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The presence of volatile, especially carbon dioxide (CO2), in silicate liquids is considered as a key parameter to magmatic degassing and eruptive processes. Unfortunately, due to experimental difficulties, our current knowledge on the CO2 effect on silicate melt structure is weak and relies on the observation of ex-situ recovered CO2-bearing glasses.In the present work, we confront the results obtained...
We conducted an experimental study to constrain the C–H–O solubility and speciation in hydrous silicate melts equilibrated under reduced fO 2 conditions. Haplobasaltic glasses in the NCMAS-C–O–H system were synthesized using IHPV at 1250°C, 200–300MPa with variable applied fH 2 so as to vary fO 2 . Recovered rapidly quenched glasses were characterized using various spectroscopic...
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