Experimental rates of dehydration of shocked and unshocked serpentine were determined using a differential scanning calorimetric technique. Dehydration rates in shocked serpentine are enhanced by orders of magnitude over corresponding rates in unshocked material, even though the impact experiments were carried out under conditions that inhibited direct impact-induced devolatilization. Extrapolation to temperatures of the Martian surface indicates that dehydration of shocked material would occur 20 to 30 orders of magnitude more rapidly than for unshocked serpentine. The results indicate that impacted planetary surfaces and associated atmospheres would reach chemical equilibrium much more quickly than calculations based on unshocked material would indicate, even during the earliest, coldest stages of accretion. Furthermore, it is suggested that chemical weathering of shocked planetary surfaces by solid-gas reactions would be sufficiently rapid that true equilibrium mineral assemblages should form.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Dehydration kinetics of shocked serpentine


    Contributors:

    Conference:

    Lunar and Planetary Science Conference ; 1987 ; Houston, TX, United States


    Publication date :

    1988-01-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




    Serpentine-Pavillon

    Brensing, Christian | Online Contents | 2012


    Dehydration kinetics of hydrohalite

    Johnson, Paul V. / Hodyss, Robert / Jost, Bernhard | NTRS | 2018


    Serpentine-Pavillon

    Brensing, Christian | Online Contents | 2012


    SERPENTINE ROBOTIC CRAWLER

    SMITH FRASER M | European Patent Office | 2019

    Free access

    Serpentine Pavilion 2008

    Online Contents | 2008