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Sebastian Viehmann, Dr. (guest)


s.viehmann85@googlemail.com

Room Number: 2A375
Tel.: +43-1-4277-53646
Fax: +43-1-4277-9534

Research Interests:

  • Evolution of early Earth's environments
  • (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/

Peer-Reviewed Publications

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 (in press). 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.

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.

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.

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.

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.

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.

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.
 

Conference Proceedings

Schier K., Viehmann S., Bau M., Eroglu S. & Beukes N, 2016: Anoxic conditions in ~2.48 Ga old Transvaal shallow marine habitats. Goldschmidt Conference 2016.

Krämer D., Viehmann S., Frei R., Bau M., 2016: The impact of the biogenic siderophore desferrioxamine B on Cr oxidation and fractionation of Cr isotopes. Goldschmidt Conference 2016.

Viehmann S., Bau M., Hoffmann J.E. & Münker C., 2015: Tracing the thermal state of the Archean mantle: Insights from coupled Eu-εNd(t) patterns of BIFs. Goldschmidt Conference 2015.

Viehmann S., Bau M., Münker C., Hoffmann J.E. & Marquez J.E., 2014: The Hf-Nd isotope record of Archean seawater: potential and pitfalls. EGU Conference 2014.

Viehmann S., Hoffmann J.E., Münker C. & Bau M., 2013: Hf-Nd isotope decoupling in Early Precambrian seawater. Goldschmidt Conference 2013.

Viehmann S., Bau M., Smith A.J.B., Beukes N.J., Dantas E.L. & Bühn B., 2013: Spatial heterogeneity of the neodymium isotopic composition of Mesoarchean seawater: Evidence from the Witwatersrand, Pongola and Pietersburg BIFs, South Africa. DMG Jahrestagung 2013.

Viehmann S., Bau M., Hoffmann J.E. & Münker C., 2012: A mixed hydrothermal and riverine origin of REY in Late Archean Krivoy Rog BIFs, Ukraine. Geologische Vereinigung Jahrestagung 2012.

Viehmann S., Hoffmann J.E., Münker C., Alexander B. & Bau M., 2011: Seawater-derived REY and HFSE systematics in Archean BIFs. Goldschmidt Conference 2011.

Viehmann S., Hoffmann J.E., Münker C., Alexander B. & Bau M., 2010: Seawater derived REE+Y and HFSE systematics of Archean Banded Iron Formations (BIFs). DMG Jahrestagung 2010.
 


Department for Geodynamics and Sedimentology
University of Vienna

Althanstrasse 14
A-1090 Vienna

T: +43-1-4277-534 01
F: +43-1-4277-95 34
University of Vienna | Universitätsring 1 | 1010 Vienna | T +43-1-4277-0