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

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Upper Lykins formation: Here we see lose shales and muds which are present between the harder sandstone layers. This is the result of long periods of alternating wet and dry.
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Upper Lykins formation: Here we see lose shales and muds which are present between the harder sandstone layers. This is the result of long periods of alternating wet and dry.