The world’s oldest asteroid strike in Western Australia may have triggered a global thaw
by The Conversation from Science | The Guardian on (#4Y86M)
A new study showing the 70km-wide Yarrabubba crater dates impact to 2.29bn years ago
The world's oldest remaining asteroid crater is at a place called Yarrabubba, south-east of the town of Meekatharra in Western Australia.
Our new study puts a precise age on the cataclysmic impact - showing Yarrabubba is the oldest known crater and dating it at the right time to trigger the end of an ancient glacial period and the warming of the entire planet.
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