| 碳酸盐化橄榄岩的电性研究 |
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| 引用本文： | 黄小刚,黄晓葛,白武明.碳酸盐化橄榄岩的电性研究[J].地球物理学报,2012,55(9):3144-3151. |
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| 作者姓名： | 黄小刚 黄晓葛 白武明 |
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| 作者单位： | 1. 中国科学院地质与地球物理研究所地球深部院重点实验室, 北京 100029;2. 中国科学院研究生院, 北京 100049 |
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| 摘 要： | 为进一步探讨上地幔的高导层成因,了解碳酸盐在上地幔电性方面的作用并估算上地幔高导层的碳酸盐含量,本文对不同碳酸盐含量的橄榄岩及玄武岩样品在2~3 GPa、300~1300℃的条件下进行了电性实验研究.研究初步发现:碳酸盐熔体显著增强橄榄岩、玄武岩样品的导电能力;单纯用含硅酸盐熔体的橄榄岩或单纯用含水橄榄岩可能难以解释上地幔某些区域的异常高导现象;同样,单纯用碳酸盐化的橄榄岩可能也难以解释上地幔某些区域的高导现象;上地幔的高导区很可能是碳酸盐熔体、硅酸盐熔体及水的共存区域.
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| 关 键 词： | 碳酸盐 橄榄岩 高导层 |
| 收稿时间： | 2011-12-12 |
Study on the electrical conductivity of carbonated peridotite |
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| HUANG Xiao-Gang
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HUANG Xiao-Ge
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BAI Wu-Ming.Study on the electrical conductivity of carbonated peridotite[J].Chinese Journal of Geophysics,2012,55(9):3144-3151. |
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| Authors: | HUANG Xiao-Gang HUANG Xiao-Ge BAI Wu-Ming |
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| Institution: | 1. Key Laboratory of Earth's Deep interior, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;2. Graduate University, Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | In order to further explore the cause of high conductivity zones and estimate the amount of carbonates in the upper mantle, the impedance measurements of carbonated peridotites and carbonated basalts were carried out at 2~3 GPa pressure and 300~1300℃ temperature. The experimental results indicate that the carbonate melts can enhance the electrical conductivity of peridotites. It is difficult to interpret some extremely high electrical conductivity zones only by the partial melting of silicates or the hydration of peridotites. It is also difficult to interpret this phenomenon only by carbonated peridotite. The extremely high electrical conductivity zone in the upper mantle is likely to be region where silicate melt, carbonate melt and hydrated peridotite coexist. |
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| Keywords: | carbonate peridotites high conductivity zone |
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