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 33 318 QUATERNARY 0.0 28.5 NO AGE GIVEN NO AGE GIVEN 0 1.8 0.9 DSDP INITIAL REPORTS 33 318 QUATERNARY UPPER PLIOCENE 28.5 35.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 0 3.4 1.7 DSDP INITIAL REPORTS 33 318 LOWER PLIOCENE 64.5 131.0 NO AGE GIVEN NO AGE GIVEN 3.4 5 4.2 DSDP INITIAL REPORTS 33 318 UPPER MIOCENE 150.0 216.5 NO AGE GIVEN NO AGE GIVEN 5 10.5 7.75 DSDP INITIAL REPORTS 33 318 MIDDLE MIOCENE 235.5 245.0 NO AGE GIVEN NO AGE GIVEN 10.5 16 13.25 DSDP INITIAL REPORTS 33 318 LOWER MIOCENE 264.0 330.5 NO AGE GIVEN NO AGE GIVEN 16 22.5 19.25 DSDP INITIAL REPORTS 33 318 UPPER OLIGOCENE 349.5 387.5 NO AGE GIVEN NO AGE GIVEN 22.5 30 26.25 DSDP INITIAL REPORTS 33 318 MIDDLE OLIGOCENE 406.5 416.0 NO AGE GIVEN NO AGE GIVEN 29 32 30.5 DSDP INITIAL REPORTS 33 318 LOWER OLIGOCENE 435.0 438.0 NO AGE GIVEN NO AGE GIVEN 30 37.5 33.75 DSDP INITIAL REPORTS 33 318 UPPER EOCENE 438.0 530.0 NO AGE GIVEN NO AGE GIVEN 37.5 43 40.25 DSDP INITIAL REPORTS 33 318 MIDDLE EOCENE 549.0 672.5 NO AGE GIVEN NO AGE GIVEN 43 49 46 DSDP INITIAL REPORTS 33 318 EOCENE 682.0 691.5 NO AGE GIVEN NO AGE GIVEN 37.5 53.5 45.5 DSDP INITIAL REPORTS 33 318 MIDDLE EOCENE 701.0 710.5 NO AGE GIVEN NO AGE GIVEN 43 49 46 DSDP INITIAL REPORTS 33 318 LOWER EOCENE 720.0 745.0 NO AGE GIVEN NO AGE GIVEN 49 53.5 51.25 DSDP INITIAL REPORTS