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• W1574094573 endingPage "119" @default.
• W1574094573 startingPage "91" @default.
• W1574094573 abstract "Crystallization and chemical differentiation of the early Earth was governed by a combination of various processes. Within the uncertainties of physical parameters, the two end-member models, equilibrium crystallization and fractional crystallization, are both possible. In terms of crystal size, the boundary between these models is ∼1 mm. Analysis of nucleation and crystal growth in the convecting magma ocean suggests that the crystals in the magma ocean are approximately this size. The equilibrium model is preferred because it seems to satisfy better the geochemical constraints. According to this model, at the early stages crystallization proceeds from bottom up without any substantial crystal-melt segregation. In a vigorously convecting magma ocean the thermal profile is approximately adiabatic and the crystal fraction decreases gradually with depth. The basic physical reason for equilibrium crystallization is a fast convective cooling during which the solid and the liquid phases had a very limited time window for crystal-melt segregation, about 1000 years. Chemical differentiation due to crystal-melt segregation is more significant at low pressures corresponding – with large uncertainties – to the upper mantle. It is caused by several factors. When the temperature drops below liquidus everywhere the nucleation–growth–dissolution cycle of crystals changes to continuous crystal growth. This increases the crystal size to ∼1 cm indicating the beginning of crystal-melt segregation. When the crystal fraction increases to about 60% near the surface, the convective heat transport is controlled by solid-state creep which is many orders of magnitude slower. Crystal-melt segregation occurs via melt percolation, which is consistent with the geochemical constraints. Crystallization of the remaining partially molten layers takes about 107–109 years. This stage merges with the subsequent planetary evolution controlled by mantle convection and radiogenic heating. The long lifetime of the shallow magma ocean suggests that this might be the place where liquid iron equilibrates with the mantle before it sinks down to the core." @default.
• W1574094573 created "2016-06-24" @default.
• W1574094573 creator A5052449245 @default.
• W1574094573 date "2007-01-01" @default.
• W1574094573 modified "2023-10-14" @default.
• W1574094573 title "Magma Oceans and Primordial Mantle Differentiation" @default.
• W1574094573 cites W1484857733 @default.
• W1574094573 cites W1490801429 @default.
• W1574094573 cites W1602493110 @default.
• W1574094573 cites W1632807256 @default.
• W1574094573 cites W1671239993 @default.
• W1574094573 cites W1887966961 @default.
• W1574094573 cites W1964409922 @default.
• W1574094573 cites W1964927447 @default.
• W1574094573 cites W1964974132 @default.
• W1574094573 cites W1966016940 @default.
• W1574094573 cites W1966022977 @default.
• W1574094573 cites W1966240652 @default.
• W1574094573 cites W1966525178 @default.
• W1574094573 cites W1966749080 @default.
• W1574094573 cites W1968152463 @default.
• W1574094573 cites W1968473072 @default.
• W1574094573 cites W1968480064 @default.
• W1574094573 cites W1969098672 @default.
• W1574094573 cites W1969279304 @default.
• W1574094573 cites W1970516126 @default.
• W1574094573 cites W1971668954 @default.
• W1574094573 cites W1973257832 @default.
• W1574094573 cites W1973811075 @default.
• W1574094573 cites W1973878148 @default.
• W1574094573 cites W1974590525 @default.
• W1574094573 cites W1974938748 @default.
• W1574094573 cites W1975275067 @default.
• W1574094573 cites W1975465691 @default.
• W1574094573 cites W1975998638 @default.
• W1574094573 cites W1976227464 @default.
• W1574094573 cites W1977026092 @default.
• W1574094573 cites W1978234494 @default.
• W1574094573 cites W1978588989 @default.
• W1574094573 cites W1979719134 @default.
• W1574094573 cites W1980398535 @default.
• W1574094573 cites W1980726283 @default.
• W1574094573 cites W1981376339 @default.
• W1574094573 cites W1981709758 @default.
• W1574094573 cites W1983938209 @default.
• W1574094573 cites W1985451813 @default.
• W1574094573 cites W1986592948 @default.
• W1574094573 cites W1988570873 @default.
• W1574094573 cites W1988708839 @default.
• W1574094573 cites W1988901849 @default.
• W1574094573 cites W1990361243 @default.
• W1574094573 cites W1990740187 @default.
• W1574094573 cites W1990851145 @default.
• W1574094573 cites W1991133794 @default.
• W1574094573 cites W1991650472 @default.
• W1574094573 cites W1992563126 @default.
• W1574094573 cites W1993989995 @default.
• W1574094573 cites W1996645564 @default.
• W1574094573 cites W1998329478 @default.
• W1574094573 cites W1998781690 @default.
• W1574094573 cites W1999902930 @default.
• W1574094573 cites W2001078053 @default.
• W1574094573 cites W2001373058 @default.
• W1574094573 cites W2001851204 @default.
• W1574094573 cites W2002973978 @default.
• W1574094573 cites W2003061026 @default.
• W1574094573 cites W2003088084 @default.
• W1574094573 cites W2007403760 @default.
• W1574094573 cites W2010364254 @default.
• W1574094573 cites W2010684938 @default.
• W1574094573 cites W2012218072 @default.
• W1574094573 cites W2012366370 @default.
• W1574094573 cites W2012473080 @default.
• W1574094573 cites W2012554989 @default.
• W1574094573 cites W2012793117 @default.
• W1574094573 cites W2014133740 @default.
• W1574094573 cites W2014136138 @default.
• W1574094573 cites W2014157843 @default.
• W1574094573 cites W2014211704 @default.
• W1574094573 cites W2015537586 @default.
• W1574094573 cites W2016831994 @default.
• W1574094573 cites W2016922896 @default.
• W1574094573 cites W2019784349 @default.
• W1574094573 cites W2020543333 @default.
• W1574094573 cites W2021165458 @default.
• W1574094573 cites W2021967248 @default.
• W1574094573 cites W2022225147 @default.
• W1574094573 cites W2022308914 @default.
• W1574094573 cites W2023340053 @default.
• W1574094573 cites W2023509892 @default.
• W1574094573 cites W2023830903 @default.
• W1574094573 cites W2024007016 @default.
• W1574094573 cites W2025433765 @default.
• W1574094573 cites W2027609328 @default.
• W1574094573 cites W2029364414 @default.
• W1574094573 cites W2031631915 @default.
• W1574094573 cites W2033223950 @default.
• W1574094573 cites W2035436801 @default.

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