Did Bushmanland extensionally unroof Namaqualand?

Precambrian Research

Volumn 150, Issue 3-4, 2006, Pages 173-182

  Dewey, John F ^a,b,c,d   Robb, Laurence ^b,d   Van Schalkwyk, Louw ^e  

^a UNIVERSITY OF CALIFORNIA   (United States)

^b UNIVERSITY OF OXFORD   (United Kingdom)

^c IMPERIAL COLLEGE LONDON   (United Kingdom)

^d UNIVERSITY OF THE WITWATERSRAND   (South Africa)

^e Anglo American Mining Corporation   (South Africa)

Author keywords

Giant core complex; Namaqualand; Transtension; UHT metamorphism

Indexed keywords

AMPHIBOLITE FACIES; ARCHEAN; CRATON; GRANULITE FACIES; HERCYNITE; OROGENIC BELT; OROGENY; RODINIA; SAPPHIRINE; TRANSTENSION; ULTRAHIGH TEMPERATURE METAMORPHISM;

AFRICA; NAMAQUALAND; NAMIBIA; SOUTHERN AFRICA; SUB-SAHARAN AFRICA;

EID: 33749593937     PISSN: 03019268     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.precamres.2006.07.007     Document Type: Article

References (47)

1. Armstrong R.A. Low-angle (denudation) faults, hinterland of the Sevier orogenic belt, eastern Nevada and western Utah. Geol. Soc. Am. Bull. 83 (1972) 1729-1754
2. Bailie, R.H., Armstrong, R.A., Reid, D.L. Geochronology of the metalliferous Bushmanland Group metasediments, Namaqualand, South Africa. J. Geol. Soc. S. Afr., in press-a.
3. Bailie, R.H., Armstrong, R.A., Reid, D.L. Geochronology of Bushmanland granitoid orthogneisses, Namaqualand, South Africa. J. Geol. Soc. S. Afr., in press-b.
4. Blignault H.J., Van Aswegen G., Van Der Merwe S.W., and Colliston W.P. The Namaqualand geotraverse and environs: part of the Proterozoic Namaqua Mobile Belt. Special Publication Geological Society of South Africa 10 (1983) 1-29
5. Brown M., and Raith M. First evidence of ultra-high temperature decompression from the granulite province of southern India. J. Geol. Soc. Lond. 153 (1996) 819-822
6. Clifford T.N., Barton E., Stern R.A., and Duchesne J.-C. U-Pb zircon calendar for Namaquan (Grenville) crustal events in the granulite-facies terrane of the O'okiep Copper District of South Africa. J. Petrol. 45 (2004) 669-691
7. Cox K.G. A model for flood basalt volcanism. J. Petrol. 21 (1980) 629-650
8. Cox K.G. Continental magmatic underplating. Phil. Trans. R. Soc. 342 (1993) 155-166
9. Cull J.P., O'Reilly S.Y., and Griffin W.L. Xenolith geotherms and crustal models in eastern Australia. Tectonophysics 192 (1991) 359-366
10. Davis W.J. U-Pb zircon and rutile ages from granulite xenoliths in the Slave province: evidence for mafic magmatism in the lower crust coincident with Proterozoic dike swarms. Geology 25 (1997) 343-346
11. Dewey J.F. Transtension in arcs and orogens. Int. Geol. Rev. 44 (2002) 402-439
12. Dewey, J.F. The secular evolution of tectonics and the continental crust: an outline. In: Hatcher, R.D. (Ed.), Geol. Soc. Am. Mem., Proceedings of Eighth International Basement Tectonic Association Conference, Oak Ridge, in press.
13. Dewey J.F., and Mange M.A. Petrography of Ordovician and Silurian sediments in the Western Irish Caledonides: tracers of a short-lived continent-arc collision orogeny and the evolution of the Laurentian Appalachian/Caledonian margin. Geol. Soc. Lond. Spec. Publ. 164 (1999) 55-107
14. Dewey J.F., Ryan P.D., and Andersen T.B. Orogenic uplift and collapse, crustal thickness, fabrics and phase changes: the role of eclogites. Geol. Soc. Lond. Spec. Publ. 76 (1993) 325-343
15. England P.C., and Thompson A.B. Pressure-temperature-time paths of regional metamorphism. I. Heat transfer during the evolution of regions of thickened continental crust. J. Petrol. 25 (1984) 894-928
16. Frimmel H.E., Zartman R.E., and Spath A. The Richtersveld Igneous Complex, South Africa: U-Pb zircon and geochemical evidence for the beginning of Neoproterozoic continental breakup. J. Geol. 109 (2001) 493-508
17. Furlong K.P., and Fountain D.M. Continental crustal underplating: thermal considerations and seismic-petrologic consequences. J. Geophys. Res. 91 (1986) 8255-8294
18. Green R.W.E., and Durrheim R.J. A seismic refraction investigation of the Namaqualand metamorphic Complex, South Africa. J. Geophys. Res. 95 (1990) 19927-19932
19. Grunder A.L. Material and thermal roles of basalt in crustal magmatism: case study from eastern Nevada. Geology 23 (1995) 952-956
20. Harley S.L. Ultra-high temperature granulite metamorphism (1050 °C, 12 kbar) and decompression in garnet (Mg70)-orthopyroxene-sillimanite gneisses from Rauer Group, East Antarctica. J. Met. Geol. 16 (1988) 541-562
21. Harley S.L., and Black L.P. The Archaean geological evolution of Enderby Land, Antarctica. Geol. Soc. Lond. Spec. Publ. 27 (1987) 285-296
22. Harley S.L., and Motoyoshi Y. Alumina-zoning in orthopyroxene in a sapphirine quartzite; evidence for >1,120 °C ultra-high temperature metamorphism in the Napier Complex, Enderbyland, Antarctica. Contrib. Mineral. Petrol. 138 (2000) 293-307
23. Harley S.L., Hensen B.J., and Sheraton J.W. Two stage decompression in orthopyroxene-sillimanite granulites from Forefinger Point, Enderby Land, Antarctica: implications for the evolution of the Archaean Napier Complex. J. Met. Geol. 8 (1990) 591-613
24. Harris N.R., Sisson V.B., Wright J.E., and Pavlis T.I. Evidence for Eocene mafic underplating during fore-arc intrusive activity, eastern Chugach Mountains, Alaska. Geology 24 (1996) 263-266
25. Joubert P. The regional tectonism of the gneisses of part of the Namaqualand Metamorphic Complex. Bulletin of the Precambrian Research Unit (1971), University of Cape Town 10 220 pp
26. Kisters A.F.M., Potgieter A.M., Charlesworth E.G., Anhaeusser C.R.J.E., Gibson R.L., and Watkeys M.K. Emplacement features of cupriferous noritoids in the Okiep Copper District, Namaqualand, South Africa. Explor. Mining Geol. 3 (1994) 297-310
27. Krabbendam M., and Dewey J.F. Exhumation of UHP rocks by transtension in the Western Gneiss Region, Scandinavian Caledonides. Geol. Soc. London Spec. Publ. 135 (1998) 159-181
28. McCarthy T.C., and Patino Douce A.E. Experimental evidence for high-temperature felsic melts formed during basaltic intrusion of the deep crust. Geology 25 (1997) 463-466
29. Mouri H., Andreoli M., Kienast J.R., Guiraud M., and de Waal S.A. First occurrence of the rare corundum + quartz assemblage in magnetite-bearing rocks from Namaqualand Metamorphic Complex, South Africa: evidence for higher-P/T metamorphism?. Min. Mag. 67 (2003) 1015-1021
30. Nowicki T.E., Frimmel H.E., and Waters D.J. The occurrence of osumilite in pelitic granulites of the Namaqualand Metamorphic Complex, South Africa. J. Geol. S. Afr. 98 (1995) 191-201
31. Odling N.E. Structural analysis and three-dimensional modeling at Gamsberg, N.W. Cape. University of Cape Town Precambrian Research Unit Bull. 34 (1987) 90 pp
32. Patchett P.J. Thermal effects of basalt on continental crust and crustal contamination of magmas. Nature 283 (1980) 559-561
33. Raith M., Karmakar S., and Brown M. Ultra-high temperature metamorphism and multistage decompressional evolution of sapphirine granulites from the Palni Hill Ranges, southern India. J. Met. Pet. 15 (1997) 1314-1525
34. Robb L.J., Armstrong R.A., and Waters D.J. The history of granulite-facies metamorphism and crustal growth from single zircon U-Pb geochronology: Namaqualand, South Africa. J. Petrol. 40 (1999) 1747-1770
35. Rudnick R.L., and Jackson I. Measured and calculated elastic wave speeds in partially equilibrated mafic granulite xenoliths: implications for the properties of an underplated lower continental crust. J. Geophys. Res. 100 (1995) 10211-10218
36. Sajeev K., and Osunai Y. Ultra-high temperature metamorphism (1150 °C, 12 kbar) and multistage evolution of Mg-, Al-rich granulites from the Central Highland Complex, Sri Lanka. J. Petrol. 45 (2004) 1821-1844
37. Sengupta P., Sen J., Dasgupta S., Raith M., Bhui U.k., and Ehl J. Ultra-high temperature metamorphism of metapelitic granulitesfrom Kondapalle, Eastern Ghats Belt: implications for the Indo-Antarctic correlation. J. Petrol. 40 (1999) 1065-1087
38. Suyehiro K., Takahashi N., Arie Y., Yokoi Y., Hino R., Shinohara N., Kanazawa T., Hirata N., Tokuyama H., and Taira A. Continental crust, crustal underplating, and low-Q upper mantle beneath an island arc. Science 272 (1996) 390-392
39. Thompson A.B., and England P.C. Pressure-temperature-time paths of regional metamorphism. II. Their inference and interpretation using mineral assemblages in metamorphic rocks. J. Petrol. 25 (1984) 929-955
40. Tilley C.E. Enderbite, a new member of the charnockite series. Geol. Mag. 73 (1936) 312-316
41. Vajner V. The tectonic development of the Namaqua Mobile Belt and its foreland in parts of the Northern Cape. University of Cape Town Precambrian Research Unit Bull. 14 (1974) 201 pp
42. Venkat-Ramani M., and Tikoff B. Physical models of transtensional folding. Geology 30 (2002) 523-526
43. Warren R.G., and Ellis D.J. Mantle underplating, granite tectonics, and metamorphic P-T-t paths. Geology 24 (1996) 663-666
44. Waters D.J. Metamorphic history of sapphirine-bearing and related magnesian gneisses from Namaqualand, South Africa. J. Petrol. 27 (1986) 541-565
45. Waters D.J. Metamorphic evidence for the heating and cooling path of Namaqualand granulites. Geol. Soc. Lond. Spec. Publ. 43 (1989) 357-363
46. Waters D.J. Hercynite-quartz granulites: phase relations, and implications for crustal processes. Eur. J. Mineral. 3 (1991) 367-368
47. Waters D.J. The significance of prograde and retrograde quartz-bearing intergrowth of microstructures in partially melted granulite-facies rocks. Lithos 56 (2001) 97-110