Staff Directory

Prof Frederick Roelofse
Position
Associate Professor
Department
Geology
Address
G
Geology
IB 52
UFS
Telephone
051 401 9001
Office
Geology 302
Information

Short CV


Publications

Books / chapters in books

  1. Roelofse, F. (2012) Mineralogical, geochemical and isotopic constraints on the evolution of the lower Main Zone and Platreef on the Northern Limb of the Bushveld Complex. Bulletin 141, Council for Geoscience, Pretoria (ISBN 978-1-920226-43-5)

Contributions to peer-reviewed journals

  1. Maier, WD., Roelofse, F., Barnes, S.-J. (2003) The concentration of the platinum-group elements  in South African komatiites: implications for mantle sources, melting regime and PGE fractionation during crystallization. Journal of Petrology 44 (10) 1787-1804.
  2. Roelofse, F., Horstmann, U.E. (2008) A case study on the application of isotope ratio mass spectrometry (IRMS) in determining the provenance of a rock used in an alleged nickel switching incident. Forensic Science International 174 63-66.
  3. Roelofse, F. (2007) An exploratory study into the multi-dimensional nature of quality in analytical laboratories – managerial implications. Quality Management Journal 14(3) 7-14.
  4. Roelofse, F., Ashwal, LD. (2008) Symplectitic augite from the Platreef – textural evidence for fluid/rock interaction in the Northern Sector of the Northern Limb of the Bushveld Complex? South African Journal of Geology 111 21-26.
  5. Roelofse, F., Ashwal, LD., Pineda-Vargas, CA., Przybylowicz, WJ. (2009) Enigmatic textures developed along plagioclase-augite grain boundaries at the base of the Main Zone, Northern Limb, Bushveld Complex – evidence for late stage melt infiltration into a nearly solidified crystal mush. South African Journal of Geology 112 39-46.
  6. Roelofse, T., Roelofse, F. (2011) On the occurrence of loughlinite (Na-sepiolite) in pans of the Northern Cape Province, South Africa. South African Journal of Geology 114 201-206
  7. Roelofse, F., Ashwal, L.D. (2012) The lower Main Zone in the Northern Limb of the Bushveld Complex – A >1.3 km thick sequence of intruded and variably contaminated crystal mushes. Journal of Petrology 53: 1449-1476
  8. Zintwana, M.P., Cawthorn, R.G., Ashwal, L.D., Roelofse, F., Cronwright, H. (2012) Mercury in the Bushveld Complex, South Africa, and the Skaergaard Intrusion, Greenland. Chemical Geology 320-321: 147-155
  9. Roelofse, F, Saunders, I (2013) A first report on meteor generated seismic signals as detected by the SANSN. South African Journal of Science 109(5/6) Art#0022, 6 pages
  10. Lehloenya, PB, Roelofse, F (2013) Mercury distribution amongst co-existing silicates within the Bushveld Complex. Chemie der Erde (Geochemistry) 73: 261-266
  11. Roelofse, F (2013) Comments on the paper "Mineralogical and Geochemical analyses of the healing elements in clayey soils from Isinuka traditional spa, Port St Johns, South Africa". Transactions of the Royal Society of South Africa 68(3): 175-176
  12. Tredoux, M, Roelofse, F, Shukolyukov, A (2014) A Cr isotopic study of the Bon Accord NiO body in the Barberton greenstone belt, South Africa. Chemical Geology 390:182-190
  13. Roelofse, F, Mulder, K (2015) Die invloed van verpoeiering op die kwikinhoud van verskeie gesertifiseerde verwysingsmateriale. Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie 34(1) Art #1290, 4 pages
  14. Roelofse, F, Ashwal, LD, Romer, RL (2015) Multiple, isotopically heterogeneous plagioclase populations in the Bushveld Complex suggest mush intrusion. Chemie der Erde (Geochemistry) 75: 357-364
  15. Mangwegape, M., Roelofse, F., Mock, T., Carlson, R.W. (2016) The Sr-isotopic stratigraphy of the Northern Limb of the Bushveld Complex, South Africa. Journal of African Earth Sciences 113: 95-100
  16. Kovaleva, E, Huber, MS, Roelofse, F, Tredoux, M, Praekelt, HE (2018) Pseudotachylite vein hosted by a clast in the Vredefort Granophyre: characterization, origin and relevance. South African Journal of Geology 121: 9-26
  17. Magson, J, Tredoux, M, Roelofse, F (2018) Association of platinum-group elements with chromitite within the Merensky Reef, Western Bushveld Complex: Results of a high resolution mineralogical and geochemical study. Journal of African Earth Sciences 144: 161-175
  18. Kovaleva, E., Huber, M.S., Roelofse, F., Tredoux, M., Praekelt, H. (in press) Reply to the comment made by W.U. Reimold on “Pseudotachylite vein hosted by a clast in the Vredefort granophyre: characterization, origin and relevance” by E. Kovaleva et al., South African Journal of Geology, 2018, 121, 51-68. doi:10.25131/sajg.121.0002. South African Journal of Geology

Publications (Short List)


Research

My current research is aimed at quantifying the extent of isotopic and trace element disequilibrium within the Bushveld Complex and also at what the presence of disequilibrium features within the Bushveld Complex (and other layered intrusions) can tell us about a variety of processes operational in large magma chambers (e.g. magma chamber dynamics, interaction between mantle-derived magmas and the crust into which they are emplaced, the origin of layering and the construction of large layered intrusions in general).

Post-graduate students with excellent academic records are encouraged to contact me should they want to become involved in my research endeavors.

For more information, please see my Google Scholar and ResearchGate profiles:

Google Scholar

ResearchGate

Area(s) of Interest

  • Trace element and isotopic disequilibrium in the Bushveld Complex
  • Textural studies in large layered complexes
  • The geochemical behaviour of mercury (Hg) in magmatic systems
  • Palaeobarometry using vesicular lava flows
  • Forensic geology

Courses Presented

  • Igneous Petrology 3714
  • Advanced Igneous Petrology 6853
  • Skills Development and Ethics for Geoscience Professionals 6801

Community Service

Chair: Palaeoproterozoic Task Group (South African Committee for Stratigraphy)

Member of the Editorial Board: Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie; South African Journal of Geology

Regional Member of Council: Geological Society of South Africa

Service Learning


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