Results 11 to 20 of about 27,193 (265)
Partial melting in the deepest mantle [PDF]
Geophysical Research Letters, 2002 We have compared the travel times of direct (P, S) and core‐reflected (PcP, ScS) phases recorded in southern Africa from earthquakes occurring in the Scotia Arc region. The low‐velocity region beneath the south Atlantic is explored by calculating ScS‐S and PcP‐P travel‐time residuals to determine the correlation and magnitude of Vs and Vp reductions in
N. A. Simmons, S. P. Grand
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Acoustic and Microstructural Properties of Partially Molten Samples in the Ice–Ammonia System
Geosciences, 2019 We measured the ultrasonic properties and microstructure of two-phase binary mixtures of the ice−ammonia partial melt system, which was selected based on its importance for numerous planetary bodies.
Christine McCarthy +4 more
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Compositional Data Analysis (CoDA) of Clinopyroxene From Abyssal Peridotites
Geochemistry, Geophysics, Geosystems, 2022 We analyze a large database of abyssal peridotite clinopyroxene compositions using log‐ratio transformation, principal component analysis (PCA) and k‐means clustering, to better understand clinopyroxene compositional systematics in abyssal peridotites ...
I. Nishio +5 more
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Geophysical and Geochemical Constraints on Neogene‐Recent Volcanism in the North American Cordillera
Geochemistry, Geophysics, Geosystems, 2021 Widespread recent volcanic rocks occur across the Cordillera landward of the current/recent volcanic arc Mexico to Alaska and most other subduction backarcs.
Roy D. Hyndman, Dante Canil
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Geochemistry, Geophysics, Geosystems, 2020 Changbaishan/Paektu volcano straddles the border between the Democratic People's Republic of Korea and China. It was responsible for one of the largest eruptions in history, the “Millennium Eruption' of 946 CE. An episode of unrest between 2002 and 2005,
James O. S. Hammond +5 more
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Geochemistry, Geophysics, Geosystems, 2022 Along ultraslow spreading ridges melt is distributed unequally, but melt focusing guides melt away from amagmatic segments toward volcanic centers. An interplay of tectonism and magmatism is thought to control melt ascent, but the detailed process of ...
M. Meier, V. Schlindwein, F. Schmid
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Frontiers in Earth Science, 2022 To assess the effects of sediment addition on the partial melting of subducted oceanic crust and generation of arc silicic magma, a series of comparative partial melting experiments on a garnet plagioamphibolite and a 90 wt% garnet plagioamphibolite + 10
Chunjuan Zang +5 more
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Geochemistry, Geophysics, Geosystems, 2018 Imaging the lithosphere is key to understand mechanisms of extension as rifting progresses. Continental rifting results in a combination of mechanical stretching and thinning of the lithosphere, decompression upwelling, heating, sometimes partial melting
Aude Lavayssière +7 more
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Geochemistry, Geophysics, Geosystems, 2020 Long‐period magnetotelluric (MT) data can be used to interpret upper mantle temperature, hydrogen content, and the presence of partial melt, all of which strongly influence mantle viscosity. We have collected the first long‐period MT data in Svalbard and
Kate Selway +7 more
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Ethylene Homopolymerization by Ziegler-Natta (TiCl4/MgCl2) Catalyst through Full Factorial Experimental Design [PDF]
علوم و تکنولوژی پلیمر, 2009 Full factorial experimental design (23) for the evaluation of slurry ethylene polymerization in the presence of an industrial TiCl4/MgCl2 Ziegler-Natta catalyst was employed.
S. Hakim +3 more
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