Sebastian Viehmann, Dr. Dipl.-Geol.

sebastian.viehmann@univie.ac.at

Room Number: 2A375
Tel.: +43-1-4277-53680

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:

2017 – current: 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


 Publications (taken from u:cris)


Showing entries 0 - 16 out of 16

2019


Cd Isotopes trace periodic (bio)geochemical metal cycling at the verge of the Cambrian animal evolution. / Hohl, Simon V.; Jiang, Shao-Yong; Wei, Hai-Zhen; Pi, Dao-Hui; Liu, Qian; Viehmann, Sebastian; Galer, Stephan J. G.

In: Geochimica et Cosmochimica Acta, No. 263, 2019, p. 195-214.

Research output: Contribution to journalArticle


Metal cycling in Mesoproterozoic microbial habitats: Insights from trace elements and stable Cd isotopes in stromatolites. / Viehmann, Sebastian; Hohl, Simon V.; Kraemer, Dennis ; Bau, Michael; Walde, Detlef H.G.; Galer, Stephen J.G.; Jiang, Shao-Yong; Meister, Patrick.

In: Gondwana Research, Vol. 67, 2019, p. 101-114.

Research output: Contribution to journalArticle


Mobilization and isotope fractionation of chromium during water-rock interaction in presence of siderophores. / Kraemer, Dennis ; Frei, Robert; Viehmann, Sebastian; Bau, Michael.

In: Applied Geochemistry, Vol. 102, 2019.

Research output: Contribution to journalArticle


Vanadium and its isotope composition of river water and seawater: Analytical improvement and implications for vanadium isotope fractionation. / Schuth, Stephan; Brüske, Annika; Hohl, Simon V.; Jiang, Shao-Yong; Meinhardt, Ann-Katrin; Gregory, Daniel D.; Viehmann, Sebastian; Weyer, Stefan.

In: Chemical Geology, 2019.

Research output: Contribution to journalArticle


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. / Schier, Katharina; Bau, Michael; Münker, Carsten; Beukes, Nicolas; Viehmann, Sebastian.

In: Precambrian Research, 17.07.2018.

Research output: Contribution to journalArticle


Decoupled Hf and Nd isotopes in suspended particles and in the dissolved load of Late Archean seawater. / Viehmann, Sebastian; Bau, Michael; Hoffmann, J. Elis ; Münker, Carsten.

In: Chemical Geology, Vol. 483, 2018, p. 111-118.

Research output: Contribution to journalArticle


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. / Szilas, Kristoffer; Hoffmann, J. Elis; Schulz, Toni; Hansmeier, Christina; Polat, Ali; Viehmann, Sebastian; Kasper, Hainno; Münker, Carsten.

In: Chemie der Erde / Geochemistry, Vol. 76, No. 543-554, 2016.

Research output: Contribution to journalArticle


Geochemical characterisation of Neoproterozoic marine habitats: Evidence from trace elements and Nd isotopes in the Urucum iron and manganese formations, Brazil. / Viehmann, Sebastian; Bau, Michael; Bühn, Bernhard; Dantas, Elton L.; Walde, Detlef H.G.

In: Precambrian Research, Vol. 282, No. 74-96, 2016.

Research output: Contribution to journalArticle


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. / Hoffmann, J. Elis ; Kröner, Alfred; Hegner, Ernst; Viehmann, Sebastian; Xie, H.; Iaccheri, Linda M.; Schneider, Kathrin; Hofmann, Axel; Wong, J.; Geng, H.; Yang, J.

In: Precambrian Research, Vol. 276, No. 43-66, 2016.

Research output: Contribution to journalArticle


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. / Viehmann, Sebastian; Bau, Michael; Hoffmann, J. Elis; Münker, Carsten.

In: Precambrian Research, Vol. 270, No. 165-180, 2015.

Research output: Contribution to journalArticle


Sm-Nd and Lu-Hf isotope and trace-element systematics of Mesoarchaean amphibolites, inner Ameralik fjord, southern West Greenland. / Szilas, Kristoffer; Hoffmann, J. Elis; Hansmeier, Christina ; Hollis, J.A. ; Münker, Carsten ; Viehmann, Sebastian; Kasper, Hainno U.

In: Mineralogical Magazine, Vol. 79 (4), No. 857-876, 2015.

Research output: Contribution to journalArticle


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. / Viehmann, Sebastian; Bau, Michael; Smith, Albertus J.B.; Beukes, Nic J.; Dantas, Elton L.; Bühn, Bernhard.

In: Journal of African Earth Sciences, Vol. 111, No. 322-334, 2015.

Research output: Contribution to journalArticle


2014


Decoupled Hf-Nd isotopes in Neoarchean seawater reveal weathering of emerged continents. / Viehmann, Sebastian; Hoffmann, J. Elis; Münker, Carsten; Bau, Michael.

In: Geology, Vol. 42 (2), No. 115-118, 2014.

Research output: Contribution to journalArticle


2013


Visualisation and quantification of CV chondrites using micro-tomography. / Hezel, Dominik C.; Elangovan, P.; Viehmann, Sebastian; Howard, L.; Abel, Richard L.; Armstrong, R.

In: Geochimica et Cosmochimica Acta, Vol. 116, No. 33-40, 2013.

Research output: Contribution to journalArticle


Showing entries 0 - 16 out of 16