Prof JD Kramers
Prof JD Kramers
Faculty of Science
Department of Geology
Temporary Research Professor
 
Biography and Research Interests

Jan Kramers is a geochemist and isotope geologist. He completed his PhD at the Univesity of Bern, Switzerland, in 1973 and worked as a postdoc at the BPI Geophysics of the University of the Witwatersrand, and the University of Leeds, UK. From 1981 to 1991 he taught at the University of Zimbabwe, and from 1991 to 2009 he was professor of Geochemistry at the Institute of Geological Sciences, University of Bern, and headed its isotope geology group. He has supervised and co-supervised over 30 completed PhD projects and 20 MsC projects.

He is author or co-author of 110 publications in international journals, which have been cited over 4600 times in total. His research has included work on kimberlites and the subcontinental mantle, Archean geology (in particular the metamorphic geochronology of the Southern African Limpopo Belt) and the history of the continental crust through time, Earth accretion and core formation, the history of the Earth’s early atmosphere and the question of when it became oxidizing, Palaeoclimatology, and the geochronology of South African hominin fossil sites. All of these remain his current research interests. He joined the Geology Department at UJ in August 2009.

Selected Publications

Pickering, R., and Kramers, J.D., 2010. Re-appraisal of the stratigraphy and determinations of new U-Pb dates for the Sterkfontein hominin site, South Africa. Journal of Human Evolution. 59, 70-86.

Dirks, P.H.G.M.,  Kibii, J.M.,  Kuhn, B.F.,  Steininger,C., Churchill, S.E., Kramers, J. D.,   Pickering, R., Farber,  D.L., Mériaux, A.-S., Herries, A.I.R., King, G.C.P., Berger, L.R., 2010. Geological Setting and Age of Australopithecus sediba from Southern Africa. Science, 328, 205-208.

Churchill, S.E., Kramers, J. D.,  Pickering, R., Farber,  D.L., Mériaux, A.-S., Herries, A.I.R., King, G.C.P., Berger, L.R., 2010. Geological Setting and Age of Australopithecus sediba from Southern Africa. Science, 328, 205-208.

 de Ruiter, D.J., Pickering, R., Steininger, C.M., Kramers, J.D., Hancox, P.J., Churchill, S.E., Lee R. Berger, L.R. and Backwell, L., 2009. New Australopithecus robustus fossils and associated U-Pb dates from Cooper's Cave (Gauteng, South Africa). Journal of Human Evolution. 56, Pages 497-513.

 Fleitmann, D. Cheng, H., Badertscher, S., Edwards, R. L.  Mudelsee, M., Göktürk, O. M. Fankhauser, A., Pickering, R., Raible, C. C., Matter, A., Kramers, J. and Tüysüz, O., 2009. Timing and climatic impact of Greenland interstadials recorded in stalagmites from northern Turkey. Geophysical Research Letters, 36, L19707, doi:10.1029/2009GL040050

 Kramers, J.D., Frei, R., Newville, M., Kober, B. and Villa, I.M., 2009. On the valency state of radiogenic lead in zircon and its consequences. Chemical Geology, 261, 3-10.

 Wille, M., Nägler, Th.F., Lehmann, B., Schröder, S. and Kramers, J.D., 2008. Hydrogen sulphide release to surface waters at the Precambrian/Cambrian boundary. Nature, 453, 767-769

 Kramers, J.D., 2007. Hierarchical Earth accretion and the Hadean Eon (Invited bicentennial review). Journal of the Geological Society of London, 164, 3-17.

 Wille, M., Kramers, J.J., Naegler, T.F., Voegelin, A.R., Beukes, N.J., Schröder, S., Lacassie, J.P. and Meisel, Th., 2007. Evidence for a gradual rise of oxygen between 2.6 and 2.5 Ga from Mo isotopes and Re-PGE signatures in shales. Geochimica et Cosmochimica Acta, 71, 2417-2435.

 Kramers, J.D., van Reenen, D.D. and McCourt, S., 2006. The Limpopo Belt. In: Johnson, M.R., Anhaeusser, C. and Thomas, R.J. (eds.) The geology of South Africa. Geological Society of South Africa, Johannesburg, and Council  for Geoscience, Pretoria, South Africa, pp 209-236.

 Siebert, C., Kramers, J.D., Meisel, Th., Morel, Ph. & Th., Nägler , Th. F.,  2005. PGE, Re-Os and Mo isotope systematics in Archean and early Proterozoic sedimentary systems as proxies for redox conditions of the early Earth. Geochim. Cosmochim. Acta. 69, 1787-1801

 Kleinhanns I.C., Kramers J.D., and Kamber B.S. , 2003. Importance of water for Archean granitoid petrology: a comparative study of TTG and potassic granitoids from Barberton Mountain Land, South Africa. Contributions to Min. and Pet., 145: 377-389.

 Holzer, L., Frei, R., Barton, J.M., and Kramers, J.D.,  1998. Unraveling the record of successive high grade events in the Central Zone of the Limpopo Belt using Pb single phase dating of metamorphic minerals. Precambrian Research, 87:  87-115.

 Kramers, J.D. and Tolstikhin, I.N., 1997.  Two major terrestrial Pb isotope paradoxes, forward transport modelling, core formation and the history of the continental crust.  Chem. Geol., 139:  75 - 110.

 Kamber, B.S., Kramers, J.D., Napier, R., Cliff, R.A. and Rollinson, H.R., 1995. The Triangle Shearzone, Zimbabwe, revisited: new data document an important event at 2.0 Ga in the Limpopo Belt. Prec. Res., 70, 191-213.

 Kramers, J.D. (1979), Lead, uranium, strontium, potassium and rubidium in inclusion-bearing diamonds and mantle derived xenoliths from Southern Africa. Earth Planet. Sci. Lett. 42, 58-70.

 Kramers, J.D. (1977), Lead and strontium isotopes in cretaceous kimberlites and mantle derived xenoliths from Southern Africa. Earth Planet. Sci. Lett. 34, 419-431.

 Stacey J.S. and Kramers, J.D. (1975), Approximation of terrestrial lead isotope evolution by a two-stage model. Earth Planet. Sci. Lett. 26, 207-221.

 ostal Address

Department of Geology
University of Johannesburg
PO  Box 524
Auckland Park 2006
Kingsway & University (APK campus)
Johannesburg
South Africa

Contact Details

Tel:  +27  (0) 11 559 4755
Fax:  +27 (0) 11 559 4702
Auckland Park Kingsway Campus:C1 Lab 421
Email

 

     
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