiaotong
作者单位1.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519000, Peoples R China
2.Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Lab Deep Sea Geol & Geochem, Sanya 572000, Peoples R China
推荐引用方式
GB/T 7714		 Zhou, Junlie,Du, Mengran,Li, Jiwei,et al. Phosphorus Species in Deep-Sea Carbonate Deposits: Implications for Phosphorus Cycling in Cold Seep Environments[J]. MINERALS,2020,10(7):17.
APA Zhou, Junlie.,Du, Mengran.,Li, Jiwei.,Xu, Hengchao.,Ta, Kaiwen.,...&Peng, Xiaotong.(2020).Phosphorus Species in Deep-Sea Carbonate Deposits: Implications for Phosphorus Cycling in Cold Seep Environments.MINERALS,10(7),17.
MLA Zhou, Junlie,et al."Phosphorus Species in Deep-Sea Carbonate Deposits: Implications for Phosphorus Cycling in Cold Seep Environments".MINERALS 10.7(2020):17.

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来源：深海科学与工程研究所

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