File:Thin white line = KT (now K-Pg) boundary (5090097984).jpg

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The effect of the Chicxulub impact crater on our world was like the Blues Bros tribute to throwing rubber biscuits at walls.

And if your species wasn't small, non-specialized and widespread, you go extinct. Below the globe-spanning iridium-bearing clay layer is 186 million years worth of dinosaurian reign. Above the clay is 65.5 million years of mammalian, avian and insecta diversification. Former Cretaceous-Tertiary or KT has now been renamed K-Pg for Cretaceous-Paleogene boundary.

Panel of the KT boundary from southern Alberta, Canada in the Royal Tyrrell Museum. This thin white line has become our planet's most compelling message of unpredictable unstoppable catastrophe.

Here's a link to Royal Tyrrell Museum's annotated image of this strat box www.flickr.com/photos/tyrrellmuseum/7096678239/

Here's a link to my pix of the much older Sudbury impact event captured in Proterozoic rocks

www.flickr.com/photos/31856336@N03/8031545102/
Date
Source thin white line = KT (now K-Pg) boundary
Author Mike Beauregard from Nunavut, Canada
Camera location51° 28′ 45.86″ N, 112° 47′ 19.44″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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This image was originally posted to Flickr by subarcticmike at https://www.flickr.com/photos/31856336@N03/5090097984. It was reviewed on 31 August 2014 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

31 August 2014

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current06:01, 31 August 2014Thumbnail for version as of 06:01, 31 August 20141,568 × 2,000 (1.23 MB)Geo Swan (talk | contribs)Transferred from Flickr via Flickr2commons

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