Fine-grained pyroxenites from the Gansfontein kimberlite, South Africa: Evidence for megacryst magma - mantle interaction

South African Journal of Geology

Volumn 107, Issue 1-2, 2004, Pages 285-300

  Doyle, P M ^a,b   Bell, D R ^a,c   le Roex, A P ^a  

^a UNIVERSITY OF CAPE TOWN   (South Africa)

^b Arizona State University ^*  (South Africa)

^c ARIZONA STATE UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

KIMBERLITE; MAGMA CHEMISTRY; MANTLE PROCESS; MEGACRYST; PYROXENITE; XENOLITH;

AFRICA; KAAPVAAL CRATON; SOUTHERN AFRICA; SUB-SAHARAN AFRICA;

EID: 4444234150     PISSN: 10120750     EISSN: None     Source Type: Journal    
DOI: 10.2113/107.1-2.285     Document Type: Article

References (49)

1. Bell, D. R. and Moore, R. O. (2004). Deep chemical structure of the southern African mantle from kimberlite megacrysts. South African Journal of Geology, 107, 59-80.
2. Bell, D. R., Schmitz, M. D., Janney, P. E. (2003) Mesozoic thermal evolution of the southern African mantle lithosphere. Lithos, 71, 273-287.
3. Boyd, F. R. (1974). Ultramafic nodules from the Frank Smith-kimberlite pipe. Carnegie Institution of. Washington Yearbook, 73, 285-294.
4. Boyd, F. R., Dawson, J. B., Smith, J. V. (1984a). Granny Smith diopside megacrysts from the kimberlites of the Kimberley area and Jagersfontein, South Africa. Geochimica et Cosmochimica Acta, 48, 381-384.
5. Boyd, F. R. and Nixon, P. H. (1973). Origin of the ilmenite-silicate nodules in kimberlites from Lesotho and South Africa. In: P. H. Nixon PH (Editor) Lesotho Kimberlites. Lesotho National Development Corporation, Maseru, 254-268.
6. Boyd, F. R. and Nixon, P. H. (1975). Origins of the ultramafic nodules from some kimberlites of northern Lesotho and the Monastery Mine, South Africa. Physics and Chemistry of the Earth, 9, 431-454.
7. Boyd, F. R. and Nixon, P. H. (1980). Discrete nodules from the kimberlites of East Griqualand, southern Africa. Carnegie Institution of. Washington Yearbook, 79, 296-302.
8. Boyd, F. R., Nixon, P. H. and Boctor, N. Z. (1984b). Rapidly crystallized garnet pyroxenite xenoliths possible related to discrete nodules. Contributions to Mineralogy and Petrology, 86, 119-130.
9. Brey, G. P. and Köhler, T. (1990). Geothermobarometry in four phase lherzolites II. New thermobarometers and practical assessment of existing thermobarometers. Journal of Petrology, 31, 1353-1378.
10. Burgess, S. R. and Harte, B. (1999). Tracing lithosphere evolution through the analysis of heterogeneous G9/G10 garnets in peridotite xenoliths, I: major element chemistry, In: J. J. Gurney, J.L., Gurney , M. D. Pascoe and S. H. Richardson (Editors). The J.B. Dawson Volume, Proceedings of the. 7th International Kimberlite Conference, Red Roof Design, Cape Town, South Africa, 66-80.
11. Dawson, J. B. and Smith, J. V. (1977). The MARID (mica-amphibole-rutileilmenite-diopside) suite of xenoliths in kimberlite. Geochimica et Cosmochimica Acta, 41, 309-323.
12. De Bruin, D. (1993). The megacryst suite from the Schuller kimberlite, South Africa. Bulletin of the Geological Survey of South Africa, 114, 112 pp.
13. Doyle, P. M. (1999). A petrologic and geochemical study of the megacryst suite and related nodules from the Gansfontein kimberlite, RSA. Unpublished B.Sc Honours thesis, University of Cape Town, South Africa, 84pp + appendices.
14. Eggler, D. H., McCallum, M.E. and Smith, C.B. (1979). Megacryst assemblages in kimberlite from northern Colorado and southern Wyoming: petrology, geothermometry-barometry, and areal distribution, In: F. R. Boyd and H. O. A. Meyer (Editors) The mantle sample: inclusions in kimberlites and other volcanics. American Geophysical Union, Washington, D.C., U.S.A., 213-226.
15. Griffin, W. L., O'Reilly, S. Y., Natapov, L. M. and Ryan, C. G. (2003). The evolution of the lithospheric mantle beneath the Kalahari Craton and its margins, Lithos, 71, 215-241.
16. Gurney, J. J., Fesq, H. W. and Kable, E. J. D. (1973). Clinopyroxene-ilmenite intergrowths from kimberlite: a re-appraisal. In. P. H. Nixon (Editor) Lesotho kimberlites. Lesotho National Development Corporation, Maseru, 238-253.
17. Gurney, J. J. and Harte, B. (1980) Chemical variations in upper mantle nodules from southern African kimberlites. Philosophical Transactions of the Royal Society of London, A297, 273-293.
18. Gurney, J. J., Jakob, R. E., Dawson, J. B. (1979) Megacrysts from the Monastery kimberlite, South Africa. In. F. R. Boyd and H. O. A.Meyer (Editors) The mantle sample: inclusions in kimberlites and other volcanics. American Geophysical Union, Washington, D.C., U.S.A., 227-243.
19. Harley, S. L. (1984). An experimental study of the partitioning of Fe and Mg between garnet and orthopyroxene, Contributions to Mineralogy and Petrology, 86, 359-373.
20. Harte, B., Hunter, R. H. and Kinny, P. D. (1993) Melt geometry, movement and crystallization, in relation to mantle dykes, veins and metasomatism. Philosophical Transactions of the Royal Society of London, A342, 1-21.
21. Hops, J. J. (1989) Some aspects of the geochemistry of high-temperate peridotites and megacrysts from the Jagersfontein kimberlite pipe, South Africa, Unpublished Ph.D. thesis, University of Cape Town, South Africa, 208pp.
22. Hops, J. J., Gurney, J. J., Harte, B. and Winterburn, P. (1989). Megacrysts and high temperature nodules from the Jagersfontein kimberlite pipe. In: J. Ross, A. L. Jaques, J. Ferguson, D. H. Green, S. Y. O'Reilly, R. V. Danchin and A. J. A. Janse. (Editors), Kimberlites and Related rocks. Volume 2. Their mantle/crust setting, diamonds and diamond exploration. Geological Society of Australia Special Publication, 14, 759-770.
23. Jakob, W. R. O. (1977). Geochemical aspects of the megacryst suite from the Monastery kimberlite pipe. Unpublished M.Sc. thesis, University of Cape Town, South Africa, 81pp.
24. Janney, P. E., Carlson, R.W., Shirey, S. B., Bell, D. R. and Le Roex, A. P. (1999). Temperature, pressure and Re-Os age systematics of peridotite xenoliths from the off-craton Namaqua-Natal belt, Western South Africa. Extended Abstracts, 9th Annual V. M. Goldschmidt Conference, Abstract#7268, LPI Contribution No. 971, Lunar and Planetary Institute, Houston, USA, CD Rom.
25. Janney, P. E., Carlson, R W, Shirey, S B, Bell D R and le Roex. A P. (2001). Re-Os Age and Thermal Structure of Off-Craton Lithospheric Mantle in Western South Africa Eos, Abstracts. AGU Spring Meeting 2000.
26. Jones, R. A. (1987). Strontium and neodymium isotopic and rare-earth element evidence for the genesis of megacrysts in kimberlites of southern Africa. In: Nixon, P. H. (Editor), Mantle xenoliths. John Wiley and Sons, Chichester, U.K., 711-724.
27. Kelemen, P. B. (1995). Generation of high-Mg andesites and the continental crust. Contributions to Mineralogy and Petrology, 120, 1-19.
28. Kelemen, P. B., Dick, H. J. B. and Quick, J. E. (1992). Formation of harzburgite by pervasive melt rock reaction in the upper mantle, Nature, 358, 635-641.
29. Kelemen, P. B., Shimizu, N. and Safters, V. J. M. (1995). Extraction of mid-ocean-ridge basalt from the upwelling mantle by focused flow of melt in dunite channels. Nature, 375, 747-753.
30. Konzett J., Armstrong, R. A. and Gunther, D. (2000). Modal metasomatism in the Kaapvaal craton lithosphere: constraints on timing and genesis from U-Pb zircon dating of metasomatized peridotites and MARID-type xenoliths. Contributions to Mineralogy and Petrology, 139, 704-719.
31. Moore, R. O. (1986). A study of the kimberlites, diamonds and associated rocks and minerals from the Monastery Mine, South Africa. Unpublished Ph.D. thesis, University of Cape Town, South Africa, 354 pp.
32. Moore, R. O., Griffin, W. L., Gurney, J. J., Ryan, C. G., Cousens, D. R., Sie, S. H. and Suter, G. F. (1992). Trace element geochemistry of ilmenite megacrysts from the Monastery kimberlite, South Africa. Lithos, 29, 1-18.
33. Neal, C. R. and Davidson, J. P. (1989). An unmetasomatized source for the Malaitan alnoite (Solomon Islands) : Petrogenesis involving zone refining, megacryst fractionation, and assimilation of oceanic lithosphere. Geochimica et Cosmochimica Acta, 53, 1975-1990.
34. Nixon, P. H. and Boyd, F.R. (1973). The discrete nodule association in kimberlites from Northern Lesotho. In. P.H. Nixon (Editor), Lesotho kimberlites, Lesotho National Development Corporation, Maseru. 67-75.
35. Pollack, H. N. and Chapman, D. S. (1977). On the regional variation of heat flow, geotherms and lithospheric thickness, Tectonophysics, 38, 279-296.
36. Pochou, J.-L. and Pichoir, R. (1991) Quantitative analysis of homogeneous or stratified microvolumes applying the model "PAP". In: K. F. J. Heinrich and D. E. Newbury (Editors), Electron probe quantitation. Plenum, New York. U.S.A., 31-76.
37. Rawlinson, P. J. and Dawson. J. B. (1979). A quench pyroxene-ilmenite xenolith from kimberlite: implications for pyroxene-ilmenite intergrowths. In, F. R. Boyd and H. O. A.Meyer (Editors), The mantle sample: inclusions in kimberlites and other volcanics. American Geophysical Union, Washington, D.C., U.S.A., 292-299.
38. Rickwood, P. C. (1969). The nature and occurrences of non-eclogitic ultramafic xenotiths in the kimberlites of southern Africa. Geological Society of South Africa Special Publication, 2, 395-416.
39. Robey, J. V. (1981). Kimberlites of the Central Cape Province, South Africa. Unpublished Ph.D. thesis, University of Cape Town, South Africa, 261 pp. + appendices.
40. Rogers, A.W. (1910). Geological survey of parts of the divisions of Beaufort West, Fraserburg, Victoria West, Sutherland and Laingsburg. Annual Report of the Geological Commission of the Cape of Good Hope, 15, 9-66.
41. Sautter, V. and Harte, B. (1990). Diffusion gradients in an eclogite xenolith from the Roberts Victor kimberlite: (2) kinetics and implications for petrogenesis. Contributions to Mineralogy, and Petrology, 105, 637-649.
42. Schulze, D. J. (1984). Cr-poor megacrysts from the Hamilton Branch kimberlite, Elliott County, Kentucky. In: J. Kornprobst (Editor) Kimberlites II. The Mantle and Crust-Mantle Relationships. Developments in Petrology, Elsevier, Amsterdam, the Netherlands, 11B, 97-108.
43. Schulze, D.J. (1987). Megacrysts from alkalic volcanic rocks. In; P.H. Nixon (Editor), Mantle Xenoliths, John Wiley anad Sons, Chichester, U.K., 433-452.
44. Smith, D. (1999). Temperatures and pressures of mineral equilibration in peridotite xenoliths: review, discussion, and implications. In. Y. Fei, C. M. Bertka and B. O.Mysen (Editors), Mantle petrology: field observations and high pressure experimentation: a tribute to Francis R. (Joe) Boyd. Geochemical Society Special Publication, 6, 171-188.
45. Smith, D. and Boyd, F. R. (1987). Compositional heterogeneities in a high temperature lherzolite nodule and implications for mantle processes. In. P.H. Nixon (Editor), Mantle Xenoliths, John Wiley and Sons, Chichester, U.K., 551-561.
46. Wagner, T. P. and Grove, T.L. (1998). Melt/halzburgite reaction in the petrogenesis of tholeiitic magma from Kilauea Volcano, Hawaii. Contributions to Mineralogy and Petrology, 131. 1-12.
47. Waters, F. G. (1987). A geochemical study of metasomatized peridotite and MARID nodules from the Kimberley pipes, South Africa. Unpublished Ph.D. thesis. University of Cape Town, South Africa, 294 pp.
48. Wyatt, B.A. ( 1977). The melting and crystallization behaviour of a natural clinopyroxene-ilmenite intergrowth. Contributions to Mineralogy and Petrology, 61, 1-9.
49. Wyllie, P. J., Carroll, M. R., Johnston, A. D., Rutter, M. J., Sekine, T. and Van der Laan, S. R. (1989). Interactions among magmas and rocks in subduction zone regions: experimental studies from slab to mantle to crust. European Journal of Mineralogy, 1, 165-179.