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 15 148 PLEISTOCENE 0.0 118.0 NO AGE GIVEN NO AGE GIVEN 0.011 1.8 .9055 DSDP INITIAL REPORTS 15 148 PLEISTOCENE UPPER PLIOCENE 118.0 120.2 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 0.011 3.4 1.706 DSDP INITIAL REPORTS 15 148 UPPER PLIOCENE 120.2 137.0 NO AGE GIVEN NO AGE GIVEN 1.8 3.4 2.6 DSDP INITIAL REPORTS 15 148 MIDDLE PLIOCENE 137.0 188.5 NO AGE GIVEN NO AGE GIVEN 3 4 3.5 DSDP INITIAL REPORTS 15 148 LOWER PLIOCENE 193.0 249.0 NO AGE GIVEN NO AGE GIVEN 3.4 5 4.2 DSDP INITIAL REPORTS 15 148 TERTIARY 249.0 272.0 NO AGE GIVEN NO AGE GIVEN 1.8 65 33.4 DSDP INITIAL REPORTS