Experimental study on the hydration rates of peridotites in the mantle wedge

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  • マントルウェッジにおけるかんらん岩の加水反応速度に関する実験的研究

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Abstract

We conducted hydration experiments of peridotites at 580°C,1.3GPa to investigate the hydration rate of peridotite in the mantle wedge. Orthpyroxene(opx) showed serrated texture ,but olivine(ol) did not show any obvious reaction texture. Thus, hydration rate of opx is probably much higher than that of ol at this condition. Avrami equation was fitted into bulk(peridotite) conversion rate data,and we got the reaction front migration velocity G=1 μm/day.Then, the hydration velocity was compared with the fluid advection velocity by using the characteristic time. Consequently, it is suggested that the modes of porous flow and channel flow are equilibrium and disequilibrium respectively. These flow modes is the same as the assumed flow modes in Iwamori(1998).

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Details 詳細情報について

  • CRID
    1390001205545231616
  • NII Article ID
    10029454353
  • NII Book ID
    AA12444619
  • DOI
    10.14824/jakoka.2011.0.10.0
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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