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 32 303 UPPER PLEISTOCENE 0.0 12.0 NO AGE GIVEN NO AGE GIVEN 0.01 0.7 0.355 DSDP INITIAL REPORTS 32 303 LOWER PLIOCENE 62.0 71.0 NO AGE GIVEN NO AGE GIVEN 3.4 5 4.2 DSDP INITIAL REPORTS 32 303 UPPER MIOCENE 117.0 183.0 NO AGE GIVEN NO AGE GIVEN 5 10.5 7.75 DSDP INITIAL REPORTS 32 303 CENOMANIAN UPPER ALBIAN 211.0 220.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 92 104 98 DSDP INITIAL REPORTS