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Paleomagnetic barcode

Note: Click the image below to view a larger version.

Changes in magnetic polarity are preserved in rocks of the ocean crust. This diagram shows the barcode pattern of magnetic reversals over the last 3 million years. All the stripes have been dated, but for clarity, only some are shown.

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Science Learning Hub Survey 2014

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You're invited to participate in an online survey about the New Zealand Science Learning Hub. This survey was designed to help Hub staff enhance and develop further the site. This is different from our November 2013 survey, so even if you took part in that survey, we would appreciate you taking this survey as well.

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