Physics
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19.1703j&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 19, no. 16, Aug. 21, 1992, p. 1703-1706. Research supported by Japan Society
Physics
13
Composition (Property), Earth Mantle, Magma, Melts (Crystal Growth), Mid-Ocean Ridges, Peridotite, Diamonds, High Pressure, Interstitials
Scientific paper
A new experimental technique is reported that achieves segregation of small percentages of melt from a peridotite source using a porous layer of diamond chips adjacent to the peridotite. With this configuration, experiments were conducted using piston-cylinder apparatus at 15 kb and 1425 C over a range of times. Melts produced by this method do not suffer from crystal growth in the melt upon quenching and, since they are direct products of melting of the peridotite source, do not contain introduced basaltic components as in sandwich techniques. It is shown that while melts produced in short duration runs are not in equilibrium with the residue, equilibrium is approached in the longer duration runs. This new technique may be adapted to address questions of melt generation in the mantle.
Johnson Kevin T. M.
Kushiro Ikuo
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