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 21 207 A MIDDLE PLIOCENE 47.0 65.0 NO AGE GIVEN NO AGE GIVEN 3 4 3.5 DSDP INITIAL REPORTS 21 207 A LOWER PLIOCENE 65.0 77.0 NO AGE GIVEN NO AGE GIVEN 3.4 5 4.2 DSDP INITIAL REPORTS 21 207 A UPPER MIOCENE 77.0 119.0 NO AGE GIVEN NO AGE GIVEN 5 10.5 7.75 DSDP INITIAL REPORTS 21 207 A MIDDLE MIOCENE 119.0 126.0 NO AGE GIVEN NO AGE GIVEN 10.5 16 13.25 DSDP INITIAL REPORTS 21 207 A MIOCENE UPPER EOCENE 126.0 128.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 5 43 24 DSDP INITIAL REPORTS 21 207 A MIDDLE MIOCENE 133.0 142.0 A LEGITIMATE AGE INVERSION NO AGE GIVEN NO AGE GIVEN 10.5 16 13.25 DSDP INITIAL REPORTS 21 207 A MIDDLE EOCENE 142.0 270.0 NO AGE GIVEN NO AGE GIVEN 43 49 46 DSDP INITIAL REPORTS 21 207 A LOWER EOCENE 270.0 285.0 NO AGE GIVEN NO AGE GIVEN 49 53.5 51.25 DSDP INITIAL REPORTS 21 207 A UPPER PALEOCENE 286.0 291.0 NO AGE GIVEN NO AGE GIVEN 53.5 60 56.75 DSDP INITIAL REPORTS 21 207 A MIDDLE PALEOCENE 291.0 300.0 NO AGE GIVEN NO AGE GIVEN 58 60 59 DSDP INITIAL REPORTS 21 207 A LOWER PALEOCENE 300.0 309.0 NO AGE GIVEN NO AGE GIVEN 60 65 62.5 DSDP INITIAL REPORTS