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Displaying 16 results.
    • Speech
    Seasonal magnesium isotope variations in soil solutions reflecting physico-chemical processes controlling soil weathering fluxes
    Opfergelt, Sophie[UCL] Georg, R.B. Burton, K.W. Guicharnaud, R. Siebert, C. Gislason, S.R. Halliday, A.N. (2011) Goldschmidt conference — Prague, Czech Republic
    • Speech
    Changing riverine silicon isotope delivery to the ocean over glacial-interglacial intervals? Evidence from glaciated basaltic terrains
    Opfergelt, Sophie[UCL] Burton, K.W. Pogge von Strandmann , P.A.E. Gislason, S.R. Halliday, A.N. (2013) Goldschmidt conference — Florence, Italy
    • Speech
    Multi-isotopic approach to assess the role of soil weathering processes on rivers draining a basaltic catchment
    Opfergelt, Sophie[UCL] Georg, D. Burton, K.W. Gislason, S.R. Sigfusson, B Halliday, A.N. (2009) AGU Fall meeting — San Francisco
    • Speech
    Magnesium isotope fractionation in volcanic soils controlled by clay mineralogy and exchangeable Mg
    Opfergelt, Sophie[UCL] Georg, R.B. Burton, K.W. Delvaux, Bruno[UCL] Siebert, C. Guicharnaud, R Cadiboche, Y.M Halliday, A.N. (2010) AGU Fall Meeting, 2010 — San Francisco, USA
    • Journal article
    Riverine silicon isotope variations in glaciated basaltic terrains: implications for the Si delivery to the ocean over glacial-interglacial intervals
    Opfergelt, Sophie[UCL] Burton, K.W. Pogge von Strandmann, P.A.E. Gislason, S.R. Halliday, A.N. (2013) Earth and Planetary Science Letters — Vol. 369-370, p. 211-219 (2013)
    • Journal article
    Corrigendum to: Riverine silicon isotope variations in glaciated basaltic terrains: implications for the Si delivery to the ocean over glacial-interglacial intervals [Earth Planet. Sci. Lett. 369-370 (2013) 211-219]
    Opfergelt, Sophie[UCL] Burton, K.W. Pogge von Strandmann , P.A.E. Gislason, S.R. Halliday, A.N. (2013) Earth and Planetary Science Letters — Vol. 375, p. 451-452 (2013)
    • Speech
    Contrasting silicon and magnesium isotope fractionation with clay mineralogy in volcanic soil weathering sequences, Guadeloupe
    Opfergelt, Sophie[UCL] Delvaux, Bruno[UCL] Georg, R.B. Cabidoche, Y.M. Burton, K.W. Halliday, A.N. (2011) Goldschmidt conference — Prague, Czech Republic
    • Speech
    Seasonal freeze-thaw cycles and iron mobilization from peat soils: role of organo-metallic complexes
    Opfergelt, Sophie[UCL] Williams, Helen Cornélis, Jean-Thomas Guicharnaud, Rannveig Georg, R.B. Siebert, Chris Gislason, S.R. Halliday, A.N. Burton, K.W. (2016) AGU Fall Meeting 2016 — San Francisco
    • Journal article
    Magnesium retention on the soil exchange complex controlling Mg isotope variations in soils, soil solutions and vegetation in volcanic soils
    Opfergelt, Sophie[UCL] Burton, K.W. Georg, R.B. West, A.J. Guicharnaud, R.A. Sigfusson, B. Siebert, C. Gislason, S.R. Halliday, A.N. (2014) Geochimica et Cosmochimica Acta — Vol. 125, p. 110-130 (2014)
    • Speech
    Molybdenum isotopes as proxy for soil processes
    Siebert, C. Pett-Ridge, J. Opfergelt, Sophie[UCL] Halliday, A.N. Burton, K.W. (2013) EnvironMetal Isotopes 2013 (EMI2013) — Ascona, Switzerland
    • Speech
    Magnesium isotopes as a proxy of physico-chemical processes controlling soil weathering fluxes
    Opfergelt, Sophie[UCL] Georg, R.B. Burton, K.W. Guicharnaud, R Siebert, C. Gislason, S.R. Halliday, A.N. (2011) Young Soil Scientists Day, 2011 — Brussels
    • Journal article
    Silicon isotopes and the tracing of desilication in volcanic soil weathering sequences, Guadeloupe
    Opfergelt, Sophie[UCL] Georg, R.B. Delvaux, Bruno[UCL] Cabidoche, Y.-M. Burton, K.W. Halliday, A.N. (2012) Chemical Geology — Vol. 326-327, p. 113-122 (2012)
    • Journal article
    Iron and silicon isotope behaviour accompanying weathering in Icelandic soils, and the implications for iron export from peatlands
    Opfergelt, Sophie[UCL] Williams, H.M Cornélis, Jean-Thomas Guicharnaud, R.A Georg, R.B. Siebert, C. Gislason, S.R. Halliday, A.N. Burton, K.W. (2017) Geochimica et Cosmochimica Acta — , no.217, p. 273-291 (2017)
    • Journal article
    Silicon isotopes in allophane as a proxy for mineral formation in volcanic soils
    Opfergelt, Sophie[UCL] Burton, K.W. Guicharnaud, R. Siebert, C. Gislason, S.R. Halliday, A.N. (2011) Applied Geochemistry — Vol. 26, no. S1, p. S115-S118 (2011)
    • Speech
    Controls on magnesium fluxes from basalt weathering and the role of plant cycling: evidence from Mg isotopes in Icelandic soils
    Opfergelt, Sophie[UCL] Burton, K.W. Georg, R.B. West, A.J. Guicharnaud, R.A. Sigfusson, B. Siebert, C. Gislason, S.R. Halliday, A.N. (2013) EnvironMetal Isotopes — Ascona, Switzerland
    • Speech
    Impact of freshwater diatom productivity on silicon isotopes and silicon fluxes: Lake Myvatn, Iceland
    Opfergelt, Sophie[UCL] Eiriksdottir, E.S. Burton, K.W. Einarsson, A Siebert, C. Gislason, S.R. Halliday, A.N. (2011) Isotopes in Biogenic Silica (IBiS), 2011 — Antwerp, Belgium