Journal article
Basement interpretations from airborne magnetic and gravity data over the lambert rift region of east Antarctica
MA McLean, CJL Wilson, SD Boger, PG Betts, TJ Rawling, D Damaske
Journal of Geophysical Research Solid Earth | Published : 2009
DOI: 10.1029/2008JB005650
Abstract
Geological exposures in the Lambert Rift region of East Antarctica comprise scattered coastal outcrops and inland nunataks sporadically protruding through the Antarctic ice sheet from Prydz Bay to the southernmost end of the Prince Charles Mountains. This study utilized airborne magnetic, gravity, and ice radar data to interpret the distribution and architecture of tectonic terranes that are largely buried beneath the thick ice sheet. Free-air and Bouguer gravity data are highly influenced by the subice and mantle topography, respectively. Gravity stripping facilitated the removal of the effect of ice and Moho, and the residual gravity data set thus obtained for the intermediate crustal leve..
View full abstractGrants
Awarded by AAS
Awarded by ARC
Funding Acknowledgements
The PCMEGA expedition was funded by the Bundesanstalt fur Geowissenschaften und Rohstoffe (BGR) of Germany and the Australian Antarctic Division, who also provided research support with AAS grants 1215, 2561 and ARC DP 0343406. Constructive reviews by Howard Stagg and an anonymous reviewer improved the manuscript and are greatly appreciated. Robert Smith is thanked for his helpful guidance and discussions during the development of this paper. Wayne Hewison and Allen Hudson at Fugro 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 and Davis stations and the traverse team at Mount Cresswell.