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The redox state of the mantle during and just after core formation

Autor: Yuki Asahara, D. C. Rubie, Daniel J. Frost, Ute Mann

Publikováno v: Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 366:4315-4337

Siderophile elements are depleted in the Earth's mantle, relative to chondritic meteorites, as a result of equilibration with core-forming Fe-rich metal. Measurements of metal–silicate partition coefficients show that mantle depletions of slightly

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2cc8ae7246d8f9af690833df7167dce9
https://doi.org/10.1098/rsta.2008.0147

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Fe-Mg Interdiffusion in (Mg,Fe)SiO 3 Perovskite and Lower Mantle Reequilibration

Autor: D. C. Rubie, Daniel J. Frost, Falko Langenhorst, Christian Holzapfel

Publikováno v: Science. 309:1707-1710

Fe-Mg interdiffusion coefficients for (Mg,Fe)SiO 3 perovskite have been measured at pressures of 22 to 26 gigapascals and temperatures between 1973 and 2273 kelvin. Perovskite Fe-Mg interdiffusion is as slow as Si self-diffusion and is orders of magn

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4cf0657e3c9c0161412461835b6dcc5f
https://doi.org/10.1126/science.1111895

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Density measurements of liquids at high pressure: Modifications to the sink/float method by using composite spheres, and application to Fe-10wt%S

Autor: P. S. Balog, D. C. Rubie, Richard A. Secco

Publikováno v: High Pressure Research. 21:237-261

We describe a new modification of the sink/float method of determining the density of molten materials under high pressure, and apply it to liquid Fe-10wt%hS. The modification is based on the use of composite spheres made of a dense, metallic core an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3f2ac314ad23ac511c929988018bc2ba
https://doi.org/10.1080/08957950108201026

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Characterising the sample environment in multianvil high-pressure experiments

Autor: D. C. Rubie

Publikováno v: Phase Transitions. 68:431-451

The multianvil apparatus is used to generate conditions up to about 3100K and 26GPa with sample volumes of 1-12 mm3. Because high pressures and temperatures are stable over long experimental run durations, this apparatus can be used to investigate ph

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::302c3c7b711b0b00bb5a48097245ed8e
https://doi.org/10.1080/01411599908224526

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High-resolution synchrotron X-ray powder diffraction and Rietveld structure refinement of two (Mg (sub 0.95) , Fe (sub 0.05) )SiO3perovskite samples synthesized under different oxygen fugacity conditions

Autor: C. A. McCammon, H. St. C. O'Neill, L. W. Finger, Joseph A. Hriljac, D. C. Rubie, Andrew P. Jephcoat

Publikováno v: American Mineralogist. 84:214-220

This paper presents high-resolution synchrotron X-ray powder diffraction data at 290 K on two Fe-bearing, polycrystalline silicate perovskite samples with approximate compo- sitions (Mg0.95Fe0.05)SiO3 synthesized at 25 GPa and 1920 K in a multi-anvil

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dfe0ad2a6d8451c15c737b064df16ecf
https://doi.org/10.2138/am-1999-0301

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Electronic structure of titanium monoxide

Autor: V. M. Cherkashenko, S. N. Nemnonov, Antoni Winiarski, V. V. Fedorenko, Martin Neumann, Ernst Z. Kurmaev, S. N. Shamin, S. Bartkowski, D. C. Rubie

Publikováno v: Physical Review B. 56:10656-10667

The electronic structure of the monoclinic phase of titanium monoxide and a vacancy-free rock-salt phase have been investigated using x-ray photoelectron spectroscopy and x-ray emission spectroscopy techniques. For the investigation of the monoclinic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d632288c8d78058937978887c2ccaa15
https://doi.org/10.1103/physrevb.56.10656

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The self-diffusion of silicon and oxygen in diopside (CaMgSi206) liquid up to 15 GPa

Autor: J. E. Reid, B. T. Poe, D. C. Rubie, N. Zotov, Michael Wiedenbeck

Publikováno v: Chemical Geology

The self-diffusivities of silicon and oxygen in diopside (CaMgSi2O6) liquid have been measured at pressures and temperatures up to 15 GPa and 2300°C, using a 1200-tonne multianvil apparatus. Diffusion couples were prepared using finely ground, diops

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::1d8a75f5aa6decc7cdc47ff6112b6064
https://gfzpublic.gfz-potsdam.de/pubman/item/item_228804

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Enhancement of cation diffusion rates across the 410-kilometer discontinuity in Earth's mantle

Autor: R. Knoche, David P. Dobson, Sumit Chakraborty, H. Schulze, D. C. Rubie, Ross J. Angel, N. L. Ross

Publikováno v: Science (New York, N.Y.). 283(5400)

Rates of cation diffusion (magnesium, iron, and nickel) have been determined in olivine and its high-pressure polymorph, wadsleyite, at 9 to 15 gigapascals and 1100° to 1400°C for compositions that are relevant to Earth's mantle. Diffusion in olivi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df895dcb1049ea1d9773031c54b04e23
https://pubmed.ncbi.nlm.nih.gov/9888846

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