Contact: Pam Frost Gorder
Ohio State University
Caption: This photo from a 1977 expedition to Quelccaya Ice Cap in Peru shows clearly defined annual layers of ice and dust visible in the ice cap's margin. Researchers at the Ohio State University are using a set of ice cores taken from Quelccaya as a "Rosetta Stone" for studying other ice cores taken from around the world.
Credit: Photo by Lonnie Thompson, Courtesy of Ohio State University.
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