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Evolution of the African continental crust as recorded by U-Pb, Lu-Hf and O isotopes in detrital zircons from modern rivers

Iizuka, Tsuyoshi; Campbell, Ian; Allen, Charlotte M; Gill, James; Maruyama, Shigenori; Makoka, Frederic

Description

To better understand the evolutionary history of the African continental crust, a combined U-Pb, Lu-Hf and O isotopic study has been carried out by in situ analyses of approximately 450 detrital zircon grains from the Niger, Nile, Congo, Zambezi and Orange Rivers. The U-Pb isotopic data show age peaks at ca. 2.7, 2.1-1.8, 1.2-1.0, ca. 0.8, 0.7-0.5 and ca. 0.3Ga. These peaks, with the exception of the one at ca. 0.8Ga, correspond with the assembly of supercontinents. Furthermore, the detrital...[Show more]

CollectionsANU Research Publications
Date published: 2013
Type: Journal article
URI: http://hdl.handle.net/1885/70826
Source: Geochimica et Cosmochimica Acta
DOI: 10.1016/j.gca.2012.12.028

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