Sediment-hosted Zn–Pb–Cu deposits in the Central African Copperbelt

Kampunzu, A.B.; Cailteux, J.; Kamona, A.F.; Intiomale, M.M.; Melcher, Frank

doi:10.1016/j.oregeorev.2009.02.003

Cited by 89 publications

(73 citation statements)

References 106 publications

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“…The Katanga Supergroup succession and its structural features suggest events similar to those in the Damara Orogen (Porada and Berhorst 2000;Selley et al 2005;Cailteux et al 2007;Batumike et al 2007;Kampunzu et al 2009;Master and Wendorff 2011). Northeast-to northwest-directed folding and thrusting (Coward and Daly 1984;Daly 1986) produced the four arcuate tectonostratigraphic zones of the Lufilian Arc, namely, the Katangan High, Synclinorial Belt, Domes Region and External Fold and Thrust Belt (Fig.…”

Section: Lufilian Arcmentioning

confidence: 92%

“…This may have developed during rather passive slumping, but the solution and remobilization of evaporites in the formation could also be a cause of the fragmentation (Hedberg 1979). The Gruis and Gauss Formations have few stromatolites, suggesting rather deep water dep- Hedberg (1979), Miller (1983a, 2008, Porada and Berhorst (2000), Cailteux et al (2005aCailteux et al ( , 2007, Hoffman and Halverson (2008), Kampunzu et al (2009) and in part from Selley et al (2005 (Hedberg 1979). The uppermost formation in the Otavi Mountainland, the Auros Formation, consists, where fully developed, of four cycles of brown shale and dolomitic or calcareous grainstone, with oolitic layers towards the top of the formation.…”

Section: Evolution From Rifting To Spreadingmentioning

confidence: 98%

“…The Nosib succession in the Northern Platform fines upwards and becomes highly ferrugi- Miller (1983a, Hoffmann and Prave (1996), and Hoffman and Halverson (2008). Katangan nomenclature is from Porada and Berhorst (2000), Cailteux et al (2007), Batumika et al (2007), Kampunzu et al (2009) and in part from Selley et al (2005 (Hedberg 1979). Thick, local peralkaline ignimbrites (Naauwpoort Formation), some with associated subvolcanic alkaline intrusions, occur at the top of the group just south of the southern edge of the Northern Margin Zone (Frets 1969;Miller , 1983a ( Fig.…”

Section: Intracontinental Riftingmentioning

confidence: 99%

“…A positively weathering, tan-coloured cap dolostone, the Keilberg Member (Hoffmann and Prave 1996), is a characteristic and widespread marker horizon at the base of the formation. Mass flows with intraformational clasts occur in places (King 1990 Hedberg (1979), Miller (1983a, 2008, Porada and Berhorst (2000), Batumika et al (2007), Hoffman and Halverson (2008), Kampunzu et al (2009) and in part from . .…”

Section: Evolution From Rifting To Spreadingmentioning

confidence: 99%

“…The resulting basin was probably rather narrow and Red Sea-like, and was floored by oceanic crust that became the source of later syntectonic, Hedberg (1979), Miller (1983a, 2008, Porada and Berhorst (2000), Wendorff (2003, 2011), Batumika et al (2007, Hoffman and Halverson (2008), Kampunzu et al (2009) Alpine-type serpentinites (Barnes 1982). The basin was swamped by pelitic greywackes of the Kuiseb Formation, much like the Gulf of California, and had a mid-ocean ridge that produced the mid-ocean-ridge basalts and gabbros and Besshi-type cupreous pyrite deposits of the Matchless Amphibolite Member (Goldberg 1976;Killick 1983Killick , 2000Miller 1983b;Breitkopf 1989).…”

Section: Continental Rupturementioning

confidence: 99%

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Comparative Stratigraphic and Geochronological Evolution of the Northern Damara Supergroup in Namibia and the Katanga Supergroup in the Lufilian Arc of Central Africa

Miller

2013

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The Damara Supergroup in Namibia and the Katanga Supergroup in the Central African Copperbelt (some 1000 km apart) are characterized by rock successions indicative of almost coeval orogenic evolution through phases of intracontinental rifting, spreading, continental rupture, subduction, ocean closure and continental collision in what appears to have been a single, elongate orogenic belt. Rifting began at about 880 Ma and lasted until about 800 or 756 Ma. Post-rift thermal sag and marine transgression produced the first correlatable stratigraphic units, the argillaceous Beesvlakte and Ore Shale Formations, in northern, carbonate-dominated platformal successions on the Damaran Northern Platform and the Katangan Lufilian Arc or Fold Belt, respectively. Sturtian (~735 Ma) and Marinoan (635 Ma) glacial units are common to both successions as well as syntectonic molasse sequences (~595–550 Ma). Continental collision occurred at about 542 Ma and the post-tectonic peak of regional metamorphism was at about 535–530 Ma. Mineral ages record cooling to about 460 Ma. The extensive occurrence of stratabound, but not stratiform, copper mineralization, evaporitic minerals, salt and thrust tectonics, syntectonic breccias, and intense alteration in the Lufilian Arc have no significant equivalents in the Northern Platform. However, the Beesvlakte Formation has both concordant and strongly discordant styles of copper mineralization and the mode of occurrence of mineralization in the Copperbelt can be a guide to exploration in Namibia.SOMMAIRELe Supergroupe de Damara en Namibie et le Supergroupe de Katanga de la bande cuprifère d’Afrique centrale (distant de 1 000 km) sont caractérisés par des successions de roches montrant une évolution orogénique presque contemporaines dans leurs phases de distension intracontinentale, d’expansion, de rupture continentale, de subduction, de fermeture océanique et de collision continentale, dans ce qui semble avoir été une seule et même bande orogénique étroite. La distension a débutée il y a environ 880 Ma et s’est prolongé jusqu’à 800 Ma ou 756 Ma. Le fléchissement thermique post-distension et la transgression marine ont donné les premières unités stratigraphiques corrélables, soit la Formation argileuse de Beesvlakte et la Formation de Ore Shale, de la portion nord des successions de plateforme principalement carbonatées sur la Plateforme nord de Damaran et de l’Arc ou de la bande plissée de Katangan Lufilian respectivement. Les unités glaciaires de Sturtian (~735 Ma) et de Marinoan (635 Ma) sont communes aux deux successions, tout comme les séquences de molasses syntectoniques (~595–550 Ma). La collision continentale s’est produite il y a environ 542 Ma et le pic post-tectonique de métamorphisme régional a eu lieu il y a environ 535 à 530 Ma. Selon les datations minérales, le refroidissement s’est produit il y a environ 460 Ma. La prépondérance du contexte stratoïde plutôt que stratiforme des minéralisations de cuivre, des minéraux d’évaporites, de sel et de tectonique de compression, de brèches syntectoniques, et d’altération intense dans l’Arc de Lufilian, n’a pas d’équivalent dans la plateforme du nord. Cependant, la Formation de Beesvlakte présente des minéralisations de cuivre qui sont ou concordantes, ou fortement discordantes, et le mode d’occurrence de la minéralisation dans le bande cuprifère peut servir de guide à l’exploration en Namibie.

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