Stalagmite (IMAGE)

University of Massachusetts Amherst

Stalagmite

Caption

These stalagmites in Pacupuhuain Cave in the Andes of Peru are similar to ones sampled by Stephen Burns, Lisa Kanner and colleagues for their study of tropical rainfall cycles in the Southern hemisphere. Analysis of oxygen isotopes in such features provide a 34,000-year record of rainfall variation in the Amazon Basin.

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UMass Amherst

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