leg site hole core section top interval depth (cm) bottom interval depth (cm) top of core depth (m) sample depth (m) percent total carbon percent organic carbon percent calcium carbonate (CaCO3) method code data source code 62 464 11 1 68.0 68.0 89.00 89.68 1.4 0.1 10.8 LECO WR-12 ANALYZER (total and/or organic) DSDP SHORE LABORATORY 62 464 12 1 20.0 20.0 98.50 98.70 2.5 0.1 19.8 LECO WR-12 ANALYZER (total and/or organic) DSDP SHORE LABORATORY 62 464 13 CC 10.0 10.0 108.00 108.10 2.7 0.1 22.4 LECO WR-12 ANALYZER (total and/or organic) DSDP SHORE LABORATORY 62 464 16 CC 10.0 10.0 136.50 136.60 4.9 0.1 40.3 LECO WR-12 ANALYZER (total and/or organic) DSDP SHORE LABORATORY