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 60 459 B UPPER PLEISTOCENE 0.0 36.0 MISSING HOLE OR DRILLED INTERVAL NO AGE GIVEN NO AGE GIVEN 0.01 0.7 0.355 DSDP INITIAL REPORTS 60 459 B LOWER PLEISTOCENE 36.0 45.5 NO AGE GIVEN NO AGE GIVEN 1.2 1.8 1.5 DSDP INITIAL REPORTS 60 459 B PLIOCENE 45.5 55.0 NO AGE GIVEN NO AGE GIVEN 1.8 5 3.4 DSDP INITIAL REPORTS 60 459 B LOWER PLIOCENE UPPER MIOCENE 55.0 64.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 3.4 10.5 6.95 DSDP INITIAL REPORTS 60 459 B MIDDLE MIOCENE 64.5 226.0 NO AGE GIVEN NO AGE GIVEN 10.5 16 13.25 DSDP INITIAL REPORTS 60 459 B LOWER MIOCENE 226.0 435.0 NO AGE GIVEN NO AGE GIVEN 16 22.5 19.25 DSDP INITIAL REPORTS 60 459 B LOWER MIOCENE UPPER OLIGOCENE 435.0 454.0 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 16 30 23 DSDP INITIAL REPORTS 60 459 B UPPER OLIGOCENE 454.0 539.5 NO AGE GIVEN NO AGE GIVEN 22.5 30 26.25 DSDP INITIAL REPORTS 60 459 B LOWER OLIGOCENE 539.5 541.0 NO AGE GIVEN NO AGE GIVEN 30 37.5 33.75 DSDP INITIAL REPORTS 60 459 B UPPER EOCENE 541.0 549.0 NO AGE GIVEN NO AGE GIVEN 37.5 43 40.25 DSDP INITIAL REPORTS 60 459 B UPPER EOCENE MIDDLE EOCENE 549.0 558.5 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 37.5 49 43.25 DSDP INITIAL REPORTS