Partial melting process in the upper mantle deduced from morphological and chemical variations of the chromian spinel two-pyroxene symplectite due to progressive partial melting of the Horoman peridotite, Hokkaido, Japan.
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چکیده
منابع مشابه
Near-solidus Melting of the Shallow Upper Mantle: Partial Melting Experiments on Depleted Peridotite
We present the results of melting experiments on a moderately depleted peridotite composition (DMM1) at 10 kbar and 1250±1390 C. Specially designed experiments demonstrate that liquids extracted into aggregates of vitreous carbon spheres maintained chemical contact with the bulk charge down to melt fractions of 0 02±0 04 and approached equilibrium closely. With increasing melt fraction, SiO2, F...
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REE (LREE) into the glass with respect to clinopyroxene, but the A group of chrome-spinel peridotite upper-mantle xenoliths from the reverse for Sr and Y, in both mica-bearing and mica-free parageneses. Lashaine volcano, northern Tanzania, differs from other xenoliths In a mica-bearing melt pocket, Rb and Ba partition preferentially at this locality in containing glassy melt pockets. Modal, min...
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ژورنال
عنوان ژورنال: JOURNAL OF MINERALOGY, PETROLOGY AND ECONOMIC GEOLOGY
سال: 1995
ISSN: 0914-9783,1881-3275
DOI: 10.2465/ganko.90.93