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 77 535 UPPER PLEISTOCENE 0.0 147.7 NO AGE GIVEN NO AGE GIVEN 0.01 0.7 0.355 DSDP INITIAL REPORTS 77 535 UPPER ALBIAN 147.7 154.5 NO AGE GIVEN NO AGE GIVEN 100 104 102 DSDP INITIAL REPORTS 77 535 ALBIAN 154.5 316.0 A LEGITIMATE AGE INVERSION NO AGE GIVEN NO AGE GIVEN 100 108 104 DSDP INITIAL REPORTS 77 535 LOWER ALBIAN 316.0 325.5 NO AGE GIVEN NO AGE GIVEN 106 108 107 DSDP INITIAL REPORTS 77 535 ALBIAN 325.5 392.0 A LEGITIMATE AGE INVERSION NO AGE GIVEN NO AGE GIVEN 100 108 104 DSDP INITIAL REPORTS 77 535 LOWER ALBIAN APTIAN 392.0 401.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 106 110 108 DSDP INITIAL REPORTS 77 535 APTIAN 401.0 419.0 NO AGE GIVEN NO AGE GIVEN 108 110 109 DSDP INITIAL REPORTS 77 535 APTIAN UPPER BARREMIAN 419.0 428.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 108 118 113 DSDP INITIAL REPORTS 77 535 LOWER BARREMIAN UPPER HAUTERIVIAN 428.0 464.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 118 123 120.5 DSDP INITIAL REPORTS 77 535 LOWER HAUTERIVIAN LOWER VALANGINIAN 464.0 655.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 123 131 127 DSDP INITIAL REPORTS 77 535 LOWER VALANGINIAN UPPER BERRIASIAN 655.5 714.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 128.5 133 130.8 DSDP INITIAL REPORTS