Geology of Colorado (Boulder Valley) - Field Trip #1, Stop #5: Lykins, Canyon Spring, Morrison, Dakota Formations

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Canyon Spring sandstone: "Lag sands" (tiny pebbles) which are transported, broken apart and evenly dispersed in high winds of dune environment.
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Canyon Spring sandstone: "Lag sands" (tiny pebbles) which are transported, broken apart and evenly dispersed in high winds of dune environment.