A gargantuan asteroid which struck Australia more than 300million years ago changed the face of the Earth forever, a new study claims. The six-mile diameter asteroid left an impact zone more than 120 miles wide – the third largest such site on the planet – and likely led to mass extinctions worldwide.
‘The dust and greenhouse gases released from the crater, the seismic shock and the initial fireball would have incinerated large parts of the Earth,’ said Andrew Glikson, visiting fellow at the Australian National University. He added: ‘The greenhouse gases would stay in the atmosphere for tens of thousands of years.’
Evidence of the ancient catastrophe was only discovered after another researcher alerted Dr Glikson to unusual mineral deposits in the East Warburton Basin in South Australia. As the ages have passed, the mammoth impact zone has been buried beneath nearly 2.5 miles of earth…
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