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 90 591 QUATERNARY 0.0 70.6 NO AGE GIVEN NO AGE GIVEN 0 1.8 0.9 DSDP INITIAL REPORTS 90 591 QUATERNARY UPPER PLIOCENE 70.6 80.2 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 0 3.4 1.7 DSDP INITIAL REPORTS 90 591 UPPER PLIOCENE 80.2 118.3 NO AGE GIVEN NO AGE GIVEN 1.8 3.4 2.6 DSDP INITIAL REPORTS 90 591 UPPER PLIOCENE LOWER PLIOCENE 118.3 127.6 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 1.8 5 3.4 DSDP INITIAL REPORTS 90 591 LOWER PLIOCENE 127.6 174.3 NO AGE GIVEN NO AGE GIVEN 3.4 5 4.2 DSDP INITIAL REPORTS 90 591 LOWER PLIOCENE UPPER MIOCENE 174.3 183.8 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 3.4 10.5 6.95 DSDP INITIAL REPORTS 90 591 LOWER PLIOCENE 183.8 199.9 A LEGITIMATE AGE INVERSION NO AGE GIVEN NO AGE GIVEN 3.4 5 4.2 DSDP INITIAL REPORTS 90 591 UPPER MIOCENE 199.9 283.1 NO AGE GIVEN NO AGE GIVEN 5 10.5 7.75 DSDP INITIAL REPORTS