Project groups

6-2.11 | STABLE ISOTOPE PALEOCLIMATE RECONSTRUCTIONS

Stable isotope-based paleoclimate reconstructions are a key element of modern Earth Sciences. Oxygen isotope variations in marine sediments or ice cores are an integral part in the reconstruction of global element cycles and paleoenvironmental dynamics. In contrast, our understanding of long-term terrestrial climate and atmospheric dynamics and their feedbacks with vegetation patterns, silicate weathering and CO2 drawdown or regional hydrology is still limited, partly because of the lack of continuous isotope records from geologic paleoclimate archives. Project 3.7 provides the analytical and experimental support for hydrogen, oxygen and carbon isotope measurements from terrestrial proxy materials for BiK-F with a particular emphasis on the development new hydrogen isotope proxy materials (e.g. hydrated volcanic glass, silicate minerals in the Earth’s crust) and the development of new isotope-based paleothermometers such as „clumped isotope“ Δ47-thermometry. The scientific focus here is on reconstructions of precipitation patterns, changes in atmospheric circulation and evapo-transpiration patterns in savannah and forest systems.

 

Team

Dr. Aude Gébelin, Researcher
Dr. Maud Meijers, Researcher
Dr. Katharina Methner, Researcher
Dr. Iuliana Vasiliev, Researcher
Dr. Tina Lüdecke, Research assistent
Niklas Löffler, Ph.D. student
Fabian Schemmel, Ph.D. student
Ulrich Treffert, Technician

Publications

Ballato, P., Mulch, A., Landgraf A., Strecker M.R., Dalconi M.C., Friedrich A. & S.H. Tabatabaei (2010) : Middle to late Miocene Middle Eastern climate from stable oxygen and carbon isotope data, southern Alborz mountains, N Iran (2010). - Earth and Planetary Science Letters, 300, 125-138.
Link to Publication

Bernasconi, S.M., Hu, B., Wacker, U., Fiebig, J., Breitenbach, S.F.M. & T. Rutz (2013) : Background effects on Faraday collectors in gas-source mass spectrometry and implications for clumped isotope measurements. - Rapid Communications in Mass Spectrometry 27: 603-612.

Campani, M., Mulch, A., Kempf, O., Schlunegger, F. & N. Mancktelow (2012) : Miocene paleotopography of the Central Alps. - Earth and Planetary Science Letters 337-338: 174–185.

Chamberlain, C.P., Mix, H.T., Mulch, A., Hren, M.T., Kent-Corson, M.L., Davis, S.J., Horton, T.W. & S.A. Graham (2012) : The Cenozoic Climatic and Topographic Evolution of the Western North American Cordillera. -  American Journal of Science, DOI 10.2475/04.2011.00.

Gottardi, R., Teyssier, C., Mulch, A., Vennemann, T. W. & M. L. Wells (2011) : Preservation of an extreme geotherm in the Raft River detachment shear zone. - Geology 39: 759-762.

Königer,P., Marshall, J.D., Link, T. & A. Mulch (2011) : An inexpensive, fast, and reliable method for vacuum extraction of soil and plant water for stable isotope analyses by mass spectrometry. - Rapid Communications in Mass Spectrometry 25: 3041-3048.

Lüdecke, T. & H. Thiemeyer (2013) : Palaeoenvironmental Characteristics of the Plio-Pleistocene Chiwondo and Chitimwe Beds (N-Malawi). - In: Runge, J. Palaeoecology of Africa Vol. 32, 143-161. An International Yearbook of Landscape Evolution and Palaeoenvironments

Mix, H., Mulch, A., Kent-Corson, M.L. & C.P. Chamberlain (2011) : Cenozoic migration of topography in the North American Cordillera (2011). - Geology 89, 87-90, doi:10.1130/G31450.1
Link to Publication

Schemmel, F., Niedermeyer, E.M., Schwab, V.F., Gleixner, G., Pross, J. & A. Mulch (2016). : Plant wax δD values record changing Eastern Mediterranean atmospheric circulation patterns during the 8.2 kyr BP climatic event. - Quarternary Science Reviews 133: 96-107.

Stärz, M., Lohmann, G. & G. Knorr (2013) : Dynamic soil feedbacks on the climate of the mid-Holocene and the Last Glacial Maximum. - Climate of the Past Discussions 9: 2717-2770.

Wacker, U., Fiebig, J. & B.R. Schoene (2013) : Clumped isotope analysis of carbonates: comparison of two different acid digestion techniques. - Rapid Communications in Mass Spectrometry 27: 1631-1642.