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 43 387 QUATERNARY 31.8 41.3 NO AGE GIVEN NO AGE GIVEN 0 1.8 0.9 DSDP INITIAL REPORTS 43 387 MIDDLE OLIGOCENE LOWER OLIGOCENE 98.4 108.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 29 37.5 33.25 DSDP INITIAL REPORTS 43 387 UPPER EOCENE 136.6 146.1 NO AGE GIVEN NO AGE GIVEN 37.5 43 40.25 DSDP INITIAL REPORTS 43 387 MIDDLE EOCENE 146.1 260.1 NO AGE GIVEN NO AGE GIVEN 43 49 46 DSDP INITIAL REPORTS 43 387 MIDDLE EOCENE LOWER EOCENE 260.1 279.1 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 43 53.5 48.25 DSDP INITIAL REPORTS 43 387 LOWER EOCENE 288.7 383.8 NO AGE GIVEN NO AGE GIVEN 49 53.5 51.25 DSDP INITIAL REPORTS 43 387 LOWER PALEOCENE 393.3 421.7 NO AGE GIVEN NO AGE GIVEN 60 65 62.5 DSDP INITIAL REPORTS 43 387 UPPER CRETACEOUS 443.8 517.1 NO AGE GIVEN NO AGE GIVEN 65 100 82.5 DSDP INITIAL REPORTS 43 387 UPPER CRETACEOUS LOWER CRETACEOUS 517.1 536.2 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 65 135 100 DSDP INITIAL REPORTS 43 387 LOWER CRETACEOUS 536.2 791.9 NO AGE GIVEN NO AGE GIVEN 100 135 117.5 DSDP INITIAL REPORTS