Now for something completely different -- a boulder made of "diamictite" (let's call it till) in a boulder train on James Ross Island, Antarctica. It did not fall onto a glacier surface, and so it must have been excavated by over-riding ice in a deeply frozen state -- and then transported rather delicately by the glacier........
I have never seen this phenomenon before! Further info here:
http://www.antarcticglaciers.org/glacial-geology/glacial-landforms/glacial-landsystems-on-james-ross-island/#jp-carousel-5863
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