Associate Professor Robert Bolhar

Robert graduated in 1997 at the Johannes Gutenberg University in Mainz (Germany) in geology, with a focus on structural geology. In 2002, he was awarded a PhD in geology and geochemistry at the University of Melbourne (Australia), having worked on mafic magmatism and crust formation in the Pilbara and Zimbabwe Cratons. In subsequent years, being employed as postdoctoral fellow at various institutions in Australia and New Zealand, his interest in Precambrian sedimentary rocks as important geochemical archives of ancient environments and crustal evolution intensified. He also extended his activities to include zircon geochronology and geochemistry of granitoid provinces, ranging from Precambrian to Mesozoic in age. Recently, Robert gained significant work experience in the resource industry in various roles (resource and mine geologist, mining consultant and assessor of mining development leases). In 2014, he was appointed as Assoc. Prof. at the University of the Witwatersrand to continue research on Precambrian geology of the Kaapvaal and Zimbabwe Cratons. Other areas of interest include the coupled isotopic and geochronological record of young (<500 ka) carbonates related to intracontinental extension, fluid-flow and climate change, and geochemical fingerprinting of stone artefacts from Polynesia.

[9] Tympel, J. F., Hergt, J. M., Maas, R., Woodhead, J. D., Greig, A. and Bolhar, R. (submitted to Geology) Hadean crust in the Pilbara Craton? Nd-Hf isotopic signatures of 3500 Ma Warrawoona Group Greenstones.
[8] Weisler, M. I., St. Pierre, E. J. Bolhar, R., Zhao, X. J. and Feng, Y. (submitted to Archaeology in Oceania) Geochemical and isotopic fingerprinting of basaltic stone adzes from Polynesia.
[7] McCoy, P. C., Weisler, M. I., St. Pierre, E. J. Bolhar, R. and Feng, Y. (submitted to Archaeology in Oceania) The chronostratigraphy and geochemistry of a basaltic glass source/quarry and two habitation rock shelters from the Mauna Kea Adze Quarry Complex, Hawai‘I.
[6] Bolhar, R., Hofmann, A., Kemp, A. I. S., Whitehouse, M. J. and Wind, S. (submitted to Earth and Planetary Science Letters) A new perspective on the growth and preservation of ancient continental crust in the Zimbabwe Craton using the U-Pb, O and Hf isotopic record of detrital zircon.
[5] Hofmann, A., Kroner, A., Bolhar, R., Xie, H. Reinhardt, J., Horvath, P., Hegner, E. (submitted to Precambrian Research) The Nhlangano Gneiss Dome in south-west Swaziland.
[4] Bolhar, R., Hofmann, A. and Palin, J. M. (submitted to Precambrian Research) Zircon chrono-chemical signatures from the Kaapvaal Craton, South Africa: a record of magmatic crystallization, high-grade metamorphism and compositional alteration.
[3] Unal-Imer, E., Uysal, I. T., Shulmeister, J. Zhao, J. X., Feng, Y., Isik, V and Bolhar, R. (accepted by Geophysical Research Letters) Does climate change trigger seismic activity as recorded in Aegean vein carbonates?
[2] Bolhar, R. and Hofmann, A. (accepted by Geochimica et Cosmochimica Acta) A coupled trace element and Pb isotopic investigation into the provenance and deposition of stromatolitic carbonates, iron stones and associated shales of the ~3.0 Ga Pongola Supergroup, Kaapvaal Craton.
[1] Hofmann, A., Bolhar, R., Orberger, B. and Foucher, F. (2014) Cherts of the Barberton greenstone belt: petrology and trace element geochemistry of 3.5 to 3.3 Ga old silicified volcaniclastic sediments, South African Journal of Geology, 116, 297-322.

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