Some of you are on the right sort of track to the answer to Friday’s geopuzzle, but I think that I can clear up the uncertainties considerably by demonstrating exactly why this particular rock is staying well away from my lab.
Here’s an innocent compass:
And here’s what happens when my new deskcrop is placed nearby:
One of my companions on last week’s trip suggested that we could have a lot of fun trying to get first year undergraduates to measure the bedding orientation in the locality this sample was retrieved from. How deliciously evil.
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