Friday fold: passively folded marble

It’s Friday!

Here’s Baxter, last Friday, in Athens, Greece. He’s checking out some folds in the marble that’s everywhere in that city:

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This is a lovely example of passive folding, where all the rock layers being folded have about the same viscosity (low viscosity contrast between layers). No buckling, as a result…

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Enjoy the weekend, hopefully passively!

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