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8 August 2012

Armored mud balls

Ever seen an armored mud ball? In this post, Callan encounters a small herd of these geological oddities in a coulee in southern Alberta.


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What those geologists were looking at

Yesterday, I showed you a scene of geologists (including me) clustered around some (presumably interesting) outcrop. I asked what you thought we might be looking at. Howard Allen, a denizen of this part of the globe, immediately identified the scene as that of the downstream end of the Athabasca Glacier. Several people guessed that we were looking at “glacial striations,” and that’s a good guess. Indeed there were plenty of …


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