Most scientists think the iridium-rich sediments found straddling the CretaceousTertiary boundary can be explained by a meteorite

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Most scientists think the iridium-rich sediments found straddling the Cretaceous–Tertiary boundary can be explained by a meteorite impact. Why are high concentrations of iridium significant?

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Conceptual Physical Science

ISBN: 978-0134060491

6th edition

Authors: Paul G. Hewitt, John A. Suchocki, Leslie A. Hewitt

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