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 94 610 UPPER PLEISTOCENE LOWER PLEISTOCENE 0.0 19.2 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 0.01 1.8 0.905 INITIAL CORE DESCRIPTIONS 94 610 LOWER PLEISTOCENE 19.2 48.0 NO AGE GIVEN NO AGE GIVEN 1.2 1.8 1.5 INITIAL CORE DESCRIPTIONS 94 610 UPPER PLIOCENE 147.0 185.4 NO AGE GIVEN NO AGE GIVEN 1.8 3.4 2.6 INITIAL CORE DESCRIPTIONS 94 610 LOWER PLIOCENE 233.4 243.0 NO AGE GIVEN NO AGE GIVEN 3.4 5 4.2 INITIAL CORE DESCRIPTIONS 94 610 UPPER MIOCENE 300.6 358.2 NO AGE GIVEN NO AGE GIVEN 5 10.5 7.75 INITIAL CORE DESCRIPTIONS 94 610 UPPER MIOCENE MIDDLE MIOCENE 358.2 415.8 NO AGE GIVEN NO AGE GIVEN NO AGE GIVEN 5 16 10.5 INITIAL CORE DESCRIPTIONS 94 610 MIDDLE MIOCENE 454.2 646.2 NO AGE GIVEN NO AGE GIVEN 10.5 16 13.25 INITIAL CORE DESCRIPTIONS 94 610 LOWER MIOCENE 646.2 723.0 NO AGE GIVEN NO AGE GIVEN 16 22.5 19.25 INITIAL CORE DESCRIPTIONS