Vaalbara palaeomagnetism

Vaalbara is the name given to a proposed configuration of continental blocks - the Kaapvaal craton (southern Africa) and the Pilbara craton (north-western Australia) - thought to be the Earth's oldest supercraton assemblage. Its temporal history is poorly defined, but it has been suggested that...

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Bibliographic Details
Published inCanadian journal of earth sciences Vol. 56; no. 9; pp. 912 - 916
Main Authors Evans, Michael E, Muxworthy, Adrian R
Format Journal Article
LanguageEnglish
Published Ottawa National Research Council of Canada 01.09.2019
NRC Research Press
Canadian Science Publishing NRC Research Press
Subjects
Africa
Archean
Australasia
Australia
Botswana
chronology
Configurations
Cratons
Derdepoort Basalt
Earth
Earth science
Geochronology
Geophysics
History
Kaapvaal Craton
Magnetism
Modipe Gabbro
North-West Province South Africa
Palaeomagnetism
paleogeography
paleolatitude
Paleomagnetism
Pilbara Craton
Precambrian
solid Earth (tectonophysics)
South Africa
Southern Africa
Strangway, Davis W
Studies
tectonics
tilt
Vaalbara
Western Australia
Australia
Africa
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Summary:Vaalbara is the name given to a proposed configuration of continental blocks - the Kaapvaal craton (southern Africa) and the Pilbara craton (north-western Australia) - thought to be the Earth's oldest supercraton assemblage. Its temporal history is poorly defined, but it has been suggested that it was stable for at least 400 million years, between 3.1 and 2.7 Ga. Here, we present an updated analysis that shows that the existence of a single supercraton between ∼2.9 and ∼2.7 Ga is inconsistent with the available palaeomagnetic data.
ISSN:0008-4077
1480-3313
DOI:10.1139/cjes-2018-0081