Geologist Carol Dehler at Grand Canyon's Bright Angel Formation (IMAGE)

Utah State University

Geologist Carol Dehler at Grand Canyon's Bright Angel Formation

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Utah State University geologist Carol Dehler samples the 500-million-year-old Bright Angel Formation in Grand Canyon. The site is among several formations in a group of rocks she and colleagues are studying, with NSF funding, to better understand rates of sediment accumulation and the tempo of animal life evolution.

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Laura Crossey, UNM

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