Journal article
Three-dimensional inversion modelling of a Neoproterozoic basin in the southern Prince Charles Mountains, East Antarctica
MA McLean, TJ Rawling, PG Betts, G Phillips, CJL Wilson
Tectonophysics | Published : 2008
Abstract
Three-dimensional inversion modelling of airborne magnetic data acquired in the Prince Charles Mountains, East Antarctica, provides an insight into the sub-ice distribution, and three-dimensional geometry of a Neoproterozoic sedimentary basin. A three-dimensional starting model was created from two two-dimensional GM-SYS modelling and our current geological understanding of the study area. Three-dimensional VPmg inversion modelling was performed on the aeromagnetic data to obtain an acceptable fit between the observed response collected in the field, and the calculated response of the three-dimensional model. Modelling suggests that the base of the basin undulates and is relatively unstructu..
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Funding Acknowledgements
This expedition was funded by the BGR (Bundesanstalt fur Geowissenschaften and Rohstoffe) and the Australian Antarctic Division. Detlef Damaske and Steven Boger are thanked for their helpful guidance and discussions during the development of this paper. Constructive reviews by two anonymous reviewers improved the manuscript and are greatly appreciated. Glenn Pears and Robert Smith are thanked for open discussions concerning inversion of the three-dimensional model. The Fugro team, Wayne Hewison and Allen Hudson are acknowledged for undertaking the acquisition of magnetic data and Stuart Baron-Hay for the processing of the magnetic data. We would like to acknowledge our flight crew from Kenn Borek Air Ltd. (Scott Lippa, Trevor Popovich and Kevin Kimpe), all those involved in field support at Mawson, Davis and the traverse team at Mt Cresswell.