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首页> 外文期刊>The American mineralogist >Electrical conductivity of mudstone (before and after dehydration at high P-T) and a test of high conductivity layers in the crust
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Electrical conductivity of mudstone (before and after dehydration at high P-T) and a test of high conductivity layers in the crust

机译：泥岩（高p-T之前和脱水前后）的电导率和地壳中高电导层的试验

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摘要

The electrical conductivity of mudstone before and after dehydration was measured using complex impedance spectroscopy in the frequency range of 10(-1) to 10(6) Hz, and the experiments were carried out at 0.5-2.5 GPa and 623-973 K. Before and after dehydration, the electrical conductivity of mudstone and temperature followed an Arrhenius relation. The influence of pressure on electrical conductivity was weaker than that of temperature. The conductivity slightly increased with increasing pressure. Dehydration at 760-800 K dramatically enhanced the electrical conductivity of mudstone; the dehydration temperature decreased slightly with increasing pressure. Hydrogen-related lattice defects (e.g., H'(M) or H-center dot) are proposed to be the main charge carriers in the mudstone sample before dehydration, whereas H+ and OH- are suggested to be the main charge carriers in the dehydration product of mudstone. Finally, the electrical conductivity of the dehydration product of mudstone can be used to interpret high-conductivity layers (HCLs) associated with the Hope and Porters Pass fault zones in Marlborough, New Zealand.
机译：使用频率范围内的频率范围为10（1）至10（6）Hz的复合阻抗谱前和脱水前后的导电率，并且实验在0.5-2.5GPa和623-973k。之前进行脱水后，泥岩和温度的导电率遵循阿列尼乌斯关系。压力对电导率的影响弱于温度。随着压力的增加，电导率略微增加。 760-800 K的脱水显着提高了泥岩的电导率;脱水温度随着压力的增加而略微降低。提出氢相关的晶格缺陷（例如，H'（M）或H中心点）是脱水前泥岩样品中的主电荷载体，而H +和OH-被建议是脱水中的主电荷载体泥岩产品。最后，泥岩的脱水产物的电导率可用于解释与新西兰马尔伯勒中马尔伯勒的密封件相关的高电导率层（HCLS）。

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  • 来源
    《The American mineralogist》 |2017年第12期|共7页
  • 作者

    Sun Wenqing; Dai Lidong; Li Heping; Hu Haiying; Wu Lei; Jiang Jianjun;

  • 作者单位

    Chinese Acad Sci Inst Geochem Key Lab High Temp &

    High Pressure Study Earths In Guiyang 550081 Guizhou Peoples R China;

    Chinese Acad Sci Inst Geochem Key Lab High Temp &

    High Pressure Study Earths In Guiyang 550081 Guizhou Peoples R China;

    Chinese Acad Sci Inst Geochem Key Lab High Temp &

    High Pressure Study Earths In Guiyang 550081 Guizhou Peoples R China;

    Chinese Acad Sci Inst Geochem Key Lab High Temp &

    High Pressure Study Earths In Guiyang 550081 Guizhou Peoples R China;

    Chinese Acad Sci Inst Geochem Key Lab High Temp &

    High Pressure Study Earths In Guiyang 550081 Guizhou Peoples R China;

    Chinese Acad Sci Inst Geochem Key Lab High Temp &

    High Pressure Study Earths In Guiyang 550081 Guizhou Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 矿物学;
  • 关键词

    Electrical conductivity; mudstone; high pressure; dehydration; conduction mechanism; high-conductivity layer;

    机译：电导率;泥岩;高压;脱水;传导机制;高导电层;

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