Ancient heat emergence of the mantle could explain first gold record under South America

Friday, 20 de October
  • A new study published in Nature Communications brings new insights into the formation of gold deposits

The team, led by researchers from University of Chile in Santiago and collaborators from Spain, Australia and France, looked at the world’s southernmost gold province in Patagonia for clues on the origin of gold deposits.

The study looked at mantle fragments or xenoliths erupted from volcanoes in the Deseado Massif in Argentina, where several types of epithermal gold and silver deposits of Jurassic age occur in a ~60.000 km2 region. This extensive volcanism occurred ~3.5 Ma has brought to the surface deep-seated mantle xenoliths from beneath the crust that host the Au mineralization.