Figure F2. Satellite-derived free-air gravity field of the Ontong Java Plateau region (after Sandwell and Smith, 1997). The plateau is outlined. Stars = sites drilled during Leg 192. Black dots = previous ODP and DSDP drill sites that reached basement. White dots = Site 288, which did not reach basement but bottomed in Aptian limestone, and Site OJ-7, which was proposed for Leg 192 but not drilled. Black lines indicate multichannel seismic surveys on the plateau: Hakuho Maru KH98-1 Leg 2 (1998) and Maurice Ewing EW95-11 (1995). White lines indicate single-channel seismic surveys: Glomar Challenger GC07 (1969), GC30 (1973), and GC89 (1983); Thomas Washington TW88-11 (1988); and JOIDES Resolution JR130 (1990). The bathymetric contour interval is 1000 m.

Figure F2. Satellite-derived free-air gravity field of the Ontong Java Plateau region (after Sandwell and Smith, 1997). The plateau is outlined. Stars = sites drilled during Leg 192. Black dots = previous ODP and DSDP drill sites that reached basement. White dots = Site 288, which did not reach basement but bottomed in Aptian limestone, and Site OJ-7, which was proposed for Leg 192 but not drilled. Black lines indicate multichannel seismic surveys on the plateau: Hakuho Maru KH98-1 Leg 2 (1998) and Maurice Ewing EW95-11 (1995). White lines indicate single-channel seismic surveys: Glomar Challenger GC07 (1969), GC30 (1973), and GC89 (1983); Thomas Washington TW88-11 (1988); and JOIDES Resolution JR130 (1990). The bathymetric contour interval is 1000 m.