Paleomagnetism of Cenozoic hotspot volcanic rocks in eastern Australia

Jeroen Hansma

Research output: ThesisDoctoral Thesis

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Abstract

97 new paleomagnetic sites from the Cosgrove hotspot track in eastern Australia are presented, along with a synthesis of existing paleomagnetic data for Australia during the Cenozoic. This dataset was used to update Australia's apparent polar wander path for this interval, indicating northward acceleration after Eocene-Oligocene consistent with seafloor spreading models. The many, partially overlapping magnetization ages among paleomagnetic studies presented an opportunity to develop a more systematic method for combining virtual geomagnetic poles. Reconstruction of paleolatitudes for eastern Australian hotspots indicate significant motion with respect to the geocentric axial dipole, consistent with true polar wander estimates over this interval.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • The University of Western Australia
Thesis sponsors
Award date21 Nov 2019
DOIs
Publication statusUnpublished - 2019

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