| 黔中白云岩同化剖面的铅同位素组成及物源的指示 |
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| 引用本文： | 季宏兵,王世杰. 黔中白云岩同化剖面的铅同位素组成及物源的指示[J]. 地质论评, 2011, 57(1): 109-117 |
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| 作者姓名： | 季宏兵 王世杰 |
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| 作者单位： | 首都师范大学资源环境与GIS北京市重点实验室;中国科学院地球化学研究所环境地球化学国家重点实验室; |
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| 基金项目： | 国家自然科学基金资助项目(批准号41073096,40473051); 国家重点基础研究计划(批准号2006BC403200); 中国科学院地球化学研究所环境地球化学国家重点实验室资助项目的成果 |
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| 摘 要： | 碳酸盐岩上覆红土的形成模式是一个争议的问题,尤其是形成该红土的物质来源争议最大.本文对贵州中部平坝剖面进行了铅同位素的综合分析,结果显示全岩样品的Pb同位素组成显示是以长石矿物为主的"普通铅",下伏三叠纪白云岩样品的n(206Pb)/n(204Pb)为19.29,风化剖面全土样品的n(206Pb)/n(204Pb)约为...
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| 关 键 词： | 铅同位素 化学风化组分 白云岩风化剖面 贵州 |
Pb Isotopic Compositions and Material Sources for Dolomite Weathering Profile in Centrial Guizhou and Indication |
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| JI Hongbing,WANG Shijie. Pb Isotopic Compositions and Material Sources for Dolomite Weathering Profile in Centrial Guizhou and Indication[J]. Geological Review, 2011, 57(1): 109-117 |
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| Authors: | JI Hongbing WANG Shijie |
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| Affiliation: | JI Hongbing1,2),WANG Shijie2)1) The Key Laoratory of Environmental Rources and GIS in Beijing,College of Resource Environment and Tourism,Capital Normal University,Beijing,100048,2) The Key laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang,550002 |
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| Abstract: | It is a disputed question for forming and evolution of red residua on the surface of carbonate rocks,particular for their material sources. The authors have conducted a comprehensive analysis of Pb isotopes for the Pingba profile in Centrial Guizhou. The Pb isotopic composition of the whole-rock samples showed that the lead is dominated by feldspar mineral-derived common lead,with n(206Pb)/n(204Pb) being about 19.29 and 19.04~20.56 for dolomite and soil samples,respectively,greatly different from the Pb iso... |
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| Keywords: | Pb isotope chemical weathering component dolomite weathering profile Guizhou |
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