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 6 59 B LOWER MIOCENE 89.3 107.6 NO AGE GIVEN NO AGE GIVEN 16 22.5 19.25 DSDP INITIAL REPORTS 6 59 B LOWER MIOCENE UPPER OLIGOCENE 107.6 125.9 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 16 30 23 DSDP INITIAL REPORTS 6 59 B LOWER OLIGOCENE UPPER EOCENE 125.9 131.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 30 43 36.5 DSDP INITIAL REPORTS 6 59 B EOCENE PALEOCENE 131.0 135.3 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 37.5 65 51.25 DSDP INITIAL REPORTS