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Woods Hole Oceanographic Institution

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A peat core from Thoreau's bog near Boston. This ombrotrophic bog records eolian deposition in an urban environement. Peat samples were analyzed for platinum group element (PGE) concentrations and osmium isotopic composition. The impact of anthropogenic PGE is clearly visible, indicating eolian transport of these metals from nearby sources. (S. Rauch)


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