Overlap of Karoo and Ferrar magma types in KwaZulu-Natal, South Africa

Journal of Petrology

Volumn 47, Issue 3, 2006, Pages 541-566

  Riley, T R ^a   Curtis, M L ^a   Leat, P T ^a   Watkeys, M K ^b   Duncan, R A ^c   Millar, I L ^a   Owens, W H ^d  

^a BRITISH ANTARCTIC SURVEY   (United Kingdom)

^b UNIVERSITY OF KWAZULU NATAL   (South Africa)

^c OREGON STATE UNIVERSITY   (United States)

^d UNIVERSITY OF BIRMINGHAM   (United Kingdom)

Author keywords

Basalt; Crustal contamination; Dyke; Large igneous province

Indexed keywords

CRUSTAL CONTAMINATION; LARGE IGNEOUS PROVINCE; MAGMATISM;

AFRICA; KWAZULU-NATAL; SOUTH AFRICA; SOUTHERN AFRICA; SUB-SAHARAN AFRICA;

EID: 33144465058     PISSN: 00223530     EISSN: None     Source Type: Journal    
DOI: 10.1093/petrology/egi085     Document Type: Article

References (81)

1. Allsopp, H. L., Bristow, J. W., Logan, C. T., Eales, H. V. & Erlank, A. J. (1984). Rb-Sr geochronology of three Karoo-related intrusive complexes. In: Erlank, A. J. (ed.) Petrogenesis of the Volcanic Rocks of the Karoo Province. Geological Society of South Africa, Special Publication 13, 281-287.
2. Antonini, P., Picciirillo, E. M., Petrini, R., Civetta, L., D'Antonio, M. & Orsi, G. (1999). Enriched mantle-Dupal signature in the genesis of the Jurassic Ferrar tholeiites from Prince Albert Mountains (Victoria Land, Antarctica). Contributions to Mineralogy and Petrology 136, 1-19.
3. Archanjo, C. J., Trindade, R. I., Macedo, J. W. P. & Araújo, M. G. (2000). Magnetic fabric of a basaltic dyke swarm associated with Mesozoic rifting in northeastern Brazil. Journal of South American Earth Sciences 13, 179-189.
4. Brewer, T. S., Hergt, J. M., Hawkesworth, C. J., Rex, D. & Storey, B. C. (1992). Coats Land dolerites and the generation of Antarctic continental flood basalts. In: Storey, B., Alabaster, T. & Pankhurst, R. (eds) Magmatism and the Causes of Continental Break-up. Geological Society, London, Special Publications 68, 185-208.
5. Callot, J.-P., Geoffroy, L., Aubourg, C., Pozzi, J. P. & Mege, D. (2001). Magma flow directions of shallow dykes from the East Greenland volcanic margin inferred from magnetic fabric studies. Tectonophysics 335, 313-329.
6. Cañón-Tapia, E., Walker, G. P. L. & Herrero-Bervera, E. (1996). The internal structure of lava flows - insights from AMS measurements 1: Near vent a'a. Journal of Volcanology and Geothermal Research 70, 21-36.
7. Chevallier, L. & Woodford, A. (1999). Morpho-tectonics and mechanism of emplacement of the dolerite rings and sills of the western Karoo, South Africa. South African Journal of Geology 102, 43-54.
8. Cox, K. G. (1988). Numerical modelling of a randomized RTF magma chamber: A comparison with continental flood basalt sequences. Journal of Petrology 29, 681-698.
9. Cox, K. G. (1992). Karoo igneous activity, and the early stages of the break-up of Gondwanaland. In: Storey, B. C., Alabaster, T. & Pankhurst, R. J. (eds) Magmatism and the Causes of Continental Break-up. Geological Society, London, Special Publications 68, 137-148.
10. Cox, K. G., MacDonald, R. & Hornung, G. (1967). Geochemical and petrographic provinces in the Karoo basalts of southern Africa. American Mineralogist 52, 1451-1474.
11. DePaolo, D. J. (1981). Trace element and isotopic effects of combined wallrock assimilation and fractional crystallization. Earth and Planetary Science Letters 53, 189-202.
12. Dragoni, M., Lanza, R. & Tallarico, A. (1997). Magnetic anisotropy produced by magma flow: Theoretical model and experiemtal data from Ferrar dolerite sills (Antarctica). Geophysical Journal International 128, 230-240.
13. Duncan, A. R., Armstrong, R. A., Erlank, A. J., Marsh, J. S. & Watkins, R. T. (1990). MORB-related dolerites associated with the final phases of Karoo flood basalt volcanism in southern Africa. In: Parker, A. J., Rickwood, P. C. & Tucker, D. H. (eds) Mafic Dykes and Emplacement Mechanisms. Rotterdam: Balkema, pp. 119-129.
14. Duncan, R. A., Hooper, P. R., Rehacek, J., Marsh, J. S. & Duncan, A. R. (1997). The timing and duration of the Karoo igneous event, southern Gondwana. Journal of Geophysical Research 102, 18127-18138.
15. Eglington, B. M. & Armstrong, R. A. (2003). Geochronological and isotopic constraints on the Mesoproterozoic Namaqua-Natal Belt: Evidence from deep borehole intersections in South Africa. Precambrian Research 125, 179-189.
16. Elburg, M. & Goldberg, A. (2000). Age and geochemistry of Karoo dolerite dykes form northeast Botswana. Journal of African Earth Sciences 31, 539-554.
17. Ellam, R. M. & Cox, K. G. (1991). An interpretation of Karoo picrite basalts in terms of interaction between asthenospheric magmas and the mantle lithosphere. Earth and Planetary Science Letters 105, 330-342.
18. Ellam, R. M., Carlson, R. W. & Shirley, S. B. (1992). Evidence from Re-Os isotopes for plume-lithosphere mixing in Karoo flood basalt genesis. Nature 359, 718-721.
19. Elliot, D. H. & Fleming, T. H. (2000). Weddell triple junction: The principal focus of Ferrar and Karoo magmatism during initial breakup of Gondwana. Geology 28, 539-542.
20. Elliot, D. H., Fleck, R. J. & Sutter, J. F. (1985). K-Ar age determinations of Ferrar Group rocks, central Trnsantarctic Mountains. Antarctic Research Series 36, 197-224.
21. Elliot, D. H., Fleming, T. H., Kyle, P. R. & Foland, K. A. (1999). Long-distance transport of magmas in the Jurassic Ferrar large igneous province, Antarctica. Earth and Planetary Science Letters 167, 89-104.
22. Encarnación, J., Fleming, T. H., Elliot, D. H. & Eales, H. V. (1996). Synchronous emplacement of Ferrar and Karoo dolerites and the early breakup of Gondwana. Geology 24, 535-538.
23. Erlank, A. J. (1984). Petrogenesis of the Volcanic Rocks of the Karoo Province. Geological Society of South Africa, Special Publication 13.
24. Erlank, A. J., Waters, F. G., Hawkesworth, C. J., Haggerty, S. E., Allsopp, H. L., Rickard, R. S. & Menzies, M. A. (1987). Evidence for mantle metasomatism in peridotite nodules from the Kimberley pipes, South Africa. In: Menzies, M. A. & Hawkesworth, C. J. (eds) Mantle Metasomatism. London: Academic Press, pp. 221-311.
25. Ernst, R. E. & Baragar, W. R. A. (1992). Evidence from magnetic fabric from the flow pattern of the magma in the Mackenzie giant radiating dyke swarm. Nature 356, 511-513.
26. Faure, G., Bowman, J. R., Elliot, D. H. & Jones, L. M. (1974). Strontium isotope composition and petrogenesis of the Kirkpatrick Basalt, Queen Alexandra Range, Antarctica. Contributions to Mineralogy and Petrology 48, 153-16
27. 86Sr ratios and major element concentrations in the Kirkpatrick Basalt of Mount Falla, Queen Alexandra Range, Transantarctic Mountains. In: Craddock, C. (ed.) Antarctic Geosciences. Madison, WI: University of Wisconsin Press, pp. 15-723.
28. 39Ar age spectrum methods. In: Erlank, A. J. (ed.) Petrogenesis of the Volcanic Rocks of the Karoo Province. Geological Society of South Africa, Special Publication 13, 247-266.
29. 39Ar geochronology of Ferrar dolerite sills from the Transantarctic Mountains, Antarctica: Implications for the age and origin of the Ferrar magmatic province. Geological Society of America Bulletin 109, 533-546.
30. Floyd, P. A. (1985). Petrology and geochemistry of intraplate sheet-flow basalts, Nauru Basin, Deep Sea Drilling Project leg 89. In: Moberley, R. & Schlanger, S. O. (eds) Initial Reports of the Deep Sea Drilling Project, 89. Washington, DC: US Government Printing Office, pp. 471-497.
31. Fowler, S. J., Bohrson, W. A. & Spera, F. J. (2004). Magmatic evolution of the Skye igneous centre, western Scotland: Modelling of assimilation, recharge and fractional crystallization. Journal of Petrology 45, 2481-2505.
32. Guo, Z., Hertogen, J., Liu, J., Pasteels, P., Boven, A., Punzalan, L., He, H., Luo, X. & Zhang, W. (2005). Potassic magmatism in western Sichuan and Yunnan Provinces, SE Tibet, China: Petrological and geochemical constraints on petrogenesis. Journal of Petrology 46, 33-78.
33. Harmer, R. E., Lee, C. A. & Eglington, B. M. (1998). A deep mantle source for carbonatite magmatism: Evidence from the nephelinites and carbonatites of the Buhera district, SE Zimbabwe. Earth and Planetary Science Letters 158, 131-142.
34. Harris, C., Marsh, J. S., Duncan, A. R. & Erlank, A. J. (1990). The petrogenesis of the Kirwan Basalts of Dronning Maud Land, Antarctica. Journal of Petrology 31, 341-369.
35. Hawkesworth, C. J., Marsh, J. S., Duncan, A. R., Erlank, A. J. & Norry, M. J. (1984). The role of continental lithosphere in the generation of the Karoo volcanic rocks: Evidence from combined Nd- and Sr-isotope studies. In: Erlank, A. J. (ed.) Petrogenesis of the Volcanic Rocks of the Karoo Province. Geological Society of South Africa, Special Publication 13, 341-354.
36. Hawkesworth, C. J., Kelley, S. P., Turner, S. P., le Roex, A. P. & Storey, B. C. (1999). Mantle processes during Gondwana break-up. Journal of South African Earth Sciences 28, 239-261.
37. Haycock, C. A., Mason, T. R. & Watkeys, M. K. (1997). Early Triassic palaeoenvironments in the eastern Karoo foreland basin, South Africa. Journal of South African Earth Sciences 24, 79-94.
38. 39Ar geochronology. Earth and Planetary Science Letters 121, 19-41.
39. Hergt, J. M. (2000). Comment on: 'Enriched mantle-Dupal signature in the genesis of the Jurassic Ferrar tholeiites from Prince Albert Mountains (Victoria Land, Antarctica)' by Antonini et al. (Contributions to Mineralogy and Petrology 136, 1-19). Contributions to Mineralogy Petrology 139, 240-244.
40. Hergt, J. M., Peate, D. W. & Hawkesworth, C. J. (1991). The petrogenesis of Mesozoic Gondwana low-Ti flood basalts. Earth and Planetary Science Letters 105, 134-148.
41. Herrero-Bervera, E., Walker, G. P. L., Cañón -Tapia, E. & Garcia, M. O. (2001). Magnetic fabric and inferred flow direction of dikes, conesheets and sill swarms, Isle of Skye, Scotland. Journal of Volcanology and Geothermal Research 106, 195-210.
42. Jones, D. L., Duncan, R. A., Briden, J. C., Randall, D. E. & MacNiocaill, C. (2001). Age of the Bakota basalts, northern Zimbabwe, and the duration of Karoo large igneous province magmatism. Geochemistry, Geophysics, Geosystems 2, 2000GC000110.
43. Knight, M. D. & Walker, G. P. L. (1988). Magma flow directions in dykes of the Koolau Complex, Oahu, determined from magnetic fabric studies. Journal of Geophysical Research 93, 4301-4319.
44. Koppers, A. A. P. (2002). ArArCALC - software for Ar-40/Ar-39 age calculations. Computers and Geosciences 28, 605-619.
45. Kyle, P. R. (1980). Development of heterogeneities in the subcontinental mantle: Evidence from the Ferrar Group, Antarctica. Contributions to Mineralogy and Petrology 73, 89-104.
46. Le Bas, M. J., Le Maitre, R. W., Streckeisen, A. & Zanettin, B. (1986). A chemical classification of volcanic rocks based on the total alkali-silica diagram. Journal of Petrology 27, 745-750.
47. 39Ar geochronology and structural data from the giant Okavango and related mafic dyke swarms, Karoo igneous province, northern Botswana. Earth and Planetary Science Letters 202, 595-606.
48. Lightfoot, P. C. & Naldrett, A. J. (1984). Chemical variation in the Insizwa Complex, Transkei, and the nature of the parent magma. Canadian Mineralogist 22, 169-187.
49. Liss, D., Hutton, D. H. W. & Owens, W. H. (2002). Ropy flow structures: a neglected indicator magma-flow direction in sills and dykes. Geology 30, 715-718.
50. Luttinen, A. V. & Furnes, H. (2000). Flood basalts of Vestfjella: Jurassic magmatism across an Archaean-Proterozoic lithospheric boundary in Dronning Maud Land, Antarctica. Journal of Petrology 41, 1271-1305.
51. Marsh, J. S., Hooper, P. R., Rehacek, J., Duncan, R. A. & Duncan, A. R. (1997). Stratigraphy and age of Karoo basalts of Lesotho and implications for correlations with the Karoo igneous province. In: Mahoney, J. J. & Coffin, M. F. (eds) Large Igneous Provinces: Continental, Oceanic, and Planetary Flood Volcanism. Geophysical Monograph, American Geophysical Union 100, 247-272.
52. Menzies, M. A. & Hawkesworth, C. J. (eds) (1987). Mantle Metasomatism. London: Academic Press.
53. 39Ar ages for the Dufek layered mafic intrusion, Antarctica: implications for the age of the Ferrar large igneous province. Geochimica et Cosmochimica Acta 61, 2497-2504.
54. Mitchell, C., Ellam, R. M. & Cox, K. G. (1999). Mesozoic dolerite dykes of the Falkland Islands: Petrology, petrogenesis and implications for geochemical proivinciality in Gondwanaland low-Ti basaltic rocks. Journal of the Geological Society, London 156, 901-916.
55. Molzahn, M., Reisberg, L. & Wörner, G. (1996). Os, Sr, Nd, Pb and O isotope and trace element data from the Ferrar flood basalts, Antarctica: Evidence for an enriched subcontinental lithospheric source. Earth and Planetary Science Letters 144, 529-546.
56. Nakamura, N. (1974). Determination of REE, Ba, Fe, Mg, Na and K in carbonaceous and ordinary chondrites. Geochimica et Cosmochimica Acta 38, 757-773.
57. Ottley, C. J., Pearson, D. G. & Irvine, G. J. (2003). A routine method for the dissolution of geological samples for the analysis of REE and trace elements via ICP-MS. In: Warwick, p. (ed.), Plasma Source Mass Spectrometry. Environmental Radiochemical Analysis II, Special Publication 291, Royal Society of Chemistry 221-230.
58. Pálfy, J. & Smith, P. L. (2000). Synchrony between Early Jurassic extinction, oceanic anoxic event, and the Karoo-Ferrar flood basalt volcanism. Geology 28, 747-750.
59. Pankhurst, R. J. & Rapela, C. R. (1995). Production of Jurassic rhyolites by anatexis of the lower crust of Patagonia. Earth and Planetary Science Letters 134, 23-36.
60. Park. K., Tanczyk, E. I. & Desbarats, A. (1988). Magnetic fabric and its significance in the 1400 Ma Mealy diabase dykes of Labrador, Canada. Journal of Geophysical Research 93, 13689-13704.
61. Pearce, J. A. & Peate, D. W. (1995). Tectonic implications of the composition of volcanic arc magmas. Annual Review of Earth and Planetary Sciences 23, 251-285.
62. Peate, D.W. (1997). The Paraná-Etendeka Province. In: Mahoney, J. J. & M. Coffin, M. F. (eds) Large Igneous Provinces: Continental, Oceanic, and Planetary Flood Volcanism. Geophysical Monograph, American Geophysical Union 100, 217-245.
63. Plank, T. & Langmuir, C. H. (1998). The chemical composition of subducting sediment and its consequences for the crust and mantle. Chemical Geology 145, 325-394.
64. Puffer, J. H. (2001). Contrasting high field strength element contents of continental flood basalts from plume vs reactivated-arc sources. Geology 29, 675-678.
65. Renne, P. R., Deino, A. L., Walter, R. C., Turrin, B. D., Swisher, C. C., Becker, T. A., Curtis, G. H., Sharp, W. D. & Jaouni, A.-R. (1994). Intercalibration of astronomical and radioisotopic time. Geology 22, 783-786.
66. Renne, P. R., Swisher, C. C., Deino, A. L., Karner, D. B., Owens, T. L. & DePaolo, D. J. (1998). Intercalibration of standards, absolute ages 1and uncertainties in Ar-Ar dating. Chemical Geology 145, 117-152.
67. Riley, T. R. & Knight, K. B. (2001). Age of pre-break-up Gondwana magmatism: A review. Antarctic Science 13, 99-110.
68. Riley, T. R., Millar, I. L., Watkeys, M. K., Curtis, M. L., Leat, P. T., Klausen, M. B. & Fanning C. M. (2004). U-Pb zircon (SHRIMP) ages for the Lebombo rhyolites, South Africa: Refining the duration of Karoo volcanism. Journal of the Geological Society, London 161, 542-545.
69. Riley, T. R., Leat, P. T., Curtis, M. L., Millar, L. L. & Fazel, A. (2005). Early-Middle Jurassic dolerite dykes from western Dronning Maud Land (Antarctica): Identifying mantle sources in the Karoo large igneous province. Journal of Petrology 46, 1489-1524.
70. Rochette, P., Jackson, M. & Aubourg, C. (1992). Rock magnetism and the interpretation of anisotropy of magnetic susceptibility. Reviews in Geophysics 30, 209-226.
71. Rochette, P., Aubourg, C. & Mireille, P. (1999). Is this magnetic fabric normal? A review and case studies in volcanic formations. Tectonophysics 307, 219-234.
72. Saunders, A. D., Storey, M., Kent, R. W. & Norry, M. J. (1992). Consequences of plume-lithosphere interactions. In: Storey, B. C., Alabaster, T. & Pankhurst, R. J. (eds) Magmatism and the Causes of Continental Break-up. Geological Society, London, Special Publications 68, 41-60.
73. Smith, R. M. H. (1990). A review of stratigraphy and sedimentary environments of the Karoo Basin of South Africa. Journal of African Earth Sciences 10, 117-137.
74. Spera, F. J. & Bohrson, W. A. (2004). Open-system magma chamber evolution: An energy-constrained geochemical model incorporating the effects of concurrent eruption, recharge, variable assimilation, and fractional crystallization. Journal of Petrology 45, 2459-2480.
75. Sun, S. S. & McDonough, W. F. (1989). Chemical and isotopic systematics of oceanic basalts: Implications for mantle composition and processes. In: Saunders, A. D. & Norry, M. J. (eds) Magmatism in the Ocean Basins. Geological Society, London, Special Publications 42, 313-345.
76. Sweeney, R. J., Duncan, A. R. & Erlank, A. J. (1994). Geochemistry and petrogenesis of central Lebombo basalts of the Karoo igneous province. Journal of Petrology 35, 95-125.
77. Tatsumi, Y. & Hanyu, T. (2003). Geochemical modelling of dehydration and partial melting of subducting lithosphere: Towards a comprehensive understanding of high-Mg andesite formation in the Setouchi volcanic belt, SW Japan. Geochemistry, Geophysics, Geosystems 4, 2003GC000530.
78. Tauxe, L., Gee, J. S. & Staudigel, H. (1998). Flow directions in dikes from anisotropy of magnetic susceptibility data: The bootstrap way. Journal of Geophysical Research 103, 17775-17790.
79. Turner, B. R. (1999). Tectonostratigraphical development of the upper Karoo foreland basin: Orogenic unloading versus thermally-induced Gondwana Rifting. Journal of African Earth Sciences 28, 215-238.
80. 39Ar and K-Ar dating of altered glassy volcanic rocks: The Dabi volcanics, P.N.G. Geochimica et Cosmochimica Acta 46, 2181-2190.
81. Yoder, H. S. & Tilley, C. E. (1962). Origin of basalt magmas: An experimental study of natural and synthetic rock systems. Journal of Petrology 3, 342-532.