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 32 308 QUATERNARY LOWER EOCENE 0.0 3.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 0 53.5 26.75 DSDP INITIAL REPORTS 32 308 LOWER EOCENE 3.0 68.5 NO AGE GIVEN NO AGE GIVEN 49 53.5 51.25 DSDP INITIAL REPORTS