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Showing 1 to 8 of 8 for “"trace element partitioning"”.
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An ion microprobe study of trace element partitioning between clinopyroxene and liquid in the diopside (CaMgSi2O6) - albite (NaAlSi3O8) - anorthite (CaAl2Si2O8) system
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1981.
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Studies of Magmatism by Trace Element Partitioning Between Clinopyroxene and Silicate Melt, Uranium-Series Disequilibria in Lavas From Subduction Zones, and Non-Traditional Stable Isotopes
Finally, in chapter 5, I report results of Fe-Mg isotopic analyses of a thermal migration experiment. Significant mass-dependent Fe-Mg isotopic fractionations occur in the melt-present portion of the experiment. I conclude that the positive co-variation of Fe-Mg isotopes could be an important …
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Trace element distributions and partitioning trends in hydrothermal base metal sulphide ores comprising sphalerite, galena, chalcopyrite and tetrahedrite-tennantite
This study addresses trace element concentrations and distributions in hydrothermal base metal sulphide (BMS) ores using samples from a wide variety of ore deposits and conditions of ore formation. The ranges of trace elements that can be incorporated into natural sphalerite, galena, chalcopyrite …
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Magmatic and volcanic processing of volatile and chalcophile elements
Chalcophile elements possess significant economic and environmental value. The transition to an electric economy has led to an unprecedented rise in the demand for critical metals, including several chalcophile elements such as copper, selenium, and silver. Copper in particular is essential – it is …
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Trace element geochemistry of oceanic peridotites and silicate melt inclusions : implications for mantle melting and ocean ridge magmagenesis
… nonexistent. This dissertation examines the trace element compositions of abyssal peridotites and discusses how they preserve details of the melting process that are not recognizable in mid-ocean ridge basalts. The results support fractional melting as the dominant melting process in the …
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Interactions between aqueous fluids and silicate melts : equilibration, partitioning and complexation of trace elements
… melts is closely linked to a fractionation of elements between the two phases. Then, aqueous fluids migrate to shallower parts of the Earth ́s crust because of it ́s lower density compared to that of melts and adjacent rocks. This process separates fluids and melts, and furthermore, during the …
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Experimental investigation of the fluid driven carbonation of serpentinites and spinel-peridotites: implications for the carbon and trace element cycle in the forearc region of the mantle wedge
… grain sizes, natural porosity and given texture. Partitioning coefficients for fluid mobile elements between carbonates and COH-fluids are established experimentally. The results are applied to carbonated high pressure rocks from the Western European Alps. The volatile composition of …
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Experimental investigation of the fluid driven carbonation of serpentinites and spinel-peridotites: implications for the carbon and trace element cycle in the forearc region of the mantle wedge
… grain sizes, natural porosity and given texture. Partitioning coefficients for fluid mobile elements between carbonates and COH-fluids are established experimentally. The results are applied to carbonated high pressure rocks from the Western European Alps. The volatile composition of …