Pan-African rejuvenation of the c. 1.1 Ga Natal Metamorphic Province(South Africa): K-Ar muscovite and titanite fission track evidence

Journal of the Geological Society

Volumn 153, Issue 6, 1996, Pages 971-978

  Jacobs, J ^a   Thomas, R J ^b  

^a UNIVERSITY OF BREMEN   (Germany)

^b Western Cape Regional Office   (South Africa)

Author keywords

Fission track dating; Gondwana; Natal South Africa; Pan African Orogeny; Titanite

Indexed keywords

FISSION TRACK ANALYSIS; GONDWANA; PAN AFRICAN OROGENY; POTASSIUM/ARGON DATING; PROTEROZOIC;

SOUTH AFRICA, NATAL;

EID: 0030428979     PISSN: 00167649     EISSN: None     Source Type: Journal    
DOI: 10.1144/gsjgs.153.6.0971     Document Type: Article

References (43)

1. ADIE, R.J. 1952. The Position of the Falkland Islands in a Reconstruction of Gondwanaland. Geological Magazine, 89, 401-410.
2. ALLEN, R.B. & TUCHOLKE, B.E. 1981. Petrography and implications of continental rocks from the Agulhas Plateau, southwest Indian Ocean. Geology, 9, 463-468.
3. BECKINSALE, R.D., TARNEY, J., DARBYSHIRE, D.P.F. & HUMM, M.J. 1977. Rb-Sr and K-Ar age determinations on samples of the Falkland Plateau basement at site 330 DSDP. Initial Reports of DSDP, 36, 923-927.
4. BROWN, R.D., RUST, D.J., SUMMERfIELD, M.A., GLEADOW, A.J.W. & DE WIT, M.C.J. 1990. An Early Cretaceous phase of accelerated erosion on the south-western margin of Africa: evidence from apatite fission track analysis and the offshore sedimentary record. Nuclear Trucks and Radiation Measurements, 17, 339-350.
5. CINGOLAM, C.A. & VARELA, R. 1976. Investigaciones geologicas y geochronologicas en el extremo sur de Ia isala Gran Malvina, sector de Cabo Belgrano (Cabo Meredith). Islas Malvinas. Actas del Sexto Congreso Geologico, Buenos Aires. 457-473.
6. COYLE, D.A. & WAGNER, G.A. 1994. Fission-track investigations on sphenes from the KTB Deep Drilling Project (Germany): Post-Permian cooling history and in situ annealing. KTB Reports, (in press).
7. EVANS, M.J., EGLINGTON, B.M., KERR, A. & SAGGERSON, E.P. 1987. The geology of the Proterozoic rocks around Umzinto, southern Natal, South Africa. South African Journal of Geology, 90, 471-188.
8. GALBRAITH, R.F. 1990, The radial plot: graphical assessment of spread in ages. Nuclear Tracks and Radiation Measurements, 17, 207-214.
9. GLEADOW, A.J.W. 1981. Fission track dating methods: what are the real alternatives? Nuclear Tracks and Radiation Measurements, 5, 3-14.
10. GRANTHAM, G.H., MOYES, A.B. & HUNTER, D.R. 1991. The age petrogenesis and emplacement of the Dalmatian Granite, H.U. Sverdrupfjella, Dronning Maud Land, Antarctica. Antarctic Science, 2, 197-204.
11. HARTNADY, C.J.H., JOUBERT, P. & STOWE, C.W. 1985. Proterozoic crustal evolution in southwestern Africa. Episodes, 8, 236-244.
12. HOLMES, A. 1951. The sequence of pre-Cambrian orogenic belts in south and central Africa. 18th International Geological Congress London (1948), 14, 254-69.
13. JACOBS, J. & THOMAS, R.J. 1994. Oblique collision at 1.1 Ga along the southern margin of the Kaapvaal continent, SE Africa. Geologische Rundschau, 83, 322-333.
14. _, HEJL, E., WAGNER, G.A. & WEBER, K. 1992. Apatite fission track evidence for contrasting thermal and uplift histories of metamorphic basement blocks in western Dronning Maud Land. In: YOSHIDA, Y., KAMINUMA, K. & SHIRAISHI, K. (eds) Recent Progress in Antarctic Earth Science, 323-330.
15. _, J., THOMAS, R.J. & WEBER, K. 1993a. Accretion and indentation tectonics at the southern edge of the Kaapvaal craton during the Kibaran (Grenville) orogeny. Geology, 21, 203-206.
16. _, J., HEJL, E., VAN DEN HAUTE, P. & WAGNER, G.A. 1993b. A preliminary tectono-thermal model for the KTB deduced from apatite, zircon and sphene fission-track analysis. KTB-Reports, 2/93, 125-128.
17. 39Ar and apatite fission track evidence for Neoproterozoic and Mesozoic basement rejuvenation events in the Heimefrontfjella and Mannfallknausane (East Antarctica). Precambrian Research, 75, 251-262.
18. _, J., THOMAS, R.J., FALTER, M., JESSBERGER, E. 1995b. Ar-Ar. K-Ar and sphene fission track evidence for the late-to post-tectonic structural and thermal history of the Natal Metamorphic Province. SE Africa. Extended abstract, Centennial Geocongress 1995, Johannesburg, 382-385.
19. KENNEDY, W.Q. 1964. The structural differentiation of Africa in the Pan-African (500 m.y.) tectonic episode. Research Institute of African Geology, 8th Annual Report, University of Leeds, 48-49.
20. MARSHALL, J. 1994. The Falkland Islands: a key element in Gondwana palaeogeography. Tectonics, 13, 499-514.
21. MARTIN, A.K. & HARTNADY, C.J.H. 1986. Plate tectonic development of the southwest Indian Ocean: a revised reconstruction of East Antarctica and Africa. Journal of Geophysical Research, 91, 4767-4786.
22. MILLER, R. MCG. 1983. The Pan-African Damara Orogen of South West Africa/Namibia, Special Publications of the Geolological Society of South Africa, 11, 431-515.
23. MITCHELL, C., TAYLOR, G.K., COX, K.G. & SHAW, J. 1986. Are the Falkland Islands a rotated microplate? Nature, 304, 131-134.
24. MOYES, A.B., BARTON, J.M. & GROENEWALD, P.B. 1993a. Late Proterozoic to Early Palaeozoic tectonism in Dronning Maud Land, Antarctica: supercontinent fragmentation and amalgamation. Journal of the Geological Society, London, 150, 833-842.
25. _, GROENEWALD, P.B. & BROWN, R.W. 1993b. Isotopic constraints on the age and origin of the Brattskarvetintrusive suite. Dronning Maud Land, Antarctica. Chemical Geology (Isotope Geoscience Section), 106, 453-466.
26. PINNA, P. 1995. On the dual nature of the Mozambique Belt. Mozambique to Kenya. Journal of African Earth Science, 21, 477-480.
27. _, JOURDE, G., CALVEZ, J.Y., MROZ, J.P. & MARQUES, J.M. 1993. The Mozambique Belt in northern Mozambique: Neoproterozoic (1100-850 Ma) crustal growth and tectogenesis, and superimposed Pan-African (800-550 Ma) tectonism. Precambrian Research, 62, 1-59.
28. POHL, W. 1994. Metallogeny of the northeastern Kibara belt. Central Africa-Recent perspectives. Ore Geology Reviews, 9, 105-130.
29. REX, D.C. & TANNER, P.W.G. 1982. Precambrian ages for gneisses at Cape Meredith in the Falkland Islands. In: Cradock, C. (ed.) Antarctic Geoscience. University of Wisconsin Press, 107-110.
30. SACCHI, R., MARQUES, J., COSTA, M. & CASATI, C. 1984. Kibaran events in the southernmost Mozambique belt. Precambrian Research, 25, 141-159.
31. SHIRAISHI, K., ELLIS, D.J., HIROI, Y., FANNING, C.M. MOTOYOSHI, Y. & NAKAI, Y. 1994. Cambrian orogenic belt in East Antarctica and Sri Lanka: implications for Gondwana assembly. Journal of Geology, 102, 47-65.
32. STÜWE, K. & SANDIFORD, M. 1993. A preliminary model for the 500 Ma event in the East Antarctic shield. In: FINDLAY, R.H. ET AL. (eds) Gondwana 8: assembly, evolution and dispersal. Balkema, Rotterdam, 125-130.
33. STERN, R.J. 1994. Arc assembly and continental collision in the Neoproterozoic E African Orogen: implication for the consolidation of Gondwanaland. Annual Review Earth and Planetary Science Letters, 22, 319-351.
34. THOMAS, R.J. 1989. A tale of tectonic terranes South African Journal of Geology, 92, 306-321.
35. _ & EGLINGTON, B.M., 1990. A Rb-Sr, Sm-Nd and U-Pb zircon isotopic study of the Mzumbe Suite, the oldest intrusive granitoid in southern Natal. South Africa. South African Journal of Geology, 93, 761-765.
36. _, MARSHALL, C.G.A. WATKEYS, M.K., FITCH, F. & MILLER, J.A. 1992. K-Ar and Ar-Ar dating of the Natal Group: a post Pan-African molasse? Journal of African Earth Science, 15, 453-471.
37. _, EGLINGTON, B.M. & BOWRING, S.A. 1993a. Dating the cessation of Kibaran magmatism in Natal. South Africa. Journal African Earth Science, 16, 247-252.
38. _, _, _, RETIEF, E.A. & WALRAVEN, F. 1993b. New isotope data from a Neoproterozoic porphyritic granitoid-charnockite suite from Natal, South Africa. Precambrian Research, 62, 83-101.
39. _, BUHMANN, D., BULLEN, W.D., SCOGINGS, A.J. & DE BRUIN, D. 1994. Unusual spodumene pegmatites from the Late Kibaran of southern Natal, South Africa. Ore Geology Review, 9, 161-182.
40. _, JACOBS, J. & WEBER, K. 1995. Preliminary results of an examination of the Mesoproterozoic Cape Meredith Complex, West Falkland. Extended abstract, Centennial Geocongress 1995, Johannesburg, 414-417.
41. WAGNER, G.A. & VAN DEN HAUTE, P. 1992. Fission track dating. Enke.
42. WEMMER, K. 1991. K/Ar-Altersdatierungsmöglichkeiten für retrograde Deformationsprozesse im spröden und duktilen Bereich -Beispiele aus der KTB-Vorbohrung (Oberpfalz) und dem Bereich der Insubrischen Linie (N-Italien). Göttinger Arbeiten zur Geologie und Paläontologie, 51.
43. WILLIAMS, G.E. 1995. Resonance of the fluid core for a tidally decelerating Earth: cause of increased plume activity and tectonothermal reworking events? Earth and Planetary Science Letters, 128, 155-167.