Mazon update

I mentioned a detour to Mazon a few months ago, and said we collected some discarded concretions, one of which had an obvious fossil.

Instead of using a hammer and chisel, I soaked the concretions in water and then froze them. Repeatedly.

After about 20 iterations, during which little chips spalled off here and there, one that had an OK jellyfish opened up to show a fragment of a leaf on the other side. There's probably more, but I'm not sure how to peel back the rest of that layer. Yesterday, after a dozen more iterations, a little crack opened in another, and when I pried the thing apart it looks like a twig was inside. Not as exciting as a TullyMonster, but discovery is fun.