Kinetics of crystal growth in a terrestrial magma ocean

Details Kinetics of crystal growth in a terrestrial magma ocean Kinetics of crystal growth in a terrestrial magma ocean

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....98.5407s&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. E3, p. 5407-5418.

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21

Crystal Growth, Earth Mantle, Kinetics, Magma, Planetary Evolution, Crystallization, Differentiation, Grain Size, Nucleation

Scientific paper

One of the central problems in the differentiation of a terrestrial magma ocean is the problem of crystal sizes. Crystal sizes in a convective magma ocean are controlled by kinetics of nucleation and crystal growth. In contrast with crystallization in other relatively well studied systems, nucleation and crystallization in downward moving magma occur as a result of adiabatic compression, also known as adiabatic 'cooling'. The problem of crystal sizes is solved analytically for an arbitrary crystal growth law. The following assumptions are made: convection is not influenced by the kinetics of nucleation and crystal growth, interface kinetics is the rate controlling mechanism of crystal growth, and the adiabatic cooling is sufficiently slow for the asymptotic solution to be valid.

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