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Earth science

Trouble under Tonga?

Earthquakes occur in cool, foundering tectonic plates deep within the Earth. But seismic data from the southwestern Pacific indicate that the minerals that make up the plates at depth don't behave as if they are cool.

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Figure 1: Tibi and Wiens' observations1 of the northern Tonga subduction zone.


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Helffrich, G. Trouble under Tonga?. Nature 436, 637–638 (2005).

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