Lead isotopic disequilibrium between sulfide and plagioclase in the Bushveld Complex and the chemical evolution of large layered intrusions

Geochimica et Cosmochimica Acta

Volumn 67, Issue 10, 2003, Pages 1875-1888

  Mathez, E A ^a   Waight, T E ^b  

^a DIVISION OF INVERTEBRATE ZOOLOGY   (United States)

^b DANISH LITHOSPHERE CENTRE   (Denmark)

Author keywords

[No Author keywords available]

Indexed keywords

DISEQUILIBRIUM; IGNEOUS GEOCHEMISTRY; ISOTOPIC RATIO; LAYERED INTRUSION; LEAD ISOTOPE; PLAGIOCLASE;

SOUTH AFRICA;

EID: 0037533949     PISSN: 00167037     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0016-7037(02)01294-2     Document Type: Article

References (29)

1. Baker J. A. (1996) Stratigraphy, geochronology and geochemistry of Cenozoic volcanism in western Yemen. Ph.D. Thesis, Univ. London, 386p
2. Bell, R. T. (1978). Uranium in black shales. In M. M. Kimberley (Ed.), Uranium Deposits, Their Mineralogy and Origin, 307-329. : Mineral. Assoc. Canada Short Course.
3. Buick, I. S., Maas, R., & Gibson, R. (2001). Precise U-Pb titanite age constraints on the emplacement of the Bushveld Complex, South Africa. J. Geol. Soc. London, 158 3-6.
4. Cawthorn, R. G., & Walraven, F. (1998). Emplacement and crystallization time for the Bushveld Complex. J. Petrol, 39 1669-1687.
5. Cherniak, D. J. (1995). Diffusion of lead in plagioclase and K-feldspar: an investigation using Rutherford backscatter and resonant nuclear reaction analysis. Contrib. Mineral. Petrol, 120 358-371.
6. Frei, R., Rosing, M. T., Waight, T. E., & Ulfbeck, D. G. (2002). Hydrothermal-metasomatic and tectono-metamorphic processes in the Isua supracrustal belt (West Greenland): a multi-isotopic investigation of their effects on the Earth's oldest oceanic crustal sequence. Geochim. Cosmochim. Acta, 66 467-486.
7. Hamilton, J. (1977). Isotope and trace element studies of the Great Dike and Bushveld mafic phase. J. Petrol, 18 24-52.
8. Harmer, R. E., Auret, J. M., & Eglington, B. M. (1995). Lead isotope variations within the Bushveld Complex, Southern Africa: a reconnaissance study. J. Afr. Earth Sci, 21 595-606.
9. Hart, S. R., & Kinloch, E. D. (1989). Osmium isotope systematics in Witwatersrand and Bushveld ore deposits. Econ. Geol, 84 1651-1655.
10. 86Sr ratios in the Merensky cyclic unit of the Bushveld Complex. Nature, 298 53-55.
11. Kruger, F. J. (1994). The Sr-isotope stratigraphy of the western Bushveld Complex. S. Afr. J. Geol, 97 393-398.
12. Lee, C. A., & Butcher, A. R. (1990). Cyclicity in the Sr isotope stratigraphy through the Merensky and Bastard reef units, Atok section, eastern Bushveld Complex. Econ. Geol, 85 877-883.
13. Mathez, E. A., Agrinier, P., & Hutchinson, R. (1994). Hydrogen isotope composition of the Merensky reef and related rocks, Atok section, Bushveld Complex. Econ. Geol, 89 791-802.
14. Mathez, E. A., Hunter, R. H., & Kinzler, R. (1997). Petrologic evolution of partially molten cumulate: the Atok section of the Bushveld Complex. Contrib. Mineral. Petrol, 129 20-34.
15. Mathez, E. A., & Marcantonio, F. (1995). Sr isotopes and magma mixing in the Bushveld Complex. EOS, 76 F641.
16. McCallum, I. S., Thurber, M. W., O'Brien, H. E., & Nelson, B. K. (1999). Lead isotopes in sulfides from the Stillwater Complex, Montana: evidence for subsolidus remobilization. Contrib. Mineral. Petrol, 137 206-219.
17. McCandless, T. E., & Ruiz, J. (1991). Osmium isotopes and crustal sources for platinum-group mineralization in the Bushveld Complex, South Africa. Geol, 19 1225-1228.
18. McCandless, T. E., Ruiz, J., Adair, B. I., & Freydier, C. (1999). Re-Os isotope and Pd/Ru variations in chromitites from the Critical zone, Bushveld Complex, South Africa. Geochim. Cosmochim. Acta, 63 911-923.
19. Mossom, J. R. (1986). The Atok platinum mine. In C. R. Anhaeusser, S. Maske (Eds.), Mineral deposits of southern Africa, 1143-1154. Johannesburg: Geological Society of South Africa.
20. Naldrett, A. J., Gasparini, E. C., Barnes, S. J., von Gruenewaldt, G., & Sharpe, M. R. (1986). The Upper Critical zone of the Bushveld Complex and the origin of Merensky-type ores. Econ. Geol, 81 1105-1117.
21. Schoenberg, R., Kruger, F. J., Nägler, T. F., Meisel, T., & Kramers, J. D. (1999). PGE enrichment in chromitite layers and the Merensky reef of the western Bushveld complex; a Re-Os and Rb-Sr isotope study. Earth Planet. Sci. Lett, 172 49-64.
22. Seccombe, P. K., & Barnes, H. L. (1990). Experimental mobility of sulfides along hydrothermal gradients. Econ. Geol, 85 1099-1113.
23. Stacey, J. S., & Kramers, J. D. (1975). Approximation of terrestrial lead isotope evolution by a two-stage model. Earth Planet. Sci. Lett, 26 207-221.
24. Walder J. W., Freedman P. A., Abell I. A., Walkden P., Platzner I. (1993) Isotope ratio measurements of U, Pb, Hf and Nd in solution and of Pb in glasses with a double focusing multiple collection ICP-MS. 40thASMS Conf. On Mass Spectrometry and Allied Topics
25. Willigers, B. J., Baker, J. A., Krogstad, E. J., & Peate, D. W. (2002). Precise and accurate in situ Pb-Pb dating of apatite, monazite and sphere by laser ablation multiple-collector ICP-MS. Geochim. Cosmochim. Acta, 66 1051-1066.
26. Willmore, C. C., Boudreau, A. E., & Kruger, F. J. (2000). The halogen geochemistry of the Bushveld Complex, Republic of South Africa. Implications for chalcophile element distribution in the Lower and Critical zones. J. Petrol, 41 1517-1539.
27. Wilson, A. H., Lee, C. A., & Brown, R. T. (1999). Geochemistry of the Merensky reef, Rustenburg section, Bushveld Complex: controls on the silicate framework and distribution of trace elements. Min. Dep, 34 657-672.
28. Wooden, J. L., Czamanske, G. K., & Zientek, M. L. (1991). A lead isotopic study of the Stillwater Complex, Montana: constraints on crustal contamination and source regions. Contrib. Mineral. Petrol, 107 80-93.
29. Zartman, R. E., & Haines, S. M. (1988). The plumbotectonic model for Pb isotopic systematics among major terrestrial reservoirs-a case for bi-directional transport. Geochim. Cosmochim. Acta, 52 1327-1339.