Search Results - "Beckett, J.R"

Solubility of water in lunar basalt at low pH2O by Newcombe, M.E., Brett, A., Beckett, J.R., Baker, M.B., Newman, S., Guan, Y., Eiler, J.M., Stolper, E.M.

“…We report the solubility of water in Apollo 15 basaltic “Yellow Glass” and an iron-free basaltic analog composition at 1atm and 1350°C. We equilibrated melts…”
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Mineralogy, petrography, and oxygen isotopic compositions of ultrarefractory inclusions from carbonaceous chondrites by Krot, A.N., Ma, C., Nagashima, K., Davis, A.M., Beckett, J.R., Simon, S.B., Komatsu, M., Fagan, T.J., Brenker, F., Ivanova, M.A., Bischoff, A.

“…We report on the mineralogy, petrography, and in situ oxygen isotopic composition of twenty-five ultrarefractory calcium-aluminum-rich inclusions (UR CAIs) in…”
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The partitioning of Na between melilite and liquid: part II. applications to Type B inclusions from carbonaceous chondrites by Beckett, J.R., Simon, S.B., Stolper, E.

“…The zoning of Na in the melilite of Type B1 Ca-, Al-rich inclusions from carbonaceous chondrites reflects a combination of factors including the maximum…”
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Effects of pH2O, pH2 and fO2 on the diffusion of H-bearing species in lunar basaltic liquid and an iron-free basaltic analog at 1 atm by Newcombe, M.E., Beckett, J.R., Baker, M.B., Newman, S., Guan, Y., Eiler, J.M., Stolper, E.M.

“…We have experimentally determined the diffusivity of water in a representative lunar basaltic liquid composition (LG) and in an iron-free analog of a basaltic…”
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Zoning of phosphorus in igneous olivine by Milman-Barris, Margaret S., Beckett, John R., Baker, Michael B., Hofmann, Amy E., Morgan, Zachary, Crowley, Meghan R., Vielzeuf, Daniel, Stolper, Edward

“…We describe P zoning in olivines from terrestrial basalts, andesites, dacites, and komatiites and from a martian meteorite. P 2 O 5 contents of olivines vary…”
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Volatilization kinetics of silicon carbide in reducing gases: an experimental study with applications to the survival of presolar grains in the solar nebula by Mendybaev, R A, Beckett, J R, Grossman, L, Stolper, E, Cooper, R F, Bradley, J P

“…The volatilization kinetics of single crystal alpha -SiC, polycrystalline beta -SiC, and SiO sub(2) (cristobalite or glass) were determined in H sub(2)-CO…”
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The partitioning of Na between melilite and liquid: part I. the role of crystal chemistry and liquid composition by Beckett, J.R., Stolper, E.

“…The partitioning behavior of Na between melilite and liquid has been determined from the compositions of coexisting phases produced in slowly cooled (1°C/h)…”
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Measurement of oxygen fugacities under reducing conditions: non-Nernstian behavior of Y2O3-doped zirconia oxygen sensors by Mendybaev, R.A, Beckett, J.R, Stolper, E, Grossman, L

“…This study presents a simple procedure for correcting measurements using Y2O3-stabilized oxygen sensors so that oxygen fugacities can be determined accurately…”
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The measurement of oxygen fugacities in flowing gas mixtures at temperatures below 1200°C by Beckett, J.R., Mendybaev, R.A.

“…We measured oxygen fugacities in H2-CO2 and CO-CO2 gas mixtures in the temperature interval 700–1350°C using an yttria-stabilized zirconia (YSZ) oxygen sensor…”
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Measurement of oxygen fugacities under reducing conditions: non-Nernstian behavior of Y 2O 3-doped zirconia oxygen sensors by Mendybaev, R.A, Beckett, J.R, Stolper, E, Grossman, L

“…A calibration procedure is presented for the use of a Y 2O 3-stabilized zirconia (YSZ) oxygen sensor in 1 atm gas-mixing furnaces in the temperature range…”
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Trace element disequilibria and magnesium isotope heterogeneity in 3655A: Evidence for a complex multi-stage evolution of a typical Allende Type B1 CAI by Kennedy, Allen K., Beckett, John R., Edwards, David A., Hutcheon, Ian D.

“…We used the Panurge ion microprobe to measure concentrations of the rare earth elements (REEs), Ba, Hf, and Sr in melilite, clinopyroxene, plagioclase, and…”
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Trace metal determinations by liquid chromatography and fluorescence detection by Beckett, James R., Nelson, David A.

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NMR measurement of the nuclear shielding isotope shift in molecular hydrogen by Beckett, James R., Carr, H. Y.

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