Someone posted this on the FB group page today. It is a great little video showing a geological overview of Colorado's history. I thought I would bring it here.
http://igp.colorado.edu/library/video/143654356
(swizz, listen close to the end when it talks about the glaciers (19:20). I think it may be a piece to your puzzle.)
Lots of good info...thanks
Cool info MikeS. thanks for posting up the link.
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