Figure F1. Geologic overview of eastern central Pacific seafloor bathymetry and adjacent land elevation, showing locations of ODP Legs 170, 205, and 206, DSDP Hole 504B, the Middle America Trench off Costa Rica, the Cocos-Nazca spreading center, and volcanic products of the Galápagos hotspot, including the Galápagos Islands, the Cocos and Carnegie Ridges, and the Cocos track tholeiites. Also shown is the approximate paleolocation of Subunits 4A and 4B at 14.5 Ma. Convergence direction and rate are from DeMets et al. (1990).

Figure F1. Geologic overview of eastern central Pacific seafloor bathymetry and adjacent land elevation, showing locations of ODP Legs 170, 205, and 206, DSDP Hole 504B, the Middle America Trench off Costa Rica, the Cocos-Nazca spreading center, and volcanic products of the Galápagos hotspot, including the Galápagos Islands, the Cocos and Carnegie Ridges, and the Cocos track tholeiites. Also shown is the approximate paleolocation of Subunits 4A and 4B at 14.5 Ma. Convergence direction and rate are from DeMets et al. (1990).