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 90 588 QUATERNARY 0.0 24.8 NO AGE GIVEN NO AGE GIVEN 0 1.8 0.9 DSDP INITIAL REPORTS 90 588 QUATERNARY UPPER PLIOCENE 24.8 34.4 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 0 3.4 1.7 DSDP INITIAL REPORTS 90 588 UPPER PLIOCENE 34.4 53.6 NO AGE GIVEN NO AGE GIVEN 1.8 3.4 2.6 DSDP INITIAL REPORTS 90 588 UPPER PLIOCENE LOWER PLIOCENE 53.6 63.2 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 1.8 5 3.4 DSDP INITIAL REPORTS 90 588 LOWER PLIOCENE 72.8 101.6 NO AGE GIVEN NO AGE GIVEN 3.4 5 4.2 DSDP INITIAL REPORTS 90 588 LOWER PLIOCENE UPPER MIOCENE 101.6 111.2 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 3.4 10.5 6.95 DSDP INITIAL REPORTS 90 588 UPPER MIOCENE 111.2 207.2 NO AGE GIVEN NO AGE GIVEN 5 10.5 7.75 DSDP INITIAL REPORTS 90 588 UPPER MIOCENE MIDDLE MIOCENE 207.2 216.8 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 5 16 10.5 DSDP INITIAL REPORTS 90 588 MIDDLE MIOCENE 216.8 236.0 NO AGE GIVEN NO AGE GIVEN 10.5 16 13.25 DSDP INITIAL REPORTS