Seeing Sea Stacks – By Jerry Gorsline


Sea Stacks located along Olympic coast and western reaches of the Strait of Juan de Fuca are remnants of headlands that remain after erosion of cliffs by wave action. Erosion of headlands creates caves, and then arches that eventually collapse to form stand-alone large or small sea stacks that lie close to the shore, and offshore by as much as three miles. Flat-topped rocks standing at an approximate elevation of 100 feet represent the horizontal surface of an elevated wave-cut platform, raised by vertical movement of the earth’s surface after the continental ice sheet receded, causing the coastal shelf to rebound.

Thoughts by Jerry Gorsline. Photo by Olympic National Park Website.

 

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