Figure F2. Age map of the Cocos plate and corresponding regions of the Pacific plate. Isochrons at 5 m.y. intervals have been converted from magnetic anomaly identifications according to the timescale of Cande and Kent (1995). Selected DSDP and ODP sites that reached basement are indicated. The wide spacing of 1020 m.y. isochrons to the south reflects the extremely fast (200220 mm/y) full spreading rate (modified from Shipboard Scientific Party, 2003). FZ = fracture zone.
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