For more than a century geologists had debated the source of the Witwatersrand ore deposit in South Africa.
Until recently, there were two camps debating the ore deposit origin: the “placerists” and “hydrothermalists”. Strangely, the latest research suggests both camps had it correct, with it appearing the ore deposit was shaped by two major geological effects.
The deposit has produced more than 40,000 tonnes of gold since its discovery in 1884.
Read more at University of Tasmania