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really bad day 66 million years ago

The effect of the Chicxulub asteroidal impact on our world was like the Blues Bros tribute to throwing rubber biscuits at walls. "If it don't bounce back, you go hungry, boww - boww - boww."

 

And if your species was not small, non-specialized and widespread, you go extinct. Beneath the globe-spanning iridium-bearing clay layer is 186 million years worth of dinosaurian reign. Above the thin white line is 66 million years of animal, mammalian, avian and insecta diversification. Former Cretaceous-Tertiary or KT boundary has been renamed K-Pg for Cretaceous-Paleogene boundary.

 

The KT boundary panel from southern Alberta, Canada on display in the Royal Tyrrell Museum. The clay boundary line from the day the world collapsed has become our planet's most compelling message of unpredictable and unstoppable catastrophe. The KT impact layer is the latest and, by far, the most visible marker out of the ten known global scale mass extinctions found in Earth's rock record.

 

Here's a link to my pix of the much older Sudbury impact event

www.flickr.com/photos/31856336@N03/8031545102/

 

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Uploaded on October 17, 2010
Taken in October 2010