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 24 235 PLEISTOCENE 0.0 38.0 NO AGE GIVEN NO AGE GIVEN 0.011 1.8 .9055 DSDP INITIAL REPORTS 24 235 UPPER PLIOCENE 66.5 123.5 NO AGE GIVEN NO AGE GIVEN 1.8 3.4 2.6 DSDP INITIAL REPORTS 24 235 LOWER PLIOCENE 123.5 180.5 NO AGE GIVEN NO AGE GIVEN 3.4 5 4.2 DSDP INITIAL REPORTS 24 235 UPPER MIOCENE 218.5 323.0 NO AGE GIVEN NO AGE GIVEN 5 10.5 7.75 DSDP INITIAL REPORTS 24 235 MIDDLE MIOCENE 368.0 503.5 NO AGE GIVEN NO AGE GIVEN 10.5 16 13.25 DSDP INITIAL REPORTS 24 235 MAESTRICHTIAN 646.0 684.0 NO AGE GIVEN NO AGE GIVEN 65 70 67.5 DSDP INITIAL REPORTS