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Earth’s Oldest Asteroid Impact Found in Australia - The New York Times
The cataclysm, which occurred roughly 2.2 billion years ago, might have catapulted the planet out of an ice age.
Researchers reported on Tuesday in Nature Communications that they have pinpointed it, in Western Australia. It was caused by an impact more than 2.2 billion years ago.
Intriguingly, that timing roughly coincides with the end of one of our planet’s ice ages. An impact in the ice would have liberated an enormous amount of water vapor, the researchers suggest, perhaps enough to alter Earth’s climate and catapult the planet out of widespread glaciation.
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The Yarrabubba impact structure, about a day’s drive northeast of Perth, isn’t much to look at today. The original crater, believed to have been roughly 40 miles in diameter, is long gone.
As a side note, a relative used to work for a Government intelligence branch that had linguists fluent in just about every language on Earth. He admitted that they had no one fluent in the S African 'click' languages. I wonder if they have anyone fluent in Australian aboriginal languages, which likely has a number of regional dialects.
Khoisan
There are two groups of languages in southern Africa that have clicks: the Khoisan languages and certain languages of the Niger-Congo family, most notably Zulu and Xhosa. The Khoisan languages have had clicks in them from time immemorial, and their speakers have always been in the southern part of Africa.Oct 31, 2013
african click languages - Google Search
The cataclysm, which occurred roughly 2.2 billion years ago, might have catapulted the planet out of an ice age.
Researchers reported on Tuesday in Nature Communications that they have pinpointed it, in Western Australia. It was caused by an impact more than 2.2 billion years ago.
Intriguingly, that timing roughly coincides with the end of one of our planet’s ice ages. An impact in the ice would have liberated an enormous amount of water vapor, the researchers suggest, perhaps enough to alter Earth’s climate and catapult the planet out of widespread glaciation.
========================================================================================
The Yarrabubba impact structure, about a day’s drive northeast of Perth, isn’t much to look at today. The original crater, believed to have been roughly 40 miles in diameter, is long gone.
As a side note, a relative used to work for a Government intelligence branch that had linguists fluent in just about every language on Earth. He admitted that they had no one fluent in the S African 'click' languages. I wonder if they have anyone fluent in Australian aboriginal languages, which likely has a number of regional dialects.
Khoisan
There are two groups of languages in southern Africa that have clicks: the Khoisan languages and certain languages of the Niger-Congo family, most notably Zulu and Xhosa. The Khoisan languages have had clicks in them from time immemorial, and their speakers have always been in the southern part of Africa.Oct 31, 2013
african click languages - Google Search
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