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Maori stones hold clues to Earth’s magnetic fields

Researchers are examining the stones found in ancient Maori ovens to study how the Earth’s magnetic field has changed over the past 10,000 years.

Abandoned stones at these locations could shed light on Earth’s magnetic behaviour going back hundreds of years.

“We have very good palaeomagnetic data from across the world recording field strength and direction – especially in the Northern Hemisphere,” said Gillian Turner from Victoria University, Wellington, New Zealand.

“The southwest Pacific is the gap, and in order to complete global models, we’re rather desperate for good, high-resolved data from our part of the world,” she told BBC News.

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Story: Jonathan Amos, BBC News | Photo: G. Turner

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