首页|Regional structures in Lower and Middle Group chromitites of the Bushveld Complex, South Africa
Regional structures in Lower and Middle Group chromitites of the Bushveld Complex, South Africa
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The Bushveld Complex is an economically important and scientifically fascinating intrusion due to the thick chromitite layers contained in its Critical Zone (Figure 1). These laterally extensive chromitite layers are mined for chromium and, for some layers, platinum-group elements. They are subdivided into Lower Group, Middle Group and Upper Group chromitites (LG, MG and UG respectively) of which the LG and MG chromitites were analysed in this study. Field observations from open pit and underground exposures in the eastern and western Lobes of the Bushveld Complex were used to describe the chromitite morphology on a regional scale. The studied chromitite layers are traceable over long distances and may occur as one, two or three chromitite layers at distinct locations, with several changes in the number of their layers and their thickness occurring along a distance of a few kilometres. This is best understood as a structure of regionally bifurcating chromitites with small-scale bifurcations being visible even at the scale of individual outcrops.
Maximilian Hasch、Rais Latypov
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School of Geosciences, University of the Witwatersrand, 2000 Johannesburg, South Africa
2022
Transactions of the Institutions of Mining and Metallurgy
NSTL
