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 21 208 UPPER PLEISTOCENE 0.0 9.0 NO AGE GIVEN NO AGE GIVEN 0.01 0.7 0.355 DSDP INITIAL REPORTS 21 208 PLEISTOCENE 9.0 37.0 NO AGE GIVEN NO AGE GIVEN 0.011 1.8 .9055 DSDP INITIAL REPORTS 21 208 MIDDLE PLIOCENE 37.0 53.0 NO AGE GIVEN NO AGE GIVEN 3 4 3.5 DSDP INITIAL REPORTS 21 208 LOWER PLIOCENE 53.0 89.2 NO AGE GIVEN NO AGE GIVEN 3.4 5 4.2 DSDP INITIAL REPORTS 21 208 LOWER PLIOCENE 89.2 106.0 NO AGE GIVEN NO AGE GIVEN 3.4 5 4.2 DSDP INITIAL REPORTS 21 208 UPPER MIOCENE 106.0 203.0 NO AGE GIVEN NO AGE GIVEN 5 10.5 7.75 DSDP INITIAL REPORTS 21 208 MIDDLE MIOCENE 222.0 296.0 NO AGE GIVEN NO AGE GIVEN 10.5 16 13.25 DSDP INITIAL REPORTS 21 208 LOWER MIOCENE 315.0 434.0 NO AGE GIVEN NO AGE GIVEN 16 22.5 19.25 DSDP INITIAL REPORTS 21 208 UPPER OLIGOCENE 434.0 488.0 NO AGE GIVEN NO AGE GIVEN 22.5 30 26.25 DSDP INITIAL REPORTS 21 208 MIDDLE EOCENE 488.0 539.5 NO AGE GIVEN NO AGE GIVEN 43 49 46 DSDP INITIAL REPORTS 21 208 MIDDLE PALEOCENE 539.5 548.0 NO AGE GIVEN NO AGE GIVEN 58 60 59 DSDP INITIAL REPORTS 21 208 LOWER PALEOCENE 548.0 576.5 NO AGE GIVEN NO AGE GIVEN 60 65 62.5 DSDP INITIAL REPORTS 21 208 MAESTRICHTIAN 576.5 594.0 NO AGE GIVEN NO AGE GIVEN 65 70 67.5 DSDP INITIAL REPORTS