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The palaeomagnetism of the main zone of the eastern Bushveld Complex

Authors
Journal
Tectonophysics
0040-1951
Publisher
Elsevier
Publication Date
Volume
124
Identifiers
DOI: 10.1016/0040-1951(86)90205-2
Disciplines
  • Earth Science

Abstract

Abstract Palaeomagnetic data were acquired from eighteen sampling sites situated in the main zone of the eastern Bushveld Complex, Transvaal, South Africa. Specimens were subjected to alternating field and thermal demagnetization. Two mean magnetization directions, which are approximately antipodal, were found. One direction represents subzone B of the main zone in the eastern Bushveld Complex and yields a palaeomagnetic pole at 17.3° 35.7°E . The second direction represents subzone C of the main zone in the eastern Bushveld Complex with virtual geomagnetic pole at 28°S 161.7°W . The positions of these poles on the apparent polar wander path (APW) for Africa indicate that the critical zone had acquired its remanent magnetization before the main zone. Fold tests prove that the main zone in the eastern Bushveld Complex had acquired its remanent magnetization with the igneous layering in a horizontal position.

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