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With a background in condensed-matter physics and interests in earth and planetary sciences, my research focuses on physical and chemical properties of minerals and rocks at high pressures and temperatures, with particular emphasis on strength. Motivation for our experiments derives from the importance of quantifying the behavior of geological materials under extreme conditions as the basis for understanding and modeling the dynamical behavior and chemical evolution of deep interiors of terrestrial planets. Two central themes in my research involve fluids. First, we study physical mechanisms by which a small amount of water in the form of hydrogen dissolved in nominally anhydrous silicate minerals produces a dramatic reduction in strength. Water weakening has important consequences for convection in Earth's mantle by enabling plate tectonics, a phenomenon that is absent on Venus, a relatively dry planet often considered Earth's twin. A small amount of melt also profoundly affects the strength of otherwise crystalline rocks. Not only is the strength of a partially molten rock sensitive to melt distribution, but also melt distribution is profoundly influenced by deformation. This coupling between deformation and melt distribution results in self-organization of melt into melt-enriched shear zones that not only localize deformation but also provide high permeability paths for rapid transport of melt from depth to Earth's surface.
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论文共 395 篇作者统计合作学者相似作者
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JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTHno. 3 (2024)
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTHno. 3 (2024)
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTHno. 4 (2023)
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Contributions to Mineralogy and Petrologyno. 12 (2023): 1-11
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTHno. 4 (2023)
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Journal of Geophysical Research: Solid Earthno. 4 (2023)
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Authorea (Authorea) (2023)
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Geochemistry, Geophysics, Geosystemsno. 9 (2023): n/a-n/a
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