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    • Rights: The University of Waikato Published 9 April 2010 Size: 49 KB Referencing Hub media

    Rhyolite ash in a rock core sample. Scientists use different layers in a rock core sample to help them determine what volcanic eruptions happened when and where.

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      Reading rock core samples

      One important question that the scientists like Dr Phil Shane at The University of Auckland are asking is: “When did the volcanoes in Auckland last erupt?” Answering this question will help them ...

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