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  • Little Barrier Island, an extinct andesite cone.
    Rights: Dick Veitch Published 12 July 2017 Size: 52 KB Referencing Hub media

    An extinct andesite cone. The lava was thick so it formed a steep-sided cone, which has been weathered over time to form the present shape of the island. Last erupted between 1 and 3 million years ago.

    Acknowledgement: Dick Veitch

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