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 10 86 UPPER PLEISTOCENE 13.0 17.5 NO AGE GIVEN NO AGE GIVEN 0.01 0.7 0.355 DSDP INITIAL REPORTS 10 86 LOWER PLEISTOCENE 52.0 61.0 NO AGE GIVEN NO AGE GIVEN 1.2 1.8 1.5 DSDP INITIAL REPORTS 10 86 UPPER PLIOCENE MIDDLE PLIOCENE 161.1 170.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 1.8 4 2.9 DSDP INITIAL REPORTS 10 86 MIDDLE PLIOCENE 257.0 266.0 NO AGE GIVEN NO AGE GIVEN 3 4 3.5 DSDP INITIAL REPORTS 10 86 LOWER OLIGOCENE 371.0 380.0 NO AGE GIVEN NO AGE GIVEN 30 37.5 33.75 DSDP INITIAL REPORTS 10 86 UPPER PALEOCENE 498.0 517.0 NO AGE GIVEN NO AGE GIVEN 53.5 60 56.75 DSDP INITIAL REPORTS 10 86 LOWER PALEOCENE 551.0 561.0 NO AGE GIVEN NO AGE GIVEN 60 65 62.5 DSDP INITIAL REPORTS 10 86 LOWER CRETACEOUS 610.0 686.0 NO AGE GIVEN NO AGE GIVEN 100 135 117.5 DSDP INITIAL REPORTS