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Melt Segregation and Strain Partitioning: Implications for Seismic Anisotropy and Mantle Flow
One of the principal means of understanding upper mantle dynamics involves inferring mantle flow directions from seismic anisotropy under the assumption that the seismic fast direction (olivine aExpand
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Shear deformation experiments of forsterite at 11 Gpa - 1400°C in the multianvil apparatus
Synthetic forsterite samples were shear-deformed at 11 GPa, 1400°C in the multianvil apparatus. The deformation microstructures have been characterised by SEM, EBSD, X-ray diffraction peak broadeningExpand
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The origin of reaction textures in mantle peridotite xenoliths from Sal Island, Cape Verde: the case for “metasomatism” by the host lava
Reaction zones around minerals in mantle xenoliths have been reported from many localities worldwide. Interpretations of the origins of these textures fall into two groups: mantle metasomaticExpand
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Transformation textures in post-perovskite: Understanding mantle flow in the D '' layer of the Earth
[1] Deformation and texture formation in (Mg, Fe)SiO3 post perovskite (ppv) is a potential explanation for the strong seismic anisotropy that is found in the D″ layer of the Earth. However, differentExpand
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Crystal alignment of carbonated apatite in bone and calcified tendon: results from quantitative texture analysis.
Calcified tissue contains collagen associated with minute crystallites of carbonated apatite. In this study, methods of quantitative X-ray texture analysis were used to determine the orientationExpand
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Lower-mantle water reservoir implied by the extreme stability of a hydrous aluminosilicate
Plumes are thought to transport water-rich material from the deep mantle to Earth’s surface. High-pressure experiments identify a hydrous mineral phase that is stable under lower-mantle conditionsExpand
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Analysis of the Native Structure of Starch Granules with X-ray Microfocus Diffraction
Results of microfocus X-ray diffraction at the ESRF are presented which provide unique evidence supporting a model for the structure of starch, much of this model having been previously derived onlyExpand
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Texture development and TEM analysis of deformed CaIrO3: Implications for the D″ layer at the core-mantle boundary
[1] CaIrO3 is an isostructural analog for MgSiO3 post-perovskite (ppv), likely the dominant mineral phase in the D″ layer. At high temperature CaIrO3 undergoes a phase transition to a perovskite (pv)Expand
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Dependence of dislocation creep of dunite on oxygen fugacity: Implications for viscosity variations in Earth's mantle
[1] Significant variations in flow behavior are known to exist both vertically and laterally in Earth's upper mantle. The sources of such variation may be thermal, compositional, or reflectExpand
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The effect of aluminum and water on the development of deformation fabrics of orthopyroxene
The effect of alumina and water solubility on the development of fabric in orthopyroxene in response to simple shear deformation has been investigated at a pressure of 1.5 GPa and a temperature ofExpand
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