leg site hole age mnemonic auxiliary age mnemonic top of section depth(m) bottom of section depth(m) special condition age auxiliary age averaged age age top of section(million years) age bottom of section(million years) average age(million years)t data source 38 336 PLEISTOCENE PLIOCENE 0.0 45.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 0.011 5 2.506 DSDP INITIAL REPORTS 38 336 PLIOCENE 45.0 159.0 NO AGE GIVEN NO AGE GIVEN 1.8 5 3.4 DSDP INITIAL REPORTS 38 336 UPPER OLIGOCENE 159.0 178.0 NO AGE GIVEN NO AGE GIVEN 22.5 30 26.25 DSDP INITIAL REPORTS 38 336 MIDDLE OLIGOCENE 178.0 216.0 NO AGE GIVEN NO AGE GIVEN 29 32 30.5 DSDP INITIAL REPORTS 38 336 OLIGOCENE EOCENE 216.0 254.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 22.5 53.5 38 DSDP INITIAL REPORTS 38 336 UPPER EOCENE 254.0 339.5 NO AGE GIVEN NO AGE GIVEN 37.5 43 40.25 DSDP INITIAL REPORTS 38 336 UPPER EOCENE MIDDLE EOCENE 349.0 463.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 37.5 49 43.25 DSDP INITIAL REPORTS