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Showing 1 to 13 of 13 for “"Lunar mantle"”.
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Experimental studies of melting and crystallization processes in planetary interiors
… three distinct geologic environments: the Moon's mantle, the Greenland ice sheet, and the Earth's crust. Experiments have been conducted to determine the conditions of origin for two high-titanium magmas from the Moon. The lunar experiments (Chapter 2) were designed to explore the e ects of …
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Experimental studies of melting and crystallization processes in planetary interiors
… three distinct geologic environments: the Moon's mantle, the Greenland ice sheet, and the Earth's crust. Experiments have been conducted to determine the conditions of origin for two high-titanium magmas from the Moon. The lunar experiments (Chapter 2) were designed to explore the effects of …
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The Influence of Variable Oxygen Fugacity on the Source Depths for Lunar High-Titanium Ultramafic Glasses
… out under variable oxygen fugacity conditions on lunar high titanium ultramafic glasses to determine the conditions of multiple saturation where both olivine and orthopyroxene are stable on the liquidus. The investigated compositions are the Apollo 17 Orange glass (A17O, 9.1 wt.% TiO₂), Apollo 15 …
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The geophysical evolution of impact basins and volcanic structures on Mercury and the Moon
… parameters of the impact and the rheology of the lunar mantle; and that the tremendous sizes at which lunar lava tubes can be stable open up both new ways of interpreting GRAIL observations of the lunar gravity field and new possibilities for human exploration of the Moon.</p>
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Experimental investigation into lunar melt density and compressibility : the role of titanium
… the density and compressibility of four lunar picritic glasses as a function of TiO2 content from 0-11 GPa and 1748-2473 K (1475-2200°C). These glasses are hypothesized to have quenched rapidly as glass beads during lunar fire fountain eruptions. The lunar glass beads have distinctive …
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Investigating the Distribution and Source(s) of Lunar Volatiles
… (C, N, He, Ne, and Ar) in a diverse suite of lunar mare basalts and soils, providing new insights about volatiles indigenous to the lunar interior, volatiles produced <i>in situ</i> at the lunar surface, and volatiles delivered to and implanted into the lunar surface. Simultaneous static-mode …
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Origin of the Lunar Ultramafic Glasses Constrained by Experiments and Models
To place further constraints on the origin of the lunar ultramafic glasses and the evolution of the lunar interior, phase equilibrium experiments are carried out on two synthetic compositions which represent hybridized, bulk source compositions of (1) high-titanium and (2) very …
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Using Lunar Apatite to Assess the Volatile Inventory of the Lunar Interior
… of volatiles (H<sub>2</sub>O, Cl, F) within lunar melt inclusions, glass beads, and the mineral apatite have challenged the previously held notion that the Moon is depleted in volatiles. As the most widespread volatile-bearing phase, apatite has been the focus of many studies aiming to …
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Primitive magmas of the Earth and Moon : a petrologic investigation of magma genesis and evolution
… major physical evidence used to determine the mantle potential temperature of the Archean. Chapter 2 uses phase equilibrium experiments investigate the origin of the Apollo 15 green glasses from the Moon. Garnet-lherzolite saturated experiments are used to calibrate a melting algorithm used to …
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A dynamo case study of Mercury, and the early orbital and thermal evolution of the Moon
… asymmetric heat flux pattern at the core-mantle boundary, and find multiple cases in which the surface magnetic field exhibits all the observed characteristics. This result supports either thermal or chemical stratification at the top of Mercury's core, and suggests that the northern …
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Kinetics of chemical exchange during melting of planetary interiors
… exchange during partial melting within the mantles of the terrestrial planets. Chapter 1 presents experiments on the diffusion rates of La, Ce, Nd, Dy and Yb in diopside at pressures of 0 to 2.5 GPa and temperatures of 1050 to 1450 'C. The results demonstrate a large variation in diffusivity …
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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
… 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 for the differentiation of Earth, Mars, Mercury, …
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Experimental simulation of Lunar Magma Ocean crystallization : insights into mantle composition and the source regions of lunar basaltic magmatism
Crystallization of the Lunar Magma Ocean has been empirically modeled and its products inferred from sample observations, but it has never been fully tested experimentally. Presented in this study is the first experimental simulation of lunar differentiation. Two end-member bulk Moon compositions …