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 80 549 QUATERNARY 0.0 9.5 NO AGE GIVEN NO AGE GIVEN 0 1.8 0.9 DSDP INITIAL REPORTS 80 549 UPPER OLIGOCENE 9.5 94.0 NO AGE GIVEN NO AGE GIVEN 22.5 30 26.25 DSDP INITIAL REPORTS 80 549 UPPER EOCENE 94.0 198.5 NO AGE GIVEN NO AGE GIVEN 37.5 43 40.25 DSDP INITIAL REPORTS 80 549 MIDDLE EOCENE 198.5 274.5 NO AGE GIVEN NO AGE GIVEN 43 49 46 DSDP INITIAL REPORTS 80 549 LOWER EOCENE 274.5 331.5 NO AGE GIVEN NO AGE GIVEN 49 53.5 51.25 DSDP INITIAL REPORTS 80 549 UPPER PALEOCENE 331.5 379.0 NO AGE GIVEN NO AGE GIVEN 53.5 60 56.75 DSDP INITIAL REPORTS 80 549 UPPER MAESTRICHTIAN 379.0 388.5 NO AGE GIVEN NO AGE GIVEN 65 67.5 66.25 DSDP INITIAL REPORTS 80 549 LOWER MAESTRICHTIAN 388.5 398.0 NO AGE GIVEN NO AGE GIVEN 67.5 70 68.75 DSDP INITIAL REPORTS 80 549 UPPER CAMPANIAN 398.0 407.5 NO AGE GIVEN NO AGE GIVEN 70 74 72 DSDP INITIAL REPORTS 80 549 SANTONIAN 407.5 417.0 NO AGE GIVEN NO AGE GIVEN 78 82 80 DSDP INITIAL REPORTS 80 549 SANTONIAN CONIACIAN 417.0 426.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 78 86 82 DSDP INITIAL REPORTS 80 549 LOWER SANTONIAN CONIACIAN 426.5 436.0 A LEGITIMATE AGE INVERSION NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 80 86 83 DSDP INITIAL REPORTS 80 549 TURONIAN CENOMANIAN 436.0 445.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 86 100 93 DSDP INITIAL REPORTS 80 549 UPPER CENOMANIAN MIDDLE CENOMANIAN 445.5 455.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 92 97.5 94.75 DSDP INITIAL REPORTS 80 549 MIDDLE CENOMANIAN LOWER CENOMANIAN 455.0 464.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 95 100 97.5 DSDP INITIAL REPORTS 80 549 MIDDLE ALBIAN 483.5 626.0 NO AGE GIVEN NO AGE GIVEN 104 106 105 DSDP INITIAL REPORTS 80 549 MIDDLE ALBIAN LOWER ALBIAN 626.0 635.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 104 108 106 DSDP INITIAL REPORTS 80 549 LOWER ALBIAN 635.5 673.5 NO AGE GIVEN NO AGE GIVEN 106 108 107 DSDP INITIAL REPORTS 80 549 UPPER BARREMIAN 673.5 692.0 NO AGE GIVEN NO AGE GIVEN 115 118 116.5 DSDP INITIAL REPORTS 80 549 UPPER BARREMIAN LOWER BARREMIAN 692.0 701.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 115 121 118 DSDP INITIAL REPORTS 80 549 LOWER BARREMIAN 701.0 737.0 NO AGE GIVEN NO AGE GIVEN 118 121 119.5 DSDP INITIAL REPORTS 80 549 BARREMIAN 737.0 755.0 A LEGITIMATE AGE INVERSION NO AGE GIVEN NO AGE GIVEN 115 121 118 DSDP INITIAL REPORTS 80 549 MIDDLE BARREMIAN 794.5 797.0 NO AGE GIVEN NO AGE GIVEN 118 119.5 118.8 DSDP INITIAL REPORTS 80 549 LOWER BARREMIAN 801.5 919.5 NO AGE GIVEN NO AGE GIVEN 118 121 119.5 DSDP INITIAL REPORTS