Two new studies show what can be learned from a short seismic checkup of natural rock arches and how erosion sculpts some arches -- like the iconic Delicate Arch -- into shapes that lend added ...
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BRYCE CANYON, Utah, July 21 (UPI) --Sandstone arches, alcoves and pillars are scattered across the globe, monuments to nature's strange beauty -- odd, gravity-defying shapes carved by the wind and ...
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