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Geomagnetic polarity timescale

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

The Late Cretaceous period section of the geomagnetic polarity timescale. This shows the barcode-like patterns of normal and reversed magnetic field measured in oceanic crust. The changes have been accurately dated using radiometric methods.


Science Learning Hub Survey 2014

Dear Hub visitor,

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.

Take the survey