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UWA geologist’s new dating procedure

THE precise age of some of the world’s greatest iron ore reserves, found in the Hamersley region of Western Australia, has previously eluded geologists, but new dating procedures being tested by University of WA geologist Stefan Muller, of the School of Earth and Geographical Sciences, are now providing reliable ages.A comparison of the Hamersley deposit with similar iron ore deposits on other continents suggests that a global oxidation event affecting iron-rich rocks occurred about two billion years ago.

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