The permeability-controlled accumulation of primary magma in a planetary mantle

Details The permeability-controlled accumulation of primary magma in a planetary mantle The permeability-controlled accumulation of primary magma in a planetary mantle

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pepi...29..344m&link_type=abstract

(NATO, Advanced Study Institute on Early Evoluton of the Planets and their Atmospheres, Newcastle-upon-Tyne, England, Mar. 23-Ap

Physics

2

Earth Planetary Structure, Planetary Geology, Planetary Mantles, Basalt, Magma, Permeability, Phase Transformations, Planetary Evolution

Scientific paper

The initial accumulation of magma within a partially-molten planetary mantle occurs in three stages. Within a mantle with evenly dispersed minerals the first melt is formed as small drops at grain corners and edges. By increasing degree of partial melting the drops of interstitial liquid become interconnected, whereafter the partially-molten mantle becomes permeable. At the onset of permeability the interstitial melt begins to accumulate in horizontal layers of melt situated tens of meters apart. These layers form the source of magma for the magma chambers that supply magma during eruptions.

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