Detail

Dipl.-Geol. Sebastian Viehmann, PhD

T: +43-1-4277-53606

sebastian.viehmann@univie.ac.at

https://fums-research.webnode.at/

Research Interests:

1. Evolution of early Earth's environments
2. Biogeochemistry
3. (Marine) chemical sediments
4. Trace element and isotope geochemistry
5. High field strength and rare earth element geochemistry
6. Geochronology
7. Weathering and erosion processes

Short CV:
2021- today: Post-doctoral researcher within the FWF project "The evolution of the earliest marine habitats on Earth" (P 34238; stand-alone project)

2019 - 2021: Senior research fellow at the Department of Geology at the University of Vienna, Austria.

2017 – 2019: Post-doctoral research associate at the Department of Geodynamics and Sedimentology at the University of Vienna, Austria funded by an individual Marie-Curie fellowship of the European Union Horizon 2020 programme.
Project ELEMIN: How the earliest life on Earth became mineralised.

2016 - 2017: Guest scientist at the Department of Geodynamics and Sedimentology at the University of Vienna, Austria.

2011 – 2016: PhD student and research associate at the Department of Physics and Earth Sciences at the Jacobs University Bremen, Germany.
Thesis topic: “The evolution of Precambrian environments and their impact on the trace element and Hf-Nd isotopic composition of ancient seawater”.

2004 – 2011: Diploma (MSc equivalent) in Geology/Paleontology at the Rheinische Friedrich-Wilhelms Universität Bonn, Germany.
Thesis topic: “Seawater-derived REY, trace element and HFSE systematics of Archean Banded Iron Formations (BIFs)”.

Born 1985 in Bergisch Gladbach, Germany

List of publications: https://publons.com/researcher/2232183/sebastian-viehmann

Bau, M., Frei, R., Garbe-Schönberg, D., & Viehmann, S. (2022). High-resolution Ge-Si-Fe, Cr isotope and Th-U data for the Neoarchean Temagami BIF, Canada, suggest primary origin of BIF bands and oxidative terrestrial weathering 2.7Ga ago. Earth and Planetary Science Letters, 589(117579), [117579]. https://doi.org/10.1016/j.epsl.2022.117579

Mundl-Petermeier, A., Viehmann, S., Tusch, J., Bau, M., Kurzweil, F., & Münker, C. (2022). Earth’s geodynamic evolution constrained by 182W in Archean seawater. Nature Communications, 13(1), [2701]. https://doi.org/10.1038/s41467-022-30423-3

Hohl, S. V., Rodler, A., Viehmann, S., Huang, X., Xu, J., Gaucher, C., Germs, G. J. B., Hegenberger, W., Goderis, S., Wei, H., & Frei, R. (2022). C, Sr, Nd isotope chemostratigraphy and zircon provenance of the Witvlei Group (Namibia): Neoproterozoic glaciations and seawater evolution. Precambrian Research, 372(106600), [106600]. https://doi.org/10.1016/j.precamres.2022.106600

Stüeken, E. E., Viehmann, S., & Hohl, S. V. (2022). Contrasting nutrient availability between marine and brackish waters in the late Mesoproterozoic: Evidence from the Paranoa Group, Brazil. Geobiology, 20(2), 159-174. https://doi.org/10.1111/gbi.12478

Hofbauer, B., Viehmann, S., Gier, S., Bernasconi, S., & Meister, P. (2021). Microfacies and C/O-isotopes in lacustrine dolomites reflect variable environmental conditions in the Germanic Basin (Arnstadt Formation, Upper Triassic). Austrian Journal of Earth Sciences, 114(1), 66-87. https://doi.org/10.17738/ajes.2021.0004

Huang, Q., Viehmann, S., Walde, D. H. G., & Li, W. (2021). Iron isotope constraints on the metal source and depositional environment of the Neoproterozoic banded iron- and manganese deposits in Urucum, Brazil. Chemie der Erde / Geochemistry, 81(3), [125771]. https://doi.org/10.1016/j.chemer.2021.125771

Schulz, T., Viehmann, S., Hezel, D. C., Koeberl, C., & Bau, M. (2021). Highly Siderophile Elements and Coupled Fe-Os Isotope Signatures in the Temagami Iron Formation, Canada: Possible Signatures of Neoarchean Seawater Chemistry and Earth’s Oxygenation History. Astrobiology, 21(8), 924-939. https://doi.org/10.1089/ast.2020.2311

Hohl, S. V., & Viehmann, S. (2021). Stromatolites as geochemical archives to reconstruct microbial habitats through deep time: Potential and pitfalls of novel radiogenic and stable isotope systems. Earth-Science Reviews, 218, [103683]. https://doi.org/10.1016/j.earscirev.2021.103683

Viehmann, S., Hohl, S. V., Tepe, N., Van Kranendonk, M., Reitner, J., Hofmann, T., Koeberl, C., & Meister, P. (2021). Trace metals and Nd isotopes in 3.35 Ga old stromatolites of the Strelley Pool Formation (Australia) unravel the genesis of carbonates and chert. in EGU General Assembly 2021 [EGU21-1984]

Schier, K., Bau, M., Smith, A. J. B., Beukes, N., Coetzee, L. L., & Viehmann, S. (2020). Chemical evolution of seawater in the Transvaal Ocean between 2426 Ma (Ongeluk Large Igneous Province) and 2413 Ma ago (Kalahari Manganese Field). Gondwana Research, 88, 373-388. https://doi.org/10.1016/j.gr.2020.09.001

Viehmann, S., Reitner, J., Tepe, N., Hohl, S. V., Van Kranendonk, M., Hofmann, T., Köberl, C., & Meister, P. (2020). Carbonates and cherts as archives of seawater chemistry and habitability on a carbonate platform 3.35 Ga ago: Insights from Sm/Nd dating and trace element analysis from the Strelley Pool Formation, Western Australia. Precambrian Research, 344, [105742]. https://doi.org/10.1016/j.precamres.2020.105742

Hohl, S. V., Jiang, S-Y., Viehmann, S., Wei, W., Liu, Q., Wei, H-Z., & Galer, S. J. G. (2020). Trace Metal and Cd Isotope Systematics of the Basal Datangpo Formation, Yangtze Platform (South China) Indicate Restrained (Bio)Geochemical Metal Cycling in Cryogenian Seawater. Geosciences, 10(1), [36]. https://doi.org/10.3390/geosciences10010036

Schuth, S., Brüske, A., Hohl, S. V., Jiang, S-Y., Meinhardt, A-K., Gregory, D. D., Viehmann, S., & Weyer, S. (2019). Vanadium and its isotope composition of river water and seawater: Analytical improvement and implications for vanadium isotope fractionation. Chemical Geology, 528, [119261]. https://doi.org/10.1016/j.chemgeo.2019.07.036

Hohl, S. V., Jiang, S-Y., Wei, H-Z., Pi, D-H., Liu, Q., Viehmann, S., & Galer, S. J. G. (2019). Cd Isotopes trace periodic (bio)geochemical metal cycling at the verge of the Cambrian animal evolution. Geochimica et Cosmochimica Acta, 263(263), 195-214. https://doi.org/10.1016/j.gca.2019.07.036

Kraemer, D., Viehmann, S., Banks, D., Sumoondur, A. D., Koeberl, C., & Bau, M. (2019). Regional variations in fluid formation and metal sources in MVT mineralization in the Pennine Orefield, UK: Implications from rare earth element and yttrium distribution, Sr-Nd isotopes and fluid inclusion compositions of hydrothermal vein fluorites. Ore Geology Reviews, 107, 960-972. https://doi.org/10.1016/j.oregeorev.2019.03.014

Viehmann, S., Hohl, S. V., Kraemer, D., Bau, M., Walde, D. H. G., Galer, S. J. G., Jiang, S-Y., & Meister, P. (2019). Metal cycling in Mesoproterozoic microbial habitats: Insights from trace elements and stable Cd isotopes in stromatolites. Gondwana Research, 67, 101-114. https://doi.org/10.1016/j.gr.2018.10.014

Schulz, T., Viehmann, S., Hezel, D. C., & Koeberl, C. (2019). Coupled Fe-Os Isotope Signatures in Banded Iron Formations - Decoding Earth's Oxygenation History and the Chemical Evolution of Precambrian Seawater. The first Biliion Years: Habitability, Big Sky, Montana, USA / Vereinigte Staaten.

Kraemer, D., Frei, R., Viehmann, S., & Bau, M. (2019). Mobilization and isotope fractionation of chromium during water-rock interaction in presence of siderophores. Applied Geochemistry, 102.

Prost, T., Viehmann, S., Hohl, S. V., Tepe, N., Jiang, S. Y., & Meister, P. (2019). The depositional environment of the Sturtian Fulu Iron Formation (China).

Schier, K., Bau, M., Münker, C., Beukes, N., & Viehmann, S. (2018). Trace element and Nd isotope composition of shallow seawater prior to the Great Oxidation Event: Evidence from stromatolitic bioherms in the Paleoproterozoic Rooinekke and Nelani Formations, South Africa. Precambrian Research.