Journal of Geophysical Research Atmospheres · 1964 · 153 citations · 9 references
Natural SciencesEarth SciencesGeologyGeochemistryMineralogyTectonophysicsMantle GeochemistryMantle PetrologyMineral ThermodynamicsPartial MeltingSilicate MineralogySilicate MineralsExperimental Melting StudiesMantle Melting ProcessesMantle-derived MagmasMineral Physics Of The MantlePressure Dependence Of MeltingPressure-temperature Conditions Of MeltingSilicate Phase EquilibriaSilicate Thermodynamics
The melting curve of forsterite, Mg2SiO4, has been determined at pressures up to 50 kb, using the single-stage apparatus and tungsten/75% tungsten-25% rhenium thermocouples. The curve is linear within the precision of measurement; T = 4.77P + 1898, with P expressed in kilobars, T in degrees Celsius; S.D. = 11 deg. The temperature of melting of forsterite is not so dependent on pressure as that of other silicate minerals, which indicates that the eutectics of silicate systems that have Mg2SiO4 as a component should shift toward Mg2SiO4 with increasing pressure. Partial fusion would yield magmas poorer in silica at greater depths in the mantle.
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N. L. Bowen, J. F. Schairer · American Journal of Science · 1935 · 498 citations
Natural Sciences, Materials Engineering, Materials Science +10
N. L. Bowen, O. Siggaard Andersen · American Journal of Science · 1914 · 334 citations · Full text