0000000000591828

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showing 2 related works from this author

Intense magmatic degassing through the lake of Copahue volcano, 2013–2014

2015

Here we report on the first assessment of volatile fluxes from the hyperacid crater lake hosted within the summit crater of Copahue, a very active volcano on the Argentina-Chile border. Our observations were performed using a variety of in situ and remote sensing techniques during field campaigns in March 2013, when the crater hosted an active fumarole field, and in March 2014, when an acidic volcanic lake covered the fumarole field. In the latter campaign, we found that 566 to 1373 t d -1 of SO 2 were being emitted from the lake in a plume that appeared largely invisible. This, combined with our derived bulk plume composition, was converted into flux of other volcanic species (H 2 O ~ 1098…

Atmospheric Science010504 meteorology & atmospheric sciencesEarth scienceGeochemistrySoil ScienceAquatic ScienceOceanography010502 geochemistry & geophysics01 natural sciencesCiencias de la Tierra y relacionadas con el Medio AmbienteAtmosphereVulcanologíaFlux (metallurgy)Impact craterGeochemistry and PetrologyCrater lakeEarth and Planetary Sciences (miscellaneous)COPAHUECopahue volcanic lake degassingGeophysicCiencias Exactas y NaturalesChemical compositionWater Science and Technology0105 earth and related environmental sciencesvolcanic lakegeographyMagmatic gasesgeography.geographical_feature_categoryEcologyCopahuePaleontologydegassingForestryFumarolePlumeDEGASSINGGeophysicsVolcano13. Climate actionSpace and Planetary ScienceEarth-Surface ProcesseCopahue volcanovolatile flux from crater lakeCIENCIAS NATURALES Y EXACTASGeologyVOLCANIC LAKEJournal of Geophysical Research: Solid Earth
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Phlogopite-pargasite coexistence in an oxygen reduced spinel-peridotite ambient

2021

AbstractThe occurrence of phlogopite and amphibole in mantle ultramafic rocks is widely accepted as the modal effect of metasomatism in the upper mantle. However, their simultaneous formation during metasomatic events and the related sub-solidus equilibrium with the peridotite has not been extensively studied. In this work, we discuss the geochemical conditions at which the pargasite-phlogopite assemblage becomes stable, through the investigation of two mantle xenoliths from Mount Leura (Victoria State, Australia) that bear phlogopite and the phlogopite + amphibole (pargasite) pair disseminated in a harzburgite matrix. Combining a mineralogical study and thermodynamic modelling, we predict …

010504 meteorology & atmospheric sciencesSciencephlogopiteGeochemistryengineering.materialamphibole010502 geochemistry & geophysics01 natural sciencesArticleMantle (geology)NOupper mantleMineral redox bufferUltramafic rockgeothermMetasomatismGeneralAmphibolePetrology0105 earth and related environmental sciencesPeridotitemodelMultidisciplinarymetasomatismphlogopite-pargasiteChemistrygeotherm; model; mantle xenoliths;PargasiteQRMineralogymantle xenolithsGeochemistryphlogopite; amphibole; metasomatism; upper mantleengineeringPhlogopiteMedicinemantle xenolithScientific Reports
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