They realized that the pattern of reversals matched perfectly the magnetic profile they had compiled of the sea floor. This discovery, together with data from a 1964 research vessel, transformed ...

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Magnetic anomalies and the pattern of seismicity suggest that the present Chile Rise has been spreading at 2.7 cm/yr along a NNE axis. Older oceanic crust (25–55 m.y. BP) near the coast of Chile ...