Hans Axel ("Hansa") has a Ph.D. in Geology from the
University of Cologne where he studied the large-scale lignite pits of western Germany.
He was granted the "Paul-Woldstedt-Award of Deutsche Quartärvereinigung" for his research
on the so-called "Wanderblock-Formation"s in Switzerland. His recent work uses
geochemistry, paleomagnetics, magnetomineralogy, clay mineralogy, and sediment
petrography in studies of fluvial sedimentology, Quaternary stratigraphy, and climate
change. Since 2001 he has applied his expertise as a consultant for the petroleum industry,
international geological surveys, and as an invited lecturer at the University of Cologne.
He was a Senior Geologist at Integrated Exploration Systems GmbH (IES) for more than two
years where he conducted training courses and completed basin modeling projects in
worldwide study areas covering five different continents. Hansa specializes in geochemical
aspects of petroleum systems modeling (PSM), statistical risk assessment, and advanced
applications of BPSM, such as 3D salt restoration and stacked petroleum systems.
Kemna, H.A., Kornpihl, K., Majewska-Bell, M., Borracini, F. and Mahon, K. (2008): Structural Restoration and Petroleum
Systems Modeling of the Wyoming-Utah Thrust Belt. - poster presented at the AAPG Annual
Convention, San Antonio, Texas, April 20-23, 2008.
Kemna, H.A. (2005): Pliocene and Lower Pleistocene Stratigraphy in the Lower Rhine
Embayment, Germany. - Kölner Forum, 14, 1-127.
Kemna, H.A. (2007): Pliocene and Lower Pleistocene fluvial history of the Lower Rhine Embayment,
Germany: Examples of the tectonic forcing of river courses. - Quat. Int., doi:10.1016/j.quaint.2007.08.038.
Kemna, H.A. (2008): A Revised Stratigraphy for the Pliocene and Lower Pleistocene Deposits
of the Lower Rhine Embayment. - Netherl. Journ. Geosci. / Geol. Mijnb., 87-1, 91-105.
Kemna, H.A. & Becker-Haumann, R. (2003): Die Wanderblock-Bildungen im Schweizer Juragebirge
südlich von Basel: Neue Daten zu einem alten Problem - Ecl. Geol. Helv., 96, 71-83.
Kemna, H.A. & Kaspar, H.U. (in press): Trace element geochemistry of Pliocene and Pleistocene
fine grained sediments in the Lower Rhine Embayment: a provenance study. - N. Jb. Geol. Pal.
Kemna, H.A. & Westerhoff, W.E. (2007): Remarks on the palynology-based chronostratigraphical
subdivision of Pliocene terrestrial deposits in NW-Europe. - Quat. Int., 164-165, 184-196.
Urbat, M., Ellermann, S., Höcker, M. & Kemna, H.A. (in prep.): A rock- and environmental-magnetic
study of the Pliocene Reuver Clay and the overlying Hambach Formation at the open-cast mine Hambach,
Lower Rhine Embayment. - Earth and Planetary Science Letters.
Westerhoff, W.E. (2004): Upper Pliocene and Lower Pleistocene Rhine-Meuse deposits in the
Tegelen-Reuver type area. With contributions of H.A. Kemna - DEUQUA 2004, Excursion Guide, 79-130.
Westerhoff, W.E., Kemna, H.A. & Boenigk, W. (2008): Confluence of Rhine, Meuse, and Belgian Rivers:
A Lithostratigraphic Framework for the Late Pliocene and Early Pleistocene Fluvial History of the
Northern Lower Rhine Embayment. - Netherl. Journ. Geosci. / Geol. Mijnb., 87-1.s