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 38 345 PLEISTOCENE 0.0 17.5 NO AGE GIVEN NO AGE GIVEN 0.011 1.8 .9055 DSDP INITIAL REPORTS 38 345 PLEISTOCENE UPPER MIOCENE 17.5 36.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 0.011 10.5 5.256 DSDP INITIAL REPORTS 38 345 LOWER MIOCENE 36.5 122.0 NO AGE GIVEN NO AGE GIVEN 16 22.5 19.25 DSDP INITIAL REPORTS 38 345 LOWER MIOCENE UPPER OLIGOCENE 131.5 169.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 16 30 23 DSDP INITIAL REPORTS 38 345 OLIGOCENE 188.5 530.5 NO AGE GIVEN NO AGE GIVEN 22.5 37.5 30 DSDP INITIAL REPORTS 38 345 UPPER EOCENE 559.0 720.5 NO AGE GIVEN NO AGE GIVEN 37.5 43 40.25 DSDP INITIAL REPORTS 38 345 EOCENE 720.5 764.0 NO AGE GIVEN NO AGE GIVEN 37.5 53.5 45.5 DSDP INITIAL REPORTS