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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.