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Cape Lookout National Seashore shared Sunday a photo of “Cool looking and unusually large sand pedestals at north end of North Core Banks at mile 2 caused by the strong E winds that have been blowing recently.”
The sand pedestals are formed when the sand is not uniformly hardened or resistant, according to the post. When the wind blows away loose sand, the domes or pedestals, which are more wind resistant due to moisture or cementation from salcrete, or sand stuck together by salt crystals, remain.
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“The light and dark patterns in the pedestals are from layers of light colored minerals in the sand (such as quartz) and darker layers of “heavy minerals” (such as magnetite or ilmenite). The wind cuts through the layers leaving the designs,” officials say.
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