Prof. Dr. Barbara I. Kleine-Marshall

Meine Forschung konzentriert sich auf Fluidbewegungen und Fluid-Gesteins-Wechselwirkungsprozesse in Orogenen (z. B. Schottland), Subduktionszonen (z. B. Kykladen in Griechenland) und Grabensystemen (z. B. Island, Ostafrikanischer Grabenbruch). Modernste Analysetechniken (LA-ICP-MS, ICP-OES, IC, hohe TC/EA, IRMS, SIMS) werden eingesetzt, um chemische Veränderungen und stabile Isotopenverhältnisse in Gesteinen, Mineralen und Wässer aus aktiven geothermischen und hydrothermalen Systemen zu messen. Vergleiche der erhaltenen petrologischen und geochemischen Daten mit Ergebnissen aus Modellierung thermodynamischer Reaktionspfade mithilfe von Softwareprogrammen wie PhreeqC oder GEMS helfen dabei, den Ursprung von Fluiden, sowie die Prozesse, die zur (Re-)Mobilisierung von Elementen in der Kruste führen, zu entschlüsseln und globale chemische Stoffkreisläufe zu berechnen.

Insbesondere die Rolle von Schwefel wird dabei untersucht, der als wichtiger Ligand die Bildung stabiler Metall-Ligand-Komplexe mit einer Vielzahl verschiedener (kritischer) Metalle in Krustenfluiden eingehen kann und so viele globale (natürliche und anthropogene) Stoffkreisläufe in der Kruste beeinflusst. Schwefelisotopenverhältnisse von Mineralien und Gesteinen in Verbindung mit Metall- und Spurenelementkonzentrationen sind wertvolle Indikatoren, die dabei helfen, den Ursprung von S im System zu erkennen und den Entstehungsmechanismus (z. B. Phasentrennung, Fluidmischung, Redoxreaktionen) zu untersuchen, der zur Anreicherung von Schwefel und damit einhergehende Metallanreicherungen in der Erdkruste führen.

2023

Ranta, E., Halldórsson, S.A., Barry, P.H., Ono, S., Gunnarsson-Robin, J., Kleine, B.I., Ricci, A., Fiebig, J., Sveinbjörnsdóttir, Á.E., Stefánsson, A. (2023) Deep magma degassing and volatile fluxes through volcanic hydrothermal systems: Insights from the Askja and Kverkfjöll volcanoes, Iceland. Journal of Volcanology and Geothermal Research 436, 107776. doi: 0.1016/j.jvolgeores.2023.107776

Pisani, L., Koltai, G., Dublyansky, Y., Kleine, B.I., Whitehouse, M.J., Skrzypek, E. Carbone, C., Christoph Spötl, C., Antonellini, M., Bezerra, F.H., De Waele, J. (2023) Hydrothermal silicification and hypogene dissolution of an exhumed Neoproterozoic carbonate sequence in Brazil: Insights from fluid inclusion microthermometry and silicon-oxygen isotopes. Basin Research 35,  1102-1127. doi: 10.1111/bre.12748

2022

Combaudon, V., Moretti, I., Kleine, B.I., Stefánsson, A. (2022) Hydrogen emissions from hydrothermal fields in Iceland and comparison with the Mid-Atlantic Ridge. International Journal of Hydrogen Energy 47, 10217-10227. doi: 10.1016/j.ijhydene.2022.01.101

Ricci, A., Kleine, B.I., Fiebig, J., Gunnarsson-Robin, J., Kamunya, K.M., Mountain, B., Stefánsson, A. (2022) Equilibrium and kinetic on molecular hydrogen abundance and isotope fractionation in hydrothermal fluids. Earth and Planetary Science Letters 579, 117338. doi: 10.1016/j.epsl.2021.117338

Galeczka, I., Stefánsson, A., Kleine, B.I., Gunnarsson-Robin, J., Snæbjörnsdóttir, S.Ó., Sigfússon, B., Gunnarsdóttir, S.H., Weisenberger, T.B., Oelkers, E.H. (2022) A pre-injection assessment of CO2 and H2S mineralization reactions at the Nesjavellir (Iceland) geothermal storage site. International Journal of Greenhouse Gas Control 115, 103610. doi: 10.1016/j.ijggc.2022.103610

Halldórsson, S.A., Marshall, E.W., Caracciolo, A., Matthews, S., Bali, E., Rasmussen, M.B., Ranta, E., Gunnarsson Robin, J., Guðfinnsson, Sigmarsson, O., Maclennan, J., Jackson, M.G., Whitehouse, M.J., Jeon, H., van der Meer, Q.H.A., Mibei, G.K., Kalliokoski, M.H., Repczynska, M.M., Rúnarsdóttir, R.H., Sigurðsson, G., Pfeffer, M.A., Scott, S.W., Kjartansdóttir, R., Kleine, B.I., Oppenheimer, C., Aiuppa, A., Ilyinskaya, E., Bitetto, M., Giudice, G., Stefánsson, A. (2022) Rapid evolution of a deep magmatic system revealed by the Fagradalsfjall eruption, Iceland.Nature 609, 529-534. doi: 10.1038/s41586-022-04981-x

Kleine, B.I., Stefánsson, A., Zierenberg, R.A., Jeon, H., Whitehouse, M.J., Jónasson, K., Fridleifsson, G.Ó., Weisenberger, T.B. (2022) Sulfate (re-)cycling in the oceanic crust: Effects of seawater-rock interaction, sulfur reduction and temperature on the abundance and isotope composition of anhydrite. Geochimica et Cosmochimica Acta 317, 65-90. doi: 10.1016/j.gca.2021.10.016

2021

Kleine, B.I., Gunnarsson-Robin, J., Kamunya, K.M., Ono, S., Stefánsson, A. (2021) Source controls on sulfur abundance and isotope fractionation in hydrothermal fluids in the Olkaria geothermal field, Kenya. Chemical Geology 582, 120446. doi: 10.1016/j.chemgeo.2021.120446

2020

Kleine, B.I., Stefánsson, A., Kjartansdóttir, R., Prause, S., Weisenberger, T.B., Reynolds, H.I, Sveinbjörnsdóttir, Á.E., Jackson, M.D., Gudmundsson, M.T. (2020) The Surtsey volcano geothermal system: an analogue for seawater-oceanic crust interaction with implications for the elemental budget of the oceanic crust. Chemical Geology 550, 119702. doi: 10.1016/j.chemgeo.2020.119702

Kleine, B.I., Stefánsson, A., Halldórsson, S.A., Barnes, J.D. (2020) Impact of fluid-rock interaction on water uptake of the Icelandic crust: Implications for the hydration of the oceanic crust and the subducted water flux. Earth and Planetary Science Letters 538, 116210. doi: 10.1016/j.epsl.2020.116210

Heřmanská, M., Kleine, B.I., Stefánsson, A. (2020) Geochemical constraints on supercritical fluids in geothermal systems. Journal of Volcanology and Geothermal Research 394, 1-12. doi: 10.1016/j.jvolgeores.2020.106824

2019

Heřmanská, M., Kleine, B.I., Stefánsson, A. (2019) Supercritical fluid geochemistry in geothermal systems. Geofluids 2019, 1-14. doi: 10.1155/2019/6023534

Jackson, M.D., Guðmundsson, M.T., Weisenberger, T.B., Rhodes, J.M., Stefánsson, A., Kleine, B.I., Lippert, P.C., Marquardt, J.M., Reynolds, H.I., Kück, J., Marteinsson, V.T., Vannier, P., Bach, W., Barich, A., Bergsten, P., Bryce, J.G., Cappelletti, P., Couper, S., Fahnestock, M.F., Gorny, C.F., Grimaldi, C., Groh, M., Guðmunsson, Á., Gunnlaugsson, Á.T., Hamlin, C., Högnadóttir, T., Jónasson, K., Jónsson, S.S., Jørgensen, S.L., Klonowski, A., Marshall, B., Massey, E., McPhie, J., Moore, J.G., Ólafsson, E.S., Onstad, S.L., Perez, V., Prause, S., Snorrason, S.P., Türke, A., White, J.D.L., Zimanowski, B. (2019) SUSTAIN drilling at Surtsey volcano, Iceland, tracks hydrothermal and microbiological interactions in basalt 50 years after eruption. Scientific Drilling 7, 1-12. doi: 10.5194/sd-7-1-2019.

Weisenberger, T.B., Guðmundsson, M.T., Jackson, M.D., Gorny, C.F., Türke, A., Kleine, B.I., Marshall, B., Jørgensen, S.L., Marteinsson, V.Þ., Stefánsson, A., White, J.D.L., Barich, A., Bergsten, P., Bryce, J., Couper, S., Fahnestock, F., Franzson, H., Grimaldi, C., Groh, M., Guðmundsson, A., Gunnlaugsson, Á.Þ., Hamelin, C., Högnadóttir, Þ., Jónasson, K., Jónsson, S.S., Klonowski, A., Kück, J., Magnússon, R.L., Massey, E., McPhie, J., Ólafsson, E.S., Onstad, S.L., Prause, P., Perez, V., Rhodes, J.M., Snorrason, S.P. (2019) Operational Report for the 2017 Surtsey Underwater volcanic System for Thermophiles, Alteration processes and INnovative concretes (SUSTAIN) drilling project at Surtsey Volcano, Iceland. GFZ German Research Centre for Geosciences. doi: 10.2312/ICDP.5059.001

2018

Kleine, B.I., Stefánsson, A., Halldórsson, S.A., Whitehouse, M.J., Jónasson, K. (2018) Silicon and oxygen isotopes unravel quartz formation processes in the Icelandic crust. Geochemical Perspectives Letters 7, 5-11. doi: 10.7185/geochemlet.1811

2017

Kleine, B.I., Stefánsson, A. (2017) Hypogene. In: Encyclopedia of Geochemistry, Wiliam M. White (ed.), Springer International Publishing. doi: 10.1007/978-3-319-39193-9_67-1.

Stefánsson, A., Kleine, B.I. (2017) Hydrothermal alteration. In: Encyclopedia of Geochemistry, Wiliam M. White (ed.), Springer International Publishing. doi: 10.1007/978-3-319-39193-9_65-1.

2016

Kleine, B.I., Pitcairn, I., Skelton, A. (2016). Mineralogical controls on metamorphic fluid flow in metabasaltic sills from Islay, Scotland. Lithos 248-251, 22-39. doi: 10.1016/j.lithos.2016.01.011

Kleine, B.I., Zhao, Z., Skelton, A. (2016). Fast fluid fluxes along brittle fractures in greenschist facies metamorphosed mica-schists on Syros, Greece. American Journal of Science 316, 169-201. doi: 10.2475/02.2016.03

2015

Skelton, A., Lewerentz, A., Kleine, B.I., Webster, D., Pitcairn, I. (2015). Structural channeling of metamorphic fluids on Islay, Scotland: implications for paleoclimatic reconstruction. Journal of Petrology 56, 2145-2172. doi: 10.1093/petrology/egv067

Kleine, B.I., Pitcairn, I., Skelton A. (2015). The mechanism of fluid flow recorded by coupled hydration and carbonation of epidote-amphibolite facies metabasaltic sills in the SW Scottish Highlands. American Mineralogist100, 2702-2717. doi: 10.2138/am-2015-5321

2014

Kleine, B.I., Skelton, A., Huet, B., Pitcairn, I. (2014). Preservation of blueschist facies minerals along a shear zone by coupled metasomatism and fast flowing CO₂-bearing fluids. Journal of Petrology 55, 1905-1939. doi: 10.1093/petrology/egu045