Search Results - "Katz, Richard F."
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Melting above the anhydrous solidus controls the location of volcanic arcs
Published in Nature (London) (07-10-2010)“…Segregation of magma from the mantle in subduction zones is one of the principal mechanisms for chemical differentiation of the Earth. Fundamental aspects of…”
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Glacial cycles drive variations in the production of oceanic crust
Published in Science (American Association for the Advancement of Science) (13-03-2015)“…Glacial cycles redistribute water between oceans and continents, causing pressure changes in the upper mantle, with consequences for the melting of Earth's…”
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3
The dynamics of melt and shear localization in partially molten aggregates
Published in Nature (London) (10-08-2006)“…The volcanoes that lie along the Earth's tectonic boundaries are fed by melt generated in the mantle. How this melt is extracted and focused to the volcanoes,…”
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Parental arc magma compositions dominantly controlled by mantle-wedge thermal structure
Published in Nature geoscience (01-10-2016)“…The composition of subduction zone lavas varies systematically. Numerical simulations and geochemical analysis of lavas from the Chilean Southern Volcanic Zone…”
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5
Basal hydrofractures near sticky patches
Published in Journal of glaciology (01-06-2023)“…Basal crevasses are macroscopic structural discontinuities at the base of ice sheets and glaciers that arise by fracture. Motivated by observations and by the…”
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Variations in mid-ocean ridge CO2 emissions driven by glacial cycles
Published in Earth and planetary science letters (01-09-2015)“…The geological record documents links between glacial cycles and volcanic productivity, both subaerially and, tentatively, at mid-ocean ridges…”
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7
Stability of ice-sheet grounding lines
Published in Proceedings of the Royal Society. A, Mathematical, physical, and engineering sciences (08-06-2010)“…Recent observations of the West Antarctic Ice Sheet document rapid changes in the mass balance of its component glaciers. These observations raise the question…”
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Experimental test of the viscous anisotropy hypothesis for partially molten rocks
Published in Proceedings of the National Academy of Sciences - PNAS (13-10-2015)“…Chemical differentiation of rocky planets occurs by melt segregation away from the region of melting. The mechanics of this process, however, are complex and…”
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Comment on "Sensitivity of seafloor bathymetry to climate-driven fluctuations in mid-ocean ridge magma supply"
Published in Science (American Association for the Advancement of Science) (17-06-2016)“…Olive et al (Reports, 16 October 2015, p. 310) argue that ~10% fluctuations in melt supply do not produce appreciable changes in ocean ridge bathymetry on time…”
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10
The Role of Volatiles in Reactive Melt Transport in the Asthenosphere
Published in Journal of petrology (01-06-2016)Get full text
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Response to Comment on "Glacial cycles drive variations in the production of oceanic crust"
Published in Science (American Association for the Advancement of Science) (04-09-2015)“…Goff comments that faulting is important for creation of abyssal hills and is the dominant process at slow-spreading ridges. We respond that faulting is indeed…”
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Dislocation theory of steady and transient creep of crystalline solids: Predictions for olivine
Published in Proceedings of the National Academy of Sciences - PNAS (21-02-2023)“…In applications critical to the geological, materials, and engineering sciences, deformation occurs at strain rates too small to be accessible experimentally…”
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13
Physics of Melt Extraction from the Mantle: Speed and Style
Published in Annual review of earth and planetary sciences (31-05-2022)“…Melt extraction from the partially molten mantle is among the fundamental processes shaping the solid Earth today and over geological time. A diversity of…”
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Magma Dynamics with the Enthalpy Method: Benchmark Solutions and Magmatic Focusing at Mid-ocean Ridges
Published in Journal of petrology (01-12-2008)“…Magma genesis and transport link mantle convection with surface volcanism and hence with the long-term chemical and morphological evolution of the Earth's;…”
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The role of grain-environment heterogeneity in normal grain growth: A stochastic approach
Published in Acta materialia (01-05-2021)“…[Display omitted] The size distribution of grains is a fundamental characteristic of polycrystalline solids. In the absence of deformation, the grain-size…”
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Consequences of mantle heterogeneity for melt extraction at mid-ocean ridges
Published in Earth and planetary science letters (15-06-2012)“…Evidence for chemical heterogeneity of the mantle is found at most mid-ocean ridges, yet we are only beginning to develop a theoretical understanding of how…”
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17
Chemical heterogeneity, convection and asymmetry beneath mid-ocean ridges
Published in Geophysical journal international (12-09-2022)“…SUMMARY Geophysical observations at some mid-ocean ridges document an across-axis asymmetry in indicators of magma production. Other observations are…”
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18
Episodic fluid venting from sedimentary basins fueled by pressurized mudstones
Published in Proceedings of the National Academy of Sciences - PNAS (20-02-2024)“…Subsurface sandstone reservoirs sealed by overlying, low-permeability layers provide capacity for long-term sequestration of anthropogenic waste. Leakage can…”
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Influence of late Pleistocene sea-level variations on midocean ridge spacing in faulting simulations and a global analysis of bathymetry
Published in Proceedings of the National Academy of Sciences - PNAS (12-07-2022)“…It is established that changes in sea level influence melt production at midocean ridges, but whether changes in melt production influence the pattern of…”
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20
Continuum approximation of dyking with a theory for poro-viscoelastic–viscoplastic deformation
Published in Geophysical journal international (27-04-2023)“…SUMMARY To reach Earth’s surface, magma must ascend from the hot, ductile asthenosphere through cold and brittle rock in the lithosphere. It does so via…”
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