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Showing 1 to 8 of 8 for “"magma oceans"”.
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Terrestrial magma ocean solidification and formation of a candidate D" layer
… we investigate the solidification of early magma oceans on the Earth and the formation of a deep dense layer at the core-mantle boundary. We also study the concentrations and densities of the last layers of the solidified magma ocean and how they create a deep dense layer after solid-state …
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Direct numerical simulations of multiphase flow with applications to basaltic volcanism and planetary evolution
… understanding of the multiphase flow dynamics in magmatic flow. It is divided into two parts. The first part investigates gas-fluid coupling during the buoyant ascent of an exsolved gas phase in the conduit of basaltic volcanoes. The second part examines the solidification processes in magma …
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Mantle thermal evolution of tidally-locked super-earths
… discuss the possibility of steady-state partial magma oceans in the substellar region induced by higher stellar fluxes. We propose that, though these tidally-locked planets may not be considered habitable in general, they may contain locally habitable regions due to their variety of long-lived …
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Carbon in Silicate Melt - Experimental Constraints and Applications for the Subduction Zone and Magma Ocean Carbon Cycles
… to constrain the carbon content of early Earth’s magma ocean. Combining our experiments with previous work, we developed an empirical model that describes the dissolved CO2 content as a function of pressure, temperature, H2O content, oxygen fugacity, and silicate composition. This model was …
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Pressure-driven instability in planetary stagnant lids
… results in a partially molten mantle, known as a magma ocean. Both fully solid mantles and magma oceans are noted for their complex fluid dynamics, in particular involving the convection of fluids with strongly temperature-dependent viscosities. Because of the dominant surface cooling of planets, …
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Metal-silicate Partitioning Behavior of Molybdenum, Tungsten, and Nickel: Implications for Core Formation
… of these elements were set by a global magma ocean near the end of accretion with conditions of 35-37 GPa (~1100 km depth) and 2950-3000 K with XC = 0.07, XS = 0.05, and XSi = 0.06. Thus implying that large impacts in the late stages of Earth's accretion were energetic enough to …
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An experimental and petrologic investigation of the source regions of lunar magmatism in the context of the primordial differentiation of the Moon
… differentiation of the Moon via a global magma ocean has become the paradigm under which all lunar data are interpreted. The success of this model in explaining multiple geochemical, petrologic, and isotopic characteristics lunar geology has led to magma oceans becoming the preferred model …
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Hydrocode modeling of oblique impacts into terrestrial planets
… and undergo turbulent entrainment in a global magma ocean; under these conditions, cores greater than 10 km in diameter do not fully mix without a sufficiently deep magma ocean. I have performed hydrocode simulations that revise this assumption and yield a clearer picture of the impact process …