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 90 592 QUATERNARY 0.0 14.1 NO AGE GIVEN NO AGE GIVEN 0 1.8 0.9 DSDP INITIAL REPORTS 90 592 QUATERNARY UPPER PLIOCENE 14.1 23.7 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 0 3.4 1.7 DSDP INITIAL REPORTS 90 592 QUATERNARY 23.7 27.7 A LEGITIMATE AGE INVERSION NO AGE GIVEN NO AGE GIVEN 0 1.8 0.9 DSDP INITIAL REPORTS 90 592 UPPER PLIOCENE 27.7 52.5 NO AGE GIVEN NO AGE GIVEN 1.8 3.4 2.6 DSDP INITIAL REPORTS 90 592 UPPER PLIOCENE LOWER PLIOCENE 52.5 71.7 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 1.8 5 3.4 DSDP INITIAL REPORTS 90 592 LOWER PLIOCENE 71.7 100.5 NO AGE GIVEN NO AGE GIVEN 3.4 5 4.2 DSDP INITIAL REPORTS 90 592 UPPER MIOCENE 100.5 215.7 NO AGE GIVEN NO AGE GIVEN 5 10.5 7.75 DSDP INITIAL REPORTS 90 592 MIDDLE MIOCENE 215.7 263.7 NO AGE GIVEN NO AGE GIVEN 10.5 16 13.25 DSDP INITIAL REPORTS 90 592 MIDDLE MIOCENE LOWER MIOCENE 263.7 273.3 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 10.5 22.5 16.5 DSDP INITIAL REPORTS 90 592 LOWER MIOCENE 273.3 305.8 NO AGE GIVEN NO AGE GIVEN 16 22.5 19.25 DSDP INITIAL REPORTS 90 592 LOWER OLIGOCENE 305.8 330.9 NO AGE GIVEN NO AGE GIVEN 30 37.5 33.75 DSDP INITIAL REPORTS 90 592 UPPER EOCENE 330.9 388.5 NO AGE GIVEN NO AGE GIVEN 37.5 43 40.25 DSDP INITIAL REPORTS