Browsing by Author "Van Orman J.A."
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Browsing by Author "Van Orman J.A."
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Van Orman J.A.; Grove T.L.; Shimizu N. (2002)We have developed a numerical model to investigate the importance of diffusive chemical fractionation during production and transport of melt in Earth’s upper mantle. The model incorporates new experimental data on the ...
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Van Orman J.A.; Saal A.E.; Bourdon B.; Hauri E.H. (2006)U-series radioactive disequilibria in basaltic lavas have been used to infer many important aspects of melt generation and extraction processes in Earth’s mantle and crust, including the porosity of the melting zone, the ...
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Watson E.B.; Wark D.A.; Price J.D.; Van Orman J.A. (2002)The refractory oxides MgO and Al2O3 are the most commonly used insulator/filler materials in solid-media pressure assemblies. These oxides react with one another at high temperatures and pressures, forming a well-defined ...
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RE-EXAMINATION OF THE LUNAR MAGMA OCEAN CUMULATE OVERTURN HYPOTHESIS: MELTING OR MIXING IS REQUIRED Elkins Tanton L.T.; Van Orman J.A.; Hager B.H.; Grove T.L. (2002)There is a long-standing hypothesis that the last fraction of the lunar magma ocean crystallized into a layer of dense, Ti-rich cumulate minerals at shallow depths (~100 km) early in the moon's history. Many questions ...
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Van Orman J.A.; Grove T.L.; Shimizu N. (1998)This paper presents new experimental data on the tracer diffusion rates of U and Th in diopside at 1 atm and 1150-1300°C. Diffusion couples were prepared by depositing a thin layer of U-Th oxide onto the polished surface ...
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