Prof. Dr. Barbara I. Kleine Marshall
Prof. Dr. Barbara I. Kleine Marshall
Geozentrum Nordbayern
Professor of geochemistry and ore deposits
Telefon +49 (0)9131 8522699
barbara.kleine-marshall@fau.de
My research focuses on fluid movement and fluid-rock interaction processes in orogenic belts (e.g., Scotland), subduction zones (e.g., Cyclades in Greece) and rift systems (e.g., Iceland, East African rift). State-of-the-art analytical techniques (LA-ICP-MS, ICP-OES, IC, high TC/EA, IRMS, SIMS) are applied to detect chemical and isotope variations in rocks, minerals and fluids from active on-land and submerged hydrothermal systems or along former fluid pathways in metamorphic rocks. Comparing the obtained petrological and geochemical data with results from thermodynamic reaction path modelling using software programs like PhreeqC or GEMS aids to unravel the origin of fluids, processes that lead to (re-)mobilization of elements in the crust and estimate global chemical fluxes.
Particularly the role of sulphur (S) as powerful ligand to form stable metal-ligand complexes with a variety of different (critical) metals in crustal fluids may affect many global (natural and anthropogenic) element cycles in the crust. Sulphur isotope systematics of minerals and bulk rock coupled to their variations in metal and trace element concentrations are valuable tracers to help detect the origin of S in the system and investigate the formation mechanism (e.g., phase separation, fluid mixing, redox reactions) that cause sulphidation and accompanied metal enrichment of the crust.
| Jun 2023 – present |
Professor at the GeoZentrum at Friedrich-Alexander-Universität Erlangen-Nuremberg
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| Sept 2021 – Apr 2023 |
Adjunct and research associate at the Institute of Earth Sciences at University of Iceland
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| Sept 2019 – Aug 2021 |
Postdoctoral research fellow at the Institute of Earth Sciences at University of Iceland
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| Nov 2017 – Aug 2019 | Postdoc am Nordic Volcanological Centre (NordVulk) in Reykjavík |
| Nov 2010 – Jun 2015 |
Ph.D. candidate in Geology at the Department of Geological Sciences at Stockholm University
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| Sep 2009 – Oct 2010 |
Master in Geology at the Department of Geological Sciences at Stockholm University
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| Oct 2006 – Aug 2009 |
B.Sc. in Geosciences at the Department of Earth and Environmental Sciences at University of Freiburg i. Br.
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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