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Ancient oceans were rich in gold: scientists
Australian researchers have struck gold, formulating a new technique to measure how much of the precious metal existed in the world\'s oceans over the past 3.5 billion years. Geologists from the University of Tasmania\'s ARC Centre of Excellence in Ore Deposits (CODES) have developed a \"time curve series\" to show the variation of gold concentration in the ocean over that enormous length of time, reports Xinhua.
Melbourne: Australian researchers have struck gold, formulating a new technique to measure how much of the precious metal existed in the world's oceans over the past 3.5 billion years. Geologists from the University of Tasmania's ARC Centre of Excellence in Ore Deposits (CODES) have developed a "time curve series" to show the variation of gold concentration in the ocean over that enormous length of time, reports Xinhua.
The CODES data indicated that at one stage, three billion years ago, the ancient ocean carried 2,000 times more gold than the world's biggest gold bullion depository at Fort Knox, Kentucky, in the US. CODES director Professor Ross Large explained why the ocean was awash with gold during this period: "This was a time when the world's greatest gold ore deposits were formed in South Africa in the Witwatersrand Basin.”
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The researchers believe the proportion of gold generated in the shallow crust of the earth indirectly affected the concentration of element found in the ocean. "This means peak times of gold in the oceans correspond to the best times in Earth's history for gold ore formation," Large said.
