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 61 462 PLEISTOCENE 0.5 19.5 NO AGE GIVEN NO AGE GIVEN 0.011 1.8 .9055 DSDP INITIAL REPORTS 61 462 PLIOCENE 19.5 38.5 NO AGE GIVEN NO AGE GIVEN 1.8 5 3.4 DSDP INITIAL REPORTS 61 462 PLIOCENE UPPER MIOCENE 38.5 76.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 1.8 10.5 6.15 DSDP INITIAL REPORTS 61 462 UPPER MIOCENE MIDDLE MIOCENE 86.0 112.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 5 16 10.5 DSDP INITIAL REPORTS 61 462 MIDDLE MIOCENE 112.5 143.0 NO AGE GIVEN NO AGE GIVEN 10.5 16 13.25 DSDP INITIAL REPORTS 61 462 LOWER MIOCENE 143.0 171.5 NO AGE GIVEN NO AGE GIVEN 16 22.5 19.25 DSDP INITIAL REPORTS 61 462 UPPER OLIGOCENE 171.5 238.0 NO AGE GIVEN NO AGE GIVEN 22.5 30 26.25 DSDP INITIAL REPORTS 61 462 LOWER OLIGOCENE UPPER EOCENE 238.0 314.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 30 43 36.5 DSDP INITIAL REPORTS 61 462 UPPER EOCENE 314.0 361.5 NO AGE GIVEN NO AGE GIVEN 37.5 43 40.25 DSDP INITIAL REPORTS 61 462 MIDDLE EOCENE 361.5 371.0 NO AGE GIVEN NO AGE GIVEN 43 49 46 DSDP INITIAL REPORTS 61 462 MIDDLE EOCENE LOWER EOCENE 380.5 399.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 43 53.5 48.25 DSDP INITIAL REPORTS 61 462 LOWER EOCENE 409.0 418.5 NO AGE GIVEN NO AGE GIVEN 49 53.5 51.25 DSDP INITIAL REPORTS 61 462 LOWER PALEOCENE 418.5 428.0 NO AGE GIVEN NO AGE GIVEN 60 65 62.5 DSDP INITIAL REPORTS 61 462 MIDDLE PALEOCENE MIDDLE MAESTRICHTIAN 428.0 437.5 A LEGITIMATE AGE INVERSION NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 58 67 62.5 DSDP INITIAL REPORTS 61 462 MIDDLE MAESTRICHTIAN 437.5 456.5 NO AGE GIVEN NO AGE GIVEN 66 67 66.5 DSDP INITIAL REPORTS 61 462 LOWER MAESTRICHTIAN 456.5 475.5 NO AGE GIVEN NO AGE GIVEN 67.5 70 68.75 DSDP INITIAL REPORTS 61 462 UPPER CAMPANIAN 475.5 504.0 NO AGE GIVEN NO AGE GIVEN 70 74 72 DSDP INITIAL REPORTS 61 462 CAMPANIAN 509.0 513.5 NO AGE GIVEN NO AGE GIVEN 70 78 74 DSDP INITIAL REPORTS 61 462 LOWER CAMPANIAN 513.5 522.5 NO AGE GIVEN NO AGE GIVEN 74 78 76 DSDP INITIAL REPORTS 61 462 LOWER SANTONIAN CONIACIAN 540.5 549.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 80 86 83 DSDP INITIAL REPORTS 61 462 CENOMANIAN UPPER ALBIAN 549.5 558.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 92 104 98 DSDP INITIAL REPORTS