Total sediment thickness is about 1500 m. Secondly, it should penetrate a lower Oligocene and upper Eocene marine sequence whose character is poorly known. There is little angular break apparent at the Oligocene unconformity. The present water depth is 2630 m. The site should penetrate 640 m through Cenozoic sediments in an area of almost flat-lying sediments about 1400 m thick.
Basement is believed to be Eocene volcanics above cratonic basement.
The seismic profiles suggest that there is a Neogene pelagic carbonate sequence overlying a tight Paleogene sequence of volcaniclastic mudstone or muddy sandstone. Given the sediment thickness, there is almost no chance of hydrocarbon generation, and there are no conceivable traps. The site is in a depression in the basement and should be safe from possible hydrocarbon entrapment. Basement is again believed to be Eocene volcanics above cratonic basement.