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Watch Ross Large’s Distinguished Lecture

Relationship between Oxygenation and Ore Deposit Cycles through Earth History

We wish to thank the University of Adelaide and Ross Large for the ability to share the content.

Geoscience Society Distinguished Lecture Series with Ross Large, Distinguished Professor of Economic Geology, UTAS.

Professor Ross Large gained his PhD from the University of NSW in 1973 and then spent nearly ten years as an exploration geologist for Geopeko exploring parts of the NT and Queensland. In 1984 he joined the University of Tasmania based in Hobart and from 1990 to 2012 headed up the Centre for Ore Deposit Studies (CODES). This grew to a staff of 40 academics with an annual $11m budget.

On May 22, Ross gave a lecture on “Relationship between Oxygenation and Ore Deposit Cycles through Earth History” at the University of Adelaide. This was a joint Student SEG/AusIMM event with 37 in attendance.

Ross Large summarised the Earth cycles and linked the major ore deposit types to these cycles. It is interesting to see the lack of Au, VHMS, iron ore and copper deposits between 1.8Ga and 0.8Ga, yet the abundance of Pb-Zn-Ag and uranium deposits. There was some lively discussion at the end about the uniformity of oceans (pH, oxygenation etc.) in the past and the ability to draw major inferences. Ross finished the lecture with a plea for all especially students to try and think for themselves and avoid “Group Think”.

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