SHRIMP zircon age constraints on Mesoarchean crustal development in the Vredefort dome, central Kaapvaal Craton, South Africa

Richard A. Armstrong; Cristiano Lana; Wolf Uwe Reimold; Roger L. Gibson

doi:10.1130/2006.2405(13)

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SHRIMP zircon age constraints on Mesoarchean crustal development in the Vredefort dome, central Kaapvaal Craton, South Africa

Author(s)

Richard A. Armstrong

Research School of Earth Sciences, The Australian National University, Canberra 0200, A.C.T., Australia

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Cristiano Lana

Impact Cratering Research Group, School of Geosciences, University of the Witwatersrand, Private Bag 3, 2050 Wits, Johannesburg, South Africa

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Wolf Uwe Reimold

Impact Cratering Research Group, School of Geosciences, University of the Witwatersrand, Private Bag 3, 2050 Wits, Johannesburg, South Africa, and Museum für Naturkunde (Mineralogy), Humboldt University, Invalidenstrasse 43, 10115 Berlin, Germany

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Roger L. Gibson

Impact Cratering Research Group, School of Geosciences, University of the Witwatersrand, Private Bag 3, P.O. Wits 2050, Johannesburg, South Africa

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Doi:

https://doi.org/10.1130/2006.2405(13)

Published:

January 01, 2006

SHRIMP (sensitive high-resolution ion microprobe) U-Pb zircon dating of the Archean basement rocks in the core of the Vredefort dome, South Africa, is integrated with results of lithological and structural mapping and geochemical data to assess the tectonic evolution of the central parts of the Kaapvaal Craton. Recent tectonic models have envisaged the rocks in the core of the dome as part of a much larger, >3200 Ma, Archean cratonic shield (Kaapvaal Shield) that attained stability during partial melting of its early crust and emplacement of voluminous, Mesoarchean, crustally derived granitoid bodies between 3200 and 3100 Ma. Our studies have...

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SHRIMP zircon age constraints on Mesoarchean crustal development in the Vredefort dome, central Kaapvaal Craton, South Africa

Figures & Tables

Contents

Processes on the Early Earth

GeoRef

References

Related

Citing Books via

SHRIMP zircon age constraints on Mesoarchean crustal development in the Vredefort dome, central Kaapvaal Craton, South Africa

Figures & Tables

Contents

Processes on the Early Earth

GeoRef

References

Related

Citing Books via

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