Today's lesson is in geology. What we have here is a very nice picture of a South African Oryx helicopter flying in front of a rocky cliff that has a large cleft right in the middle. The part I thought was interesting is the way the sedimentary layers in the upper left quadrant of the picture make an esse curve. Think maybe those rocks got a little warm at some point? Like when they were a few tens of miles underground, or maybe it was a crash of continents. Hard to imagine how they got back up to the surface where we could see them.
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