Markus Patzek

Dr. Markus Patzek

Uni Münster - Planetology



Understanding the origin of the highly volatile component in planetary bodies is of fundamental importance in order to decipher key processes in terrestrial planet formation, such as where Earth’s water came from. The source of these volatiles is either in the building blocks of the planets or in the material that was added onto the Earth during late accretion. Volatile-rich materials may have been scattered into the solar system as a consequence of giant planet migration, during which volatile-rich objects were transported inward from
beyond the snow line where water ice was stable.

Today, we can find volatile-rich material as xenolithic fragments in various types of meteorites providing us with the possibly to decipher their chemical and isotopic characteristics without the effect of billion of years of geologic processes.

We study major, minor and trace elements of these xenolithic, volatile-rich clasts using various techniques including scanning electron microscopy, electron microprobe analysis and Laser Ablation ICP MS. In-situ determination of various isotope system (e.g. H, O and S) are done by using secondary ion mass spectrometry (SIMS and nanoSIMS; cooperation with Heidelberg, nordSIM Stockholm and MPI Mainz). Bulk isotope determination (O, N and noble gases; cooperation with University of Göttingen, CRPG Nancy) will also be determined by various mass spectrometic techniques. By combining all findings we will be able to shed light on the origin of these clasts and their genetic link to other volatile-rich material. Finally, we may be able to evaluate the importance of this material with regard to its impact on the volatile inventory of todays Earth. 

Characteristics of volatile-rich clasts (CI-like)DH vs SiHd17O vs d18OD17O vs e54Cr


Alfing, J., Patzek, M., Bischoff, A., 2019: Modal abundances of coarse-grained (>5 µm) components within CI-chondrites and their individual clasts – Mixing of various lithologies on the CI parent body(ies). Geochemistry. 10.1016/j.chemer.2019.08.004

Bischoff, A., Barrat, J.-A., Berndt, J., Borovicka, J., Burkhardt, C., Busemann, H., Hakenmüller, J., Heinlein, D., Hertzog, J., Kaiser, J., Maden, C., Meier, M. M. M., Morino, P., Pack, A., Patzek, M., Reitze, M. P., Rüfenacht, M., Schmitt-Kopplin, P., Schönbächler, M., Spurny, P., Weber, I., Wimmer, K., Zikmund, T., 2019: The Renchen L5-6 chondrite breccia – The first confirmed meteorite fall from Baden-Württemberg (Germany). Geochemistry.

Kerraouch, I., Ebert, S., Patzek, M., Bischoff, A., Zolensky, M. E., Pack, A., Schmitt-Kopplin, P., Belhai, D., Bendaoud, A., Le, L., 2019: A light, chondritic xenolith in the Murchison (CM) chondrite – Formation by fluid-assisted percolation during metasomatism? Geochemistry. 10.1016/j.chemer.2019.06.002

Visser, R., John, T., Patzek, M., Bischoff, A., Whitehouse, M. J., 2019: Sulfur isotope study of sulfides in CI, CM, C2ung chondrites and volatile-rich clasts – Evidence for different generations and reservoirs of sulfide formation. Geochimica et Cosmochimica Acta, Vol. 261, pp. 210-223. 10.1016/j.gca.2019.06.046

Haack, H., Sørensen, A. N., Bischoff, A., Patzek, M., Barrat, J.-A., Midtskoge, S., Stempels, E., Laubenstein, M., Greenwood, R., Schmitt-Kopplin, P., Busemann, H., Maden, C., Bauer, K., Morino, P., Schönbächler, M., Voss, P., Dahl-Jensen, T., 2019: Ejby - A new H5/6 ordinary chondrite fall in Copenhagen, Denmark. Meteoritics and Planetary Science, Vol. 54, pp. 1853-1869. 10.1111/maps.13344


Bischoff, A., Schleiting, M., Patzek, M., 2018: Shock stage distribution of 2280 ordinary chondrites – Can bulk chondrites with a shock stage of S6 exist as individual rocks? Meteoritics and Planetary Science. 10.1111/maps.13208

Visser, R., John, T., Menneken, M., Patzek, M., Bischoff, A., 2018: Temperature constraints by Raman spectroscopy of organic matter in volatile-rich clasts and carbonaceous chondrites. Geochimica et Cosmochimica Acta, Vol. 241, pp. 38-55. 10.1016/j.gca.2018.08.037

Bischoff, A., Schleiting, M., Wieler, R., Patzek, M., 2018: Brecciation among 2280 ordinary chondrites – Constraints on the evolution of their parent bodies. Geochimica et Cosmochimica Acta, Vol. 238, pp. 516-541. 10.1016/j.gca.2018.07.020

Patzek M., Visser R., Bischoff A., John T. (2018): Mineralogy of volatile-rich clasts in brecciated meteorites. Meteoritics & Planetary Science, Vol. 53, pp. 2519-2540. 10.1111/maps.13175


Morlok, A., Bischoff, A., Patzek, M., Sohn, M., Hiesinger, H., 2017: Chelyabinsk - a rock with many different (stony) faces: An infrared study. Icarus, Vol. 284, pp. 431-442. 10.1016/j.icarus.2016.11.030

List of publications can be found on WWU Webpage.