Mineralogy and Petrology

, Volume 107, Issue 5, pp 679–707 | Cite as

Crustal age domains and metamorphic reworking of the deep crust in Northern-Central Tanzania: a U/Pb zircon and monazite age study

  • V. Tenczer
  • Ch. Hauzenberger
  • H. Fritz
  • G. Hoinkes
  • S. Muhongo
  • U. Klötzli
Special Issue Gondwana Collision


Geochronological data are presented from Northern Tanzania, where deep-crustal terranes of different age are exposed. Stacking of these terranes was diachronous with one peak around 640 Ma, defined as East African Orogeny, and final consolidation at 550–580 Ma, that is defined as Kuunga Orogeny. This later event is predominant in the Western Granulite Belt of northern Tanzania and related to thrusting onto the Tanzanian Craton. The Tanzania Craton itself experienced a polycyclic history; age domains around 2.64 Ga prevail in the studied samples. There is no evidence of the Paleoproterozoic Usagaran Belt in northern Tanzania. Here the gneisses contain relicts of reworked Archean basement and are therefore considered part of the Western Granulites. Inliers of the Western Granulites are also found in the cores of marble antiforms that are part of the upper, sedimentary sequence of the Eastern Granulites. Those inliers formed during the Kuungan orogenic phase when the Eastern Granulites have taken their final position and were folded together with the Western Granulites.



This paper was financially supported by the Austrian Science Foundation (FWF) Project Nr. T247-N10 and the Swedish Museum of Natural History (HIGHLAT) within the IHP Programme (HPRI-CT-2001-00125) funding the geochronological campaign using the SIMS. For analytical and methodical support at the SIMS M. Whitehouse is thanked. For analytical and support and data reduction using LA-ICP-MS J. Kosler is thanked.


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Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • V. Tenczer
    • 1
  • Ch. Hauzenberger
    • 1
  • H. Fritz
    • 1
  • G. Hoinkes
    • 1
  • S. Muhongo
    • 2
  • U. Klötzli
    • 3
  1. 1.Department of Earth SciencesUniversity of GrazGrazAustria
  2. 2.University of Dar es SalaamDar es SalaamTanzania
  3. 3.Department of Lithospheric ResarchUniversity of ViennaViennaAustria

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