When sand is deposited, either by wind or water, a sedimentary structure called crossbedding is formed. The changes in layers are changes in depositional intensity and direction. These two specimens were collected from 70,000 year old wind blown sand deposits. Essentially, a cut was made into the deposit exposing a fresh surface and the cross section of the sand was transferred onto foam core board using a technique I created myself that involved spray glue and an oil based primer. I also built the frames from redwood and matted the pieces.
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