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Department of Earth Sciences
Open University
Milton Keynes, U.K.

  • A combined paleomagnetic, sedimentological, and stratigraphic study of a Late Devonian iridium anomaly in Western Australia suggests that the iridium was concentrated over a long period by purely biological processes. In short, meteorite impact is not the only way of generating iridium anomalies in the earth's crust.

    N.F. Hurley, R. Van der Voo, "Magnetostratigraphy, Late Devonian iridium anomaly, and...

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