16 April 2021

Friday fold: Colorado cluster

Posted by Callan Bentley

Reader Carl Brink laments the lack of robust recent Friday folds, and he’s decided to do something about it!

From Colorado’s Front Range, he sends this image of an intensely folded granite dikelet within Proterozoic biotite schist:

That’s intense. Ptygmatic, sure, but the butterfly-like sense of symmetry to it reminds me of a Rorschach blot.

What a gorgeous fold. Thank you, Carl!