Results 321 to 330 of about 2,429,367 (395)
Some of the next articles are maybe not open access.
Partial melting of subduction zones
Acta Petrologica Sinica, 2020ZHANG ZeMing +3 more
openaire +2 more sources
Does partial melting explain geophysical anomalies?
Physics of the Earth and Planetary Interiors, 2014Abstract The existence of partial melt is frequently invoked to explain geophysical anomalies such as low seismic wave velocity and high electrical conductivity. I review various experimental and theoretical studies to evaluate the plausibility of this explanation. In order for a partial melt model to work, not only the presence of melt, but also the
S. Karato
openaire +2 more sources
Partial‐melt electrical conductivity: Influence of melt composition
Journal of Geophysical Research: Solid Earth, 1999The electrical conductivity of a partial melt is influenced by many factors, including melt conductivity, crystalline conductivity, and melt fraction, each of which is influenced by temperature. We have performed measurements of bulk conductivity as a function of temperature of an Fo80‐basalt partial melt between 684° and 1244°C at controlled oxygen ...
Jeffery J. Roberts, James A. Tyburczy
openaire +1 more source
Sulfide partial melting and chalcopyrite disease: An experimental study
American Mineralogist, 2018Speckling of sphalerite with micrometer-sized blebs of chalcopyrite is usually referred to as “chalcopyrite disease.” Fe-rich sphalerites are particularly prone to chalcopyrite disease.
Boddepalli Govindarao +2 more
semanticscholar +1 more source
Partial melting, partial melt extraction and partial back reaction in anatectic migmatites
Lithos, 2001Abstract Anatectic migmatites commonly show both prograde (entropy producing) and retrograde reactions between minerals and melt. The final textures, mineral modes and mineral chemistries are affected by four successive processes: (i) prograde partial melting and small-scale segregation into melt-rich domains and restitic domains; (ii) partial melt ...
openaire +1 more source
Partial Melting and Deformation
Reviews in Mineralogy and Geochemistry, 2002The physical properties of partially molten rocks are directly coupled to the grain-scale as well as the broader scale distribution of the melt phase. At the grain scale, if melt forms isolated pockets in a silicate matrix, its influence on plastic flow is generally relatively minor.
openaire +1 more source
Underplating and Partial Melting: Implications for Melt Generation and Extraction
Science, 1989The quantitative assessment of underplating and concomitant partial melting of continental crust requires the use of geologically reasonable melt fraction distributions as a function of temperature. Conductive modeling indicates that simple underplating of metapelite by basalt can yield magma bodies with melt fractions above the rheological limit of ...
openaire +2 more sources
Partial melting of crustal rocks
Engineering Geology, 1989Abstract Shales and graywackes were first metamorphosed at 650°C and then partially melted at 700 and 750°C at 2, 4, 6, and 8 kilobars in the presence of 0.75m NaCl−0.45m KCl and 0.225m CaCl2−0.750m NaCl solutions. In experiments with shales,KK+Na ratio in the decreases with increasing pressure at 650 and 700°C; however, at 750°C this ratio is equal ...
openaire +1 more source
2016
Partial melting is the transformation of some fraction of the mass of a solid rock into a liquid as a result of decompression, heat input, or addition of a flux. The resulting liquid is called magma and becomes lava if it erupts from a volcano. The understanding that partial, rather than complete, melting is the norm in natural systems is essential to ...
openaire +2 more sources
Partial melting is the transformation of some fraction of the mass of a solid rock into a liquid as a result of decompression, heat input, or addition of a flux. The resulting liquid is called magma and becomes lava if it erupts from a volcano. The understanding that partial, rather than complete, melting is the norm in natural systems is essential to ...
openaire +2 more sources
Partial melting of filamentary Ho1Ba2Cu3Ox superconductors
Physica C: Superconductivity, 2004Abstract We prepared precursor filamentary Ho 1 Ba 2 Cu 3 O x superconductors by a solution spinning. The filamentary precursor was partially melted in flowing O 2 under various heating conditions. The J c value of the sample was strongly dependent on the flowing O 2 rate.
E. Sato, T. Goto, K. Watanabe
openaire +1 more source