State of the Arc: Long-Wavelength Geophysics and Macquarie Arc Basement

ASEG webinar presented by the NSW branch

Title: State of the Arc: Long-Wavelength Geophysics and Macquarie Arc Basement
Presenter: Bob Musgrave, Geological Survey of NSW

Abstract:
The Ordovician Macquarie Arc is the host of world-class Cu-Au mineralisation. But what lies beneath: sea-floor, thinned continent, or an older arc? Long-wavelength magnetic, gravity, MT and seismic features are the key to reconciling tectonic models, geochemistry, and geochronology of the arc.