Multiple Merensky Reef of the Bushveld Complex, South Africa

2019 ◽  
Vol 174 (3) ◽  
Author(s):  
Sofya Chistyakova ◽  
Rais Latypov ◽  
Kirsten Youlton
Keyword(s):  
South Africa ◽  
Bushveld Complex ◽  
Merensky Reef

scholarly journals Contamination of the Bushveld Complex (South Africa) magmas by basinal brines: Stable isotopes in phlogopite from the UG2 chromitite

Geology ◽  
2021 ◽  
Author(s):  
Haoyang Zhou ◽  
Robert B. Trumbull ◽  
Ilya V. Veksler ◽  
Ilya N. Bindeman ◽  
Johannes Glodny ◽  
...  
Keyword(s):  
South Africa ◽  
Stable Isotopes ◽  
Hydrogen Isotope ◽  
Bushveld Complex ◽  
Isotope Ratios ◽  
Second Step ◽  
Merensky Reef ◽  
Oxygen Isotope Ratios ◽  
Abundant Evidence ◽  
Hydrogen Isotope Ratios

There is abundant evidence for significant H2O in evolved melts from the platinum-rich UG2 chromitite and the Merensky Reef of the Bushveld Complex (South Africa), but there is no consensus about the source of H2O. We report triple-oxygen and hydrogen isotope ratios of interstitial, late-magmatic phlogopite from three localities of the UG2 layer. The phlogopite yielded δD values of –43‰ to –23‰, which is >30‰ higher than previously known from Bushveld rocks and far above the mantle values of ~–75‰. The phlogopite triple-oxygen isotope ratios are the first to be reported for Bushveld rocks, with values of Δ′17O0.5305 (17O excess relative to the reference line 0.5305) from –0.069‰ to –0.044‰ (δ18O 5.2‰–6.2‰). The oxygen data support existing models of as much as 30%–40% contamination of mantlederived magmas in the lower to middle crust. However, the high δ values require a second step of contamination, which we attribute to brines from the marine sediments in the Transvaal Basin at the emplacement level.

Isotope and trace-element patterns below the Merensky Reef, Bushveld Complex, South Africa: evidence for fluids?

1993 ◽  
Vol 106 (1-2) ◽  
pp. 171-186 ◽  
Author(s):  
D.L. Reid ◽  
R.G. Cawthorn ◽  
F.J. Kruger ◽  
M. Tredoux
Keyword(s):  
South Africa ◽  
Trace Element ◽  
Bushveld Complex ◽  
Merensky Reef

scholarly journals An overview of global layered intrusions, with a special focus on the Bushveld Complex, South Africa

2021 ◽  
Author(s):  
W.D. Maier ◽  
◽  
Qun-Ke Xia ◽  
Keyword(s):  
South Africa ◽  
Bushveld Complex ◽  
Ore Deposits ◽  
Reactive Flow ◽  
Special Focus ◽  
Potential Importance ◽  
Layered Intrusions ◽  
Merensky Reef ◽  
Research Questions ◽  
Water Contents

Layered intrusions host some of the world’s most important ore deposits, yet their global distribution, age, and petrogenesis remain poorly known. Here we provide an update on our current understanding and highlight some key outstanding research questions, notably on the potential importance of reactive flow. We present some preliminary data on water contents of Bushveld orthopyroxenes from which we calculated the water contents of the magma. The analysed Bushveld rocks, including the Merensky Reef, crystallised from relatively water-poor magma, similar to many other continental basalts.

scholarly journals Morphology and microstructure of chromite crystals in chromitites from the Merensky Reef (Bushveld Complex, South Africa)

2012 ◽  
Vol 165 (6) ◽  
pp. 1031-1050 ◽  
Author(s):  
Zoja Vukmanovic ◽  
Stephen J. Barnes ◽  
Steven M. Reddy ◽  
Bélinda Godel ◽  
Marco L. Fiorentini
Keyword(s):  
South Africa ◽  
Bushveld Complex ◽  
Merensky Reef
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