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 40 365 RECENT PLEISTOCENE 225.0 233.2 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 0 1.8 0.9 DSDP INITIAL REPORTS 40 365 CENOMANIAN ALBIAN 233.2 329.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 92 108 100 DSDP INITIAL REPORTS 40 365 CAMPANIAN 329.0 329.5 A LEGITIMATE AGE INVERSION NO AGE GIVEN NO AGE GIVEN 70 78 74 DSDP INITIAL REPORTS 40 365 MIOCENE UPPER ALBIAN 396.0 405.0 A LEGITIMATE AGE INVERSION NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 5 104 54.5 DSDP INITIAL REPORTS 40 365 CENOMANIAN UPPER ALBIAN 405.0 405.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 92 104 98 DSDP INITIAL REPORTS 40 365 MIOCENE OLIGOCENE 462.5 687.0 A LEGITIMATE AGE INVERSION NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 5 37.5 21.25 DSDP INITIAL REPORTS