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 30 286 PLEISTOCENE 0.0 26.0 NO AGE GIVEN NO AGE GIVEN 0.011 1.8 .9055 DSDP INITIAL REPORTS 30 286 UPPER PLIOCENE 35.5 45.0 NO AGE GIVEN NO AGE GIVEN 1.8 3.4 2.6 DSDP INITIAL REPORTS 30 286 LOWER PLIOCENE 54.5 64.0 NO AGE GIVEN NO AGE GIVEN 3.4 5 4.2 DSDP INITIAL REPORTS 30 286 MIDDLE MIOCENE UPPER OLIGOCENE 73.5 83.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 10.5 30 20.25 DSDP INITIAL REPORTS 30 286 UPPER OLIGOCENE 95.0 102.0 NO AGE GIVEN NO AGE GIVEN 22.5 30 26.25 DSDP INITIAL REPORTS 30 286 UPPER OLIGOCENE LOWER OLIGOCENE 111.5 121.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 22.5 37.5 30 DSDP INITIAL REPORTS 30 286 LOWER OLIGOCENE 130.5 140.0 NO AGE GIVEN NO AGE GIVEN 30 37.5 33.75 DSDP INITIAL REPORTS 30 286 LOWER OLIGOCENE UPPER EOCENE 149.5 159.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 30 43 36.5 DSDP INITIAL REPORTS 30 286 UPPER EOCENE 168.5 292.0 NO AGE GIVEN NO AGE GIVEN 37.5 43 40.25 DSDP INITIAL REPORTS 30 286 MIDDLE EOCENE 301.5 649.0 NO AGE GIVEN NO AGE GIVEN 43 49 46 DSDP INITIAL REPORTS