That wouldn't cause the "bullseye" pattern the article describes, would it?

I don't think the recent glaciation got as far south at Utah, anyway.

You may be referring to the ice sheet, but there have been many periods of alpine glaciation in Utah. https://www.sciencedirect.com/science/article/abs/pii/S02773... and https://geology.utah.gov/map-pub/survey-notes/utahs-glacial-...