Sebastian Viehmann, Dr. Dipl.-Geol.

sebastian.viehmann@univie.ac.at

Raumnummer: 2A277
Tel.: +43-1-4277-53606

Sebastian Viehmann


Research Interests:

  • Evolution of early Earth's environments
  • Biogeochemistry
  • (Marine) chemical sediments
  • Trace element and isotope geochemistry
  • High field strength and rare earth element geochemistry
  • Geochronology
  • Weathering and erosion processes

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

Short CV:

2019 - today: 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

Schier K., Bau M., Smith A.J.B., Beukes, N.J., Coetzee L.L., Viehmann S., in press: Chemical evolution of seawater in the Transvaal Ocean between 2426 Ma (Ongeluk Large Igneous Province) and 2413 Ma (Kalahari Manganese Field). Gondwana Research.
DOI: 10.1016/j.gr.2020.09.001

Viehmann S., Reitner J., Tepe N., Hohl, S.V., Van Kranendonk, M., Hofmann, T., Koeberl, 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.
DOI: 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 2020 (10), 36.
DOI: 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, 5 December 2019, 119261.
DOI: 10.1016/j.chemgeo.2019.07.036

Viehmann S., Hohl S.V., Kraemer D. Bau M., Walde, D.H.G., Galer S.J., 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.
DOI: 10.1016/j.gr.2018.10.014

Hohl, S.V., Jiang, S.-Y., Wei, H.-Z., Pi, D.-H., Liu, Q., Viehmann, S., Galer, S.J., 2019. Cd Isotopes trace periodic (bio)geochemical metal cycling at the verge of the Cambrian animal evolution. Geochimica et Cosmochimica Acta 263, 195-214.
DOI: 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.
DOI: 10.1016/j.oregeorev.2019.03.014

Kraemer D., Frei R., Viehmann S. & Bau M., 2019: Mobilization and isotope fractionation of chromium during water-rock interaction in the presence of siderophores. Applied Geochemistry 102, 44-54.
DOI: 10.1016/j.apgeochem.2019.01.007

Viehmann S., 2018: Hf-Nd Isotopes in Archean Marine Chemical Sediments: Implications for the Geodynamical History of Early Earth and Its Impact on Earliest Marine Habitats. Geosciences 8 (7). 263, 1-15.
DOI: 10.3390/geosciences8070263

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. 315, 92-102.
DOI: 10.1016/j.precamres.2018.07.014

Viehmann S., Bau M., Hoffmann, J.E. & Münker C. 2018: Decoupled Hf-Nd isotopes in suspended particles and in the dissolved load of Late Archean seawater. Chemical Geology 483, 111-118.
DOI: 10.1016/j.chemgeo.2018.01.017

Szilas K., Hoffmann J.E., Schulz T., Hansmeier C., Polat A., Viehmann S., Kasper H.U.& Münker C., 2016: Combined bulk-rock Hf- and Nd-isotope compositions of Mesoarchaean metavolcanic rocks from the Ivisaartoq Supracrustal Belt, SW Greenland: Deviations from the mantle array caused by crustal recycling. Chemie der Erde 76, 543-554.
DOI: 10.1016/j.chemer.2016.09.004

Viehmann S., Bau M., Bühn B., Dantas E.L. & Walde D.H.G., 2016: Geochemical characterisation of Neoproterozoic marine habitats: Evidence from trace elements and Nd isotopes in the Urucum iron and manganese formations, Brazil. Precambrian Research 282, 74-96.
DOI: 10.1016/j.precamres.2016.07.006

Hoffmann J.E., Kröner A., Hegner E., Viehmann S., Xie H., Iaccheri L.M., Schneider K., Hofmann A., Wong J., Geng H. &Yang J., 2016: Source composition, fractional crystallization and magma mixing processes in  the 3.48-3.43 Ga Tsawela tonalite suite (Ancient Gneiss Complex, Swaziland) – implications for Palaeoarchean geodynamics. Precambrian Research 276, 43-66.
DOI: 10.1016/j.precamres.2016.01.026

Viehmann S., Bau M., Smith A.J.B., Beukes N.J., Dantas E.L. & Bühn B., 2015: The reliability of ~2.9 Ga old Witwatersrand banded iron formations (South Africa) as archives for Mesoarchean seawater: Evidence from REE and Nd isotope systematics. Journal of African Earth Sciences 111, 322-334.
DOI: 10.1016/j.jafrearsci.2015.08.013

Szilas K., Hoffmann J.E., Hansmeier C., Hollis J.A., Münker, C., Viehmann S. & Kasper H.U., 2015: Sm-Nd   and Lu-Hf isotope and trace-element systematics of Mesoarchaean amphibolites, inner Ameralik fjord, southern West Greenland. Mineralogical Magazine 79 (4), 857-876.
DOI: 10.1180/minmag.2015.079.4.02

Viehmann S., Bau M., Hoffmann J.E. & Münker C., 2015: Geochemistry of the Krivoy Rog Banded Iron Formation, Ukraine, and the impact of peak episodes of increased global magmatic activity on the trace element composition of Precambrian seawater. Precambrian Research 270, 165-180.
DOI: 10.1016/j.precamres.2015.09.015

Viehmann S., Hoffmann J.E., Münker C. & Bau M., 2014: Decoupled Hf-Nd isotopes in Neoarchean seawater reveal weathering of emerged continents. Geology 42 (2), 115-118.
DOI: 10.1130/G35014.1

Hezel D.C., Elangovan P., Viehmann S., Howard L., Abel R.L. & Armstrong R., 2013: Visualisation and quantification of CV chondrites using micro-tomography. Geochimica et Cosmochimica Acta 116, 33-40.
DOI: 10.1016/j.gca.2012.03.015