Physics
Scientific paper
Jul 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3513302z&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 13, CiteID L13302
Physics
11
Mineral Physics: High-Pressure Behavior, Mineralogy And Petrology: Mineral And Crystal Chemistry (1042), Mineralogy And Petrology: Thermodynamics (0766, 1011, 8411)
Scientific paper
High pressure melting of (Mg,Fe)O ferropericlase, the second most abundant mineral in the Earth's lower mantle, is of fundamental importance for understanding the chemical differentiation, geodynamics and thermal evolution of the Earth's interior. We report the first systematic experimental study of melting behavior in the MgO-FeO system up to 3600 K and 7 GPa, indicating the ideal solution between solid and liquid (Mg,Fe)O in the MgO-rich portion. The zero pressure melting slope of MgO is ~221 K/GPa derived from our resistance heating measurements, which is several times higher than the value from the previous measurements in a CO2-laser heated diamond anvil cell, but consistent with the theoretically predicted melting curves. Our results combined with the previous first-principles simulations suggest that the melting temperature of MgO-rich (Mg,Fe)O is significantly higher than the geotherm through the lower mantle and this would place an upper bound on the solidus of the lower mantle.
Fei Yingwei
Zhang Lianchang
No associations
LandOfFree
Melting behavior of (Mg,Fe)O solid solutions at high pressure does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Melting behavior of (Mg,Fe)O solid solutions at high pressure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Melting behavior of (Mg,Fe)O solid solutions at high pressure will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1318061