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The effect of silica activity on the incorporation mechanisms of water in synthetic forsterite: a polarised infrared spectroscopic study
Pure forsterite crystals were grown from hydrous melts using controlled cooling experiments at 2.0 GPa and varying the bulk Mg/Si ratio from 2.0 to 1.5. Oriented single crystals were then studied byExpand
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Structural controls on the solubility of CO2 in silicate melts: Part II: IR characteristics of carbonate groups in silicate glasses
The characteristics of carbonate groups dissolved in silicate glasses have been investigated using FTIR spectroscopy. Glasses of natural melt compositions are compared with simple analogues. ThisExpand
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SolEx: A model for mixed COHSCl-volatile solubilities and exsolved gas compositions in basalt
We present a software application, SolEx, to calculate basaltic melt and coexisting vapour compositions in the system C-O-H-S-Cl. Expand
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Structural controls on the solubility of CO2 in silicate melts: Part I: bulk solubility data
Abstract CO 2 solubility data are presented for a wide range of melt compositions in the following systems: SiO 2 –Na 2 O–Al 2 O 3 +CO 2 (SNA) at 2.0 GPa and 1600°C; SNA+CaO (SNAC) and SNA+MgO+CaOExpand
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Deep Mantle Cycling of Oceanic Crust: Evidence from Diamonds and Their Mineral Inclusions
Tiny minerals trapped inside Brazilian diamonds show that Earth’s carbon cycle extends down to the lower mantle. A primary consequence of plate tectonics is that basaltic oceanic crust subducts withExpand
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Slab melting as a barrier to deep carbon subduction
Interactions between crustal and mantle reservoirs dominate the surface inventory of volatile elements over geological time, moderating atmospheric composition and maintaining a life-supportingExpand
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Solubility, speciation and dissolution mechanisms for CO2 in melts on the NaAlO2–SiO2 join
CO2 solubility and speciation in melts along the NaAlO2–SiO2 join from Ne (NaAlSiO4) to a model rhyolite (Ry) composition (NaAlSi6O14), have been investigated as a function of pressure (10 to 25 kb)Expand
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Experimental Simulation of Closed-System Degassing in the System Basalt–H2O–CO2–S–Cl
Magma degassing processes are commonly elucidated by studies of melt inclusions in erupted phenocrysts and measurements of gas discharge at volcanic vents, allied to experimentally constrained modelsExpand
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13C MAS NMR: A method for studying CO2 speciation in glasses
13C-enriched glasses of albite, nepheline, and sodamelilite compositions were quenched from melts at 1350–1625°C and 10–35 kb, and studied using 13C and 27A1 MAS NMR. Distinct resonances forExpand
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The partitioning of water between olivine, orthopyroxene and melt synthesised in the system albite-forsterite-H2O
Coexisting forsterite, enstatite and silicate glass were synthesised from a water-bearing basalt analogue in programmed cooling experiments at 1.0, 1.5, 2.0 and 2.5 GPa. Hydrous species in each phaseExpand
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