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 12 112 PLEISTOCENE 28.0 37.0 NO AGE GIVEN NO AGE GIVEN 0.011 1.8 .9055 DSDP INITIAL REPORTS 12 112 PLIOCENE 100.0 109.0 NO AGE GIVEN NO AGE GIVEN 1.8 5 3.4 DSDP INITIAL REPORTS 12 112 MIOCENE 150.0 209.0 NO AGE GIVEN NO AGE GIVEN 5 22.5 13.75 DSDP INITIAL REPORTS 12 112 OLIGOCENE 270.0 393.0 NO AGE GIVEN NO AGE GIVEN 22.5 37.5 30 DSDP INITIAL REPORTS 12 112 UPPER EOCENE 441.0 508.0 NO AGE GIVEN NO AGE GIVEN 37.5 43 40.25 DSDP INITIAL REPORTS 12 112 LOWER EOCENE 578.0 659.0 NO AGE GIVEN NO AGE GIVEN 49 53.5 51.25 DSDP INITIAL REPORTS