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

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Upper Lykins formation: These finer cross laminations within the larger cross bedding of the dune are caused by swirling winds at the base (margin) of the dune. They are often perpendicular to the main cross beds. (Scale in centimeters)
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Upper Lykins formation: These finer cross laminations within the larger cross bedding of the dune are caused by swirling winds at the base (margin) of the dune. They are often perpendicular to the main cross beds. (Scale in centimeters)



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