Baculite Mesa, Pierre Shale, Pueblo, CO - 5/17/2003

Prev | Index For This Date | Next
Some concretions contain crystal structures which formed over millions of years during the fossilization processes. Rusty Zone or Tepee Zone of Pierre Shale.
Prev | Index For This Date | Next

Some concretions contain crystal structures which formed over millions of years during the fossilization processes. Rusty Zone or Tepee Zone of Pierre Shale.