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Mountain-sized chunk of rock hiding under Japan is channeling earthquakes

An underground rock the size of a mountain could affect the paths of major earthquakes in southern Japan.

The dense igneous rock known as the kumano pluton lurks about 5 kilometers below the surface beneath Japan’s Kii Peninsula. It sits in the crust of the continental Eurasian Plate. Beneath this continental crustal plate, the oceanic Philippine Plate is subducting toward Earth’s mantle, a process called subduction. New research suggests that heavy pluton in the Eurasian Plate is changing the slope of this dive, forcing the Philippine Plate steeper down.

Mountain-sized chunk of rock hiding under Japan is channeling earthquakes Source link Mountain-sized chunk of rock hiding under Japan is channeling earthquakes

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