Electrical conductivity of brine-bearing quartzite at 1 GPa: Implications for fluid content and salinity of the crust

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    Abstract

    The electrical conductivity of brine-bearing quartzite with fluid fractions of 0.19 to 0.30 and salinity of 3 to 17 wt.% was measured at 800 to 1,100 K and 1 GPa. The conductivity of the brine-bearing quartzite increases with salinity and fluid fraction, but is almost independent of temperature. Our results suggest that regions of high conductivity (10-3 to 10-2 S/m) in the crust could be explained by the presence of quartzite with fluids of salinity similar to that of seawater. To account for those regions with the highest conductivity of 10-1 S/m, quartzite with fluid of high salinity (>10 wt.%) is required.

    Original languageEnglish
    Article number2
    JournalEarth, Planets and Space
    Volume66
    Issue number1
    DOIs
    Publication statusPublished - Dec 2014

    Keywords

    • Brine
    • Electrical conductivity
    • Fluid
    • High-conductivity anomaly

    ASJC Scopus subject areas

    • Geology
    • Space and Planetary Science

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