Hydrous, Low-carbon Melting of Garnet Peridotite
نویسندگان
چکیده
منابع مشابه
Mineral / melt partitioning of trace elements during hydrous peridotite partial melting
This experimental study examines the mineral/ melt partitioning of incompatible trace elements among high-Ca clinopyroxene, garnet, and hydrous silicate melt at upper mantle pressure and temperature conditions. Experiments were performed at pressures of 1.2 and 1.6 GPa and temperatures of 1,185 to 1,370 C. Experimentally produced silicate melts contain up to 6.3 wt% dissolved H2O, and are satur...
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Interrogating physical processes that occur within the lowermost mantle is a key to understanding Earth's evolution and present-day inner composition. Among such processes, partial melting has been proposed to explain mantle regions with ultralow seismic velocities near the core-mantle boundary, but experimental validation at the appropriate temperature and pressure regimes remains challenging....
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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...
متن کاملWater storage and early hydrous melting of the Martian mantle
We report an experimental investigation of the near-solidus phase equilibria of a water-saturated analog of the Martian mantle. Experiments were performed at low temperatures (700–920 1C) and high pressure (4–7 GPa) using multi-anvil apparatus and piston cylinder device (4 GPa). The results of this study are used to explore the role of water during early melting and chemical differentiation of ...
متن کاملEarly hydrous melting and degassing of the Martian interior
[1] This study investigates the solidus and near-solidus phase relations of a Martian model mantle composition over the pressure range of 1–3 GPa and 775–1000!C. The presence of H2O has a tremendous effect on the solidus temperature of the Martian mantle, which decreases from 975!C at 1 GPa down to 800!C at 3 GPa. We use the results of this experimental investigation to explore the consequences...
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ژورنال
عنوان ژورنال: Journal of Petrology
سال: 2011
ISSN: 0022-3530,1460-2415
DOI: 10.1093/petrology/egr040