Jennifer ZWICKER

jennifer.zwicker@univie.ac.at

Room Number: 2B479
Tel.: +43-1-4277-53443

Jennifer Zwicker


Research Interests:

  • Authigenic minerals
  • Sediment geochemistry
  • Geomicrobiology
  • Onshore serpentinization


Current Project:

The geobiology of an onshore serpentinite-hosted ecosystem

Serpentinites are rocks mainly composed of serpentine group minerals, which are produced by hydrothermal alteration of olivine-rich, ultra-mafic rocks exposed primarily on mid oceanic ridges.
Seafloor serpentinite-hosted hydrothermal systems are unique habitats due to the fact that hydrogen and methane produced by serpentinization reactions can be utilized by microorganisms to gain metabolic energy.
The abundance of chemical energy makes serpentinites a strong candidate site for the origin of life on Earth, as well as a prime target in the search for extraterrestrial life.
Serpentinization reactions produce carbonate minerals, sequestering carbon dioxide. These so-called carbonation reactions occur where peridotites are altered in the subseafloor as well as on land. Despite considerable effort, the processes governing methane formation and carbonate precipitation associated with serpentinization are still not sufficiently understood. The role of microbial methanogenesis and possibly methanotrophy in the cycling of carbon and mineral authigenesis is even less well constrained.
My study investigates serpentinization and serpentinite-hosted carbonates. The goals of my project are to characterize the chemosynthesis-based microbial communities, to assess their role in carbonate precipitation, and to constrain the relative contribution of microbial methanogenesis to methane production.


 Publications (taken from u:cris)


Showing entries 0 - 10 out of 10

2019


Geochemistry and mineralogy of serpentinization-driven hyperalkaline springs in the Ronda peridotites. / Giampouras, Manolis; Garrido, Carlos ; Zwicker, Jennifer; Vadillo, Inaki; Smrzka, Daniel; Bach, Wolfgang; Peckmann, Jörn; Jiminez, Pablo; Benavente, José; Garcia-Ruiz, Juan Manuel.

In: Lithos, 16.10.2019.

Research output: Contribution to journalArticle


Oil seepage and carbonate formation: A case study from the southern Gulf of Mexico. / Smrzka, Daniel; Zwicker, Jennifer; Misch, David; Walkner, Christoph; Gier, Susanne; Monien, Patrick; Bohrmann, Gerhard; Peckmann, Jörn (Corresponding author).

In: Sedimentology, 23.02.2019.

Research output: Contribution to journalArticle


2018


Rare earth elements as tracers for microbial activity and early diagenesis : A new perspective from carbonate cements of ancient methane-seep deposits. / Zwicker, J.; Smrzka, D.; Himmler, T.; Monien, P.; Gier, S.; Goedert, J. L.; Peckmann, J.

In: Chemical Geology, Vol. 501, 30.11.2018, p. 77-85.

Research output: Contribution to journalArticle


Evidence for archaeal methanogenesis within veins at the onshore serpentinite-hosted Chimaera seeps, Turkey. / Zwicker, Jennifer; Birgel, Daniel; Bach, Wolfgang; Richoz, Sylvain; Smrzka, Daniel; Grasemann, Bernhard; Gier, Susanne; Schleper, Christa; Rittmann, Simon Karl-Maria Rasso; Kosun, Erdal; Peckmann, Jörn (Corresponding author).

In: Chemical Geology, Vol. 483, 18.03.2018, p. 567-580.

Research output: Contribution to journalArticle


Biological methane production under putative Enceladus-like conditions. / Taubner, Ruth-Sophie; Pappenreiter, Patricia; Zwicker, Jennifer; Smrzka, Daniel; Pruckner, Christian; Kolar, Philipp; Bernacchi, Sébastien; Seifert, Arne H; Krajete, Alexander; Bach, Wolfgang; Peckmann, Jörn; Paulik, Christian; Firneis, Maria G; Schleper, Christa; Rittmann, Simon K-M R.

In: Nature Communications, Vol. 9, 748 , 27.02.2018.

Research output: Contribution to journalArticle


Stromatolites below the photic zone in the northern Arabian Sea formed by calcifying chemotrophic microbial mats. / Himmler, Tobias; Smrzka, Daniel; Zwicker, Jennifer; Kasten, Sabine; Shapiro, Russell; Bohrmann, Gerhard; Peckmann, Jörn Ludwig.

In: Geology, 15.02.2018.

Research output: Contribution to journalArticle


2017


Methane seepage in a Cretaceous greenhouse world recorded by an unusual carbonate deposit from the Tarfaya Basin, Morocco. / Smrzka, Daniel; Zwicker, Jennifer; Kolonic, Sadat; Birgel, Daniel; Little, Crispin T.S.; Marzouk, Akmal; Chellai, El Hassane; Wagner, Thomas; Peckmann, Jörn Ludwig.

In: The Depositional Record, 17.03.2017.

Research output: Contribution to journalArticle


2016


Establishing criteria to distinguish oil-seep from methane-seep carbonates. / Smrzka, Daniel; Zwicker, Jennifer; Klügel, Andreas; Monien, Patrick; Bach, Wolfgang; Bohrmann, Gerhard; Peckmann, Jörn Ludwig.

In: Geology, Vol. 44, No. 8, 12.07.2016, p. 667-670.

Research output: Contribution to journalArticle


2015


Mineralized conduits are part of the uppermost plumbing system of Oligocene methane-seep deposits, Washington State (USA). / Zwicker, Jennifer; Smrzka, Daniel; Gier, Susanne; Goedert, James L.; Peckmann, Jörn Ludwig.

In: Marine and Petroleum Geology, Vol. 66, No. 3, 05.08.2015, p. 616-630.

Research output: Contribution to journalArticle


Constraining silica diagenesis in methane-seep deposits. / Smrzka, Daniel; Krämer, Stephan; Zwicker, Jennifer; Birgel-Rennebeck, Daniel; Fischer, Doreen; Goedert, James L.; Peckmann, Jörn Ludwig.

In: Palaeogeography, Palaeoclimatology, Palaeoecology, 2015, p. 13-26.

Research output: Contribution to journalArticle


Showing entries 0 - 10 out of 10