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 82 558 A PLEISTOCENE 0.0 10.0 NO AGE GIVEN NO AGE GIVEN 0.011 1.8 .9055 DSDP INITIAL REPORTS 82 558 A PLEISTOCENE PLIOCENE 10.0 19.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 0.011 5 2.506 DSDP INITIAL REPORTS 82 558 A PLIOCENE 19.5 74.0 NO AGE GIVEN NO AGE GIVEN 1.8 5 3.4 DSDP INITIAL REPORTS 82 558 A PLIOCENE MIOCENE 74.0 86.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 1.8 22.5 12.15 DSDP INITIAL REPORTS 82 558 A UPPER MIOCENE 86.5 131.5 NO AGE GIVEN NO AGE GIVEN 5 10.5 7.75 DSDP INITIAL REPORTS