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 73 519 QUATERNARY 0.0 15.3 NO AGE GIVEN NO AGE GIVEN 0 1.8 0.9 DSDP INITIAL REPORTS 73 519 QUATERNARY PLIOCENE 15.3 27.3 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 0 5 2.5 DSDP INITIAL REPORTS 73 519 QUATERNARY MIOCENE 27.3 31.3 A LEGITIMATE AGE INVERSION NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 0 22.5 11.25 DSDP INITIAL REPORTS 73 519 UPPER PLIOCENE 31.3 35.3 NO AGE GIVEN NO AGE GIVEN 1.8 3.4 2.6 DSDP INITIAL REPORTS 73 519 PLIOCENE 35.3 53.9 A LEGITIMATE AGE INVERSION NO AGE GIVEN NO AGE GIVEN 1.8 5 3.4 DSDP INITIAL REPORTS 73 519 PLIOCENE MIOCENE 53.9 57.3 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 1.8 22.5 12.15 DSDP INITIAL REPORTS 73 519 PLIOCENE 57.3 70.5 A LEGITIMATE AGE INVERSION NO AGE GIVEN NO AGE GIVEN 1.8 5 3.4 DSDP INITIAL REPORTS 73 519 LOWER PLIOCENE 70.5 114.5 NO AGE GIVEN NO AGE GIVEN 3.4 5 4.2 DSDP INITIAL REPORTS 73 519 LOWER PLIOCENE UPPER MIOCENE 114.5 118.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 3.4 10.5 6.95 DSDP INITIAL REPORTS 73 519 UPPER MIOCENE 118.5 151.5 NO AGE GIVEN NO AGE GIVEN 5 10.5 7.75 DSDP INITIAL REPORTS