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 73 522 QUATERNARY 0.0 7.3 NO AGE GIVEN NO AGE GIVEN 0 1.8 0.9 DSDP INITIAL REPORTS 73 522 QUATERNARY UPPER PLIOCENE 7.3 10.8 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 0 3.4 1.7 DSDP INITIAL REPORTS 73 522 UPPER PLIOCENE 10.8 24.0 NO AGE GIVEN NO AGE GIVEN 1.8 3.4 2.6 DSDP INITIAL REPORTS 73 522 LOWER PLIOCENE 24.0 32.8 NO AGE GIVEN NO AGE GIVEN 3.4 5 4.2 DSDP INITIAL REPORTS 73 522 LOWER PLIOCENE UPPER MIOCENE 32.8 37.2 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 3.4 10.5 6.95 DSDP INITIAL REPORTS 73 522 MIDDLE MIOCENE 44.2 48.2 NO AGE GIVEN NO AGE GIVEN 10.5 16 13.25 DSDP INITIAL REPORTS 73 522 MIOCENE 48.2 50.7 A LEGITIMATE AGE INVERSION NO AGE GIVEN NO AGE GIVEN 5 22.5 13.75 DSDP INITIAL REPORTS 73 522 LOWER MIOCENE 50.7 56.6 NO AGE GIVEN NO AGE GIVEN 16 22.5 19.25 DSDP INITIAL REPORTS 73 522 UPPER OLIGOCENE 56.6 108.6 NO AGE GIVEN NO AGE GIVEN 22.5 30 26.25 DSDP INITIAL REPORTS 73 522 LOWER OLIGOCENE 108.6 136.2 NO AGE GIVEN NO AGE GIVEN 30 37.5 33.75 DSDP INITIAL REPORTS 73 522 LOWER OLIGOCENE UPPER EOCENE 136.2 139.7 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 30 43 36.5 DSDP INITIAL REPORTS 73 522 UPPER EOCENE 139.7 148.7 NO AGE GIVEN NO AGE GIVEN 37.5 43 40.25 DSDP INITIAL REPORTS