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 31 293 HOLOCENE PLEISTOCENE 0.0 3.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 0 1.8 0.9 DSDP INITIAL REPORTS 31 293 PLEISTOCENE 98.0 107.5 NO AGE GIVEN NO AGE GIVEN 0.011 1.8 .9055 DSDP INITIAL REPORTS 31 293 UPPER PLIOCENE 145.5 278.5 NO AGE GIVEN NO AGE GIVEN 1.8 3.4 2.6 DSDP INITIAL REPORTS 31 293 UPPER PLIOCENE MIDDLE MIOCENE 525.5 563.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 1.8 16 8.9 DSDP INITIAL REPORTS