Browsing ELibrary by Subject "ACCRETION"
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Browsing ELibrary by Subject "ACCRETION"
Now showing items 1-10 of 10
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(1999)Recent proposals of metal-silicate equilibrium at the base of a deep hydrous magma ocean are based on experimental data obtained under anhydrous conditions. We have undertaken a series of experiments at 10 kbar and 1300°C, ...
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(2002)Agreement about planetary formation processes deteriorates sharply with distance from the Sun. While the terrestrial planets are widely believed to have formed from the collisional accumulation of solid bodies, there are ...
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(2003)Discussed are two probable models for lateral growth of continental crust in the Early Precambrian: accretion of island arcs and accretion of oceanic plateaus. Important constraints on geodynamic settings in which Archean ...
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(2006)This paper presents new data for the structure and age of the Paleozoic rocks in the Ikat-Bagdarin zone of the West Transbaikalia region. Reported for the first time is the wide development of various Devonian and Carboniferous ...
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(2001)The depletion of moderately volatile elements in planetesimals and planets is generally considered to be a result of removal of hot nebula gases. This theory can be tested with Sr isotopes. The calculated initial 87Sr/86Sr ...
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(2003)It has been proposed that the high concentrations of moderately siderophile elements (e.g. Ni and Co) in the Earth's mantle are the result of metal-silicate equilibration at the base of a deep magma ocean that formed during ...
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(1997)The accretion and early differentiation of the Earth is the starting point of earth history. The abundances of metal-seeking (siderophile) elements in the mantle are a powerful probe of those events. It has long been known ...
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(2001)Incipient shock-induced devolatilization of Murchison meteorite occurs upon subjecting samples to a minimum shock stress, or pressure, of about 5 GPa. This pressure is similar to that required to initiate devolatilization ...
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(2000)The former decay of 182Hf to 182W (T1/2=9 Myr) has resulted in variations in W isotope composition that reflect early solar system time-integrated Hf/W ratios. The bulk silicate Earth (BSE) has non-chondritic Hf/W because ...
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(2005)Петрохимические исследования метабазитов Уймонской зоны Горного Алтая показали существенные различия по содержанию TiO2, MgO, Na2O, К2О и Р2O5 между глаукофановыми, винчит-актинолитовыми и актинолитовыми сланцами. Геохимическая ...
Now showing items 1-10 of 10