Map of the Pacific Ocean showing the location of islands and major geological features discussed in the text including major plates (according to Bird 2003). Plate nomenclature symbols are: AM, Amur; AN, Antarctic; AU, Australian; CA, Caribbean; CL, Caroline; CO, Cocos; EU, Eurasia; NA, North American; NH, New Hebrides; NZ, Nazca; OK, Okhotsk; PA, Pacific; PS, Philippine Sea; SA, South American; SU, Sunda; YA, Yangtze. For microplate nomenclature, see the electronic supplementary material.