Mapping Earth’s deep crustal source of Victoria’s gold deposits: a new paper published in Nature’s Scientific Reports
Congratulations to Professor Graham Heinson, Director of the Mawson Geo Centre and Deputy Director of IMER, who has had a new paper published in the prestigious Nature's Scientific Reports entitled "Lower crustal resistivity signature of an orogenic gold system".
Orogenic gold deposits provide a significant source of the world’s gold and form along faults over a wide range of crustal depths spanning sub-greenschist to granulite grade faces, but the source depths of the gold remains poorly understood. In this paper we compiled thirty years of long-period magnetotelluric (MT) and geomagnetic depth sounding (GDS) data across western Victoria and south-eastern South Australia that have sensitivity to the electrical resistivity of the crust and mantle, which in turn depend on past thermal and fluid processes. Read more