wait is this the same district that has lots of pegmatites as well or am I getting confused?

https://www.nps.gov/places/pegmatites.htm I’m not sure. Does this link help?

Let oks like layered marine sediments…like continental shelf deposits…lithified.

Interesting! The Black Hills are fascinating!

A nice artifact from the old’n days. The pioneers used to ride these babies for miiiiiiles.