File:Ancient Asteroid Impact Debrisite in Thunder Bay (8031545102).jpg

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-Natural History Story- Chaos in Thunder Bay area 400 miles (660 km) away from an asteroid impact crater in Sudbury 1.85 billion years ago. This outcrop of impact debrisite consists of boulders to 1 foot (0.3 m) long within a fine-grained matrix of ejected material.

www.lakesuperiorgeology.org/publications/proceedings.html and find ILSG's 2012 annual publication, see papers #1 and #5 for Thunder Bay area sites

impact.ese.ic.ac.uk/ImpactEffects/ Earth Impact Effects Program is a university application that calculates the physical effects from any rock from space large enough to form a crater on Earth. The Sudbury impacter laid a stupefying "whupping" that was at least a continent wide upon ancient Earth. en.wikipedia.org/wiki/Sudbury_Basin

Here's a link to my photo of the more well-known "dinosaur killer" Cretaceous-Tertiary boundary ash layer in Alberta.

www.flickr.com/photos/31856336@N03/5090097984/
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Source Ancient Asteroid Impact Debrisite in Thunder Bay
Author Mike Beauregard from Nunavut, Canada

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This image was originally posted to Flickr by subarcticmike at https://www.flickr.com/photos/31856336@N03/8031545102. 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 20142,400 × 1,801 (2.63 MB)Geo Swan (talk | contribs)Transferred from Flickr via Flickr2commons

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