Today we had the chance to explore the northern part of the island known as North Point. The rocks at this location are very young and were formed during the Holocene. The North Point formation exhibits many sedimentary structures such as cross bedding and contour weathering structures. In the picture you may notice that the lower part of the formation is a lighter tan color and is also being eroded quicker than the top part of the formation. This is due to constant wave activity which erodes the rock overtime. When waves crash into the rocks, the water splashes on to the upper part of the formation and hardens the rocks on top of the formation. When examining the cross bedding of the rocks, we noted that winds came from the Northeast to form the eolianites and their cross bedding. My favorite sedimentary structure that is seen in this formation are the contour weathering structures that resemble a topographic map! These structures are formed due to erosion from rain and wind. You can note the individual sand layers when looking at these structures!
This post was contributed by Nolan K.
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