Keywords: Late Precambrian Noonday Formation.jpg Late Precambrian Noonday Formation scoured in Mosaic Canyon by periodic flow USGS photo moved here from the English Wikipedia http //en wikipedia org/wiki/Image Noonday_Dolomite1 jpg Late Precambrian Noonday Formation http //geomaps wr usgs gov/parks/deva/time3 html 01/13/04 USGS PD-USGov Precambrian Mosaic Canyon |