ODP Legacy > Scientific Results > Leg Summaries > Leg 192 >
Satellite-derived free-air gravity field of the Ontong Java Plateau region showing ODP drill sites and survey lines providing seismic control
After Sandwell and Smith, 1997. Solid stars = sites penetrating lava sections. Open star = Site 1184, where a volcaniclastic sequence was recovered. Solid circles = previous ODP and DSDP drill sites that reached basement. Open circles = 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 (see text). 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.
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