| 东太平洋北部胡安·德富卡洋中脊Mothra热液场硫化物烟囱体成矿物质来源:铅和硫同位素组成 |
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| 引用本文： | 董从芳,周怀阳,彭晓彤,袁远,姚会强.东太平洋北部胡安·德富卡洋中脊Mothra热液场硫化物烟囱体成矿物质来源:铅和硫同位素组成[J].地球化学,2011,40(2):163-170. |
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| 作者姓名： | 董从芳 周怀阳 彭晓彤 袁远 姚会强 |
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| 作者单位： | 中国科学院广州地球化学研究所;同济大学海洋学院海洋地质国家重点实验室;中国科学院研究生院;广西二一五地质队有限公司;广州海洋地质调查局; |
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| 基金项目： | 国家自然科学基金重点项目(40532011) |
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| 摘 要： | 对采自Mothra热液场Faulty Towers硫化物烟囱体群(47°57.447,N,129°06.568W)的一个硫化物烟囱体进行了铅和硫同位素组成的研究工作.分析结果表明,铅同位素组成的分布范围为:206Pb/204Pb=18.665～18.828; 207Pb/204Pb=15.460～15.607; 208...
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| 关 键 词： | 铅同位素组成 硫同位素组成 硫化物烟囱体 Mothra热液场 |
Lead and sulfur isotope constrains for metal sources of sulfide chimneys,Mothra hydrothermal field,Juan de Fuca Ridge,Nothern East Pacific Ocean |
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| DONG Cong-fang,ZHOU Huai-yang,PENG Xiao-tong,YUAN Yuan,YAO Hui-qiang.Lead and sulfur isotope constrains for metal sources of sulfide chimneys,Mothra hydrothermal field,Juan de Fuca Ridge,Nothern East Pacific Ocean[J].Geochimica,2011,40(2):163-170. |
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| Authors: | DONG Cong-fang ZHOU Huai-yang PENG Xiao-tong YUAN Yuan YAO Hui-qiang |
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| Institution: | DONG Cong-fang1,2,3,ZHOU Huai-yang1,PENG Xiao-tong1,YUAN Yuan4 and YAO Hui-qiang5 1.Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China,2.State Key Laboratory of Marine Geology,Marine School,Tongji University,Shanghai 200092,3.Graduate University of Chinese Academy of Sciences,Beijing 100049,4.No.215 Geological Team Co.,Ltd.in Guangxi,Liuzhou 545006,5.Guangzhou Marine Geology Survey,Guangzhou 510760 |
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| Abstract: | The sulfide chimney collected from the Faulty Towers sulfide complexes in Mothra hydrothermal field （47°57447′N,129°06568′w） has been studied for lead and sulfur isotopic compositions. The range of lead isotopic compositions of the samples was：^206Pb/^204Pb=18.665～18.828;^207Pb/^204Pb=15.460～15.607;^208Pb/^204Pb=37.961～38.401. It is observed that lead isotopic compositions changed regularly across the chimney walls, with more radiogenic lead in the outer walls and lower lead isotope compositions in the inner walls and/or across the fluid channels. Sulfur isotopic compositions ranged from 0.4‰to 2.1‰. Marcasite （0.5‰） and sphalerite （1.0‰） from the outer walls were enriched in light sulfur isotopoe, and wurzite had comparatively uniform values ranging from 1.3‰ to 2.1‰. Both lead and sulfur isotope data suggested that substrate basalts were the main metal sources of hydrothermal fluids, with some sedimentary source input. |
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| Keywords: | lead isotopic compostions sulfur isotopic compositons sulfide chimney Mothra hydrothermal field |
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