Old rocks

You're looking with me at an exposed portion of the North American Precambrian Shield. That's a geological formation. You say, "a rock is a rock", but I say, "yeah but these are 2500 million years old, dude."
This stuff creeps out of the roadside about a mile from the border as Anne and I passed on our way to Thunder Bay, Ontario. We drove around a very dismal waterfont that must have been a couple million years old itself, and decided to head home after ancient hamburgers and a visit to the "Charity Casino" (don't ask...we didn't) .
This blog post is dedicated to my brother-in-law, Pete, a hydrogeologist who would've reveled with me in the rubble. And who could have filled us all in about the subtle details of the shield. The Precambrian shield. Remeber? jeez.

C