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 70 509 2 2 42.0 42.0 1.00 2.92 7.3 0.9 53.3 LECO WR-12 ANALYZER (total and/or organic) DSDP SHORE LABORATORY 70 509 2 2 44.0 44.0 1.00 2.94 49.0 CARBONATE BOMB (CaCO3 only) DSDP SHIPBOARD 70 509 6 2 80.0 80.0 18.60 20.90 9.0 0.2 73.4 LECO WR-12 ANALYZER (total and/or organic) DSDP SHORE LABORATORY 70 509 6 2 83.0 83.0 18.60 20.93 69.0 CARBONATE BOMB (CaCO3 only) DSDP SHIPBOARD 70 509 7 1 10.0 10.0 23.00 23.10 9.7 0.2 78.8 LECO WR-12 ANALYZER (total and/or organic) DSDP SHORE LABORATORY 70 509 7 3 11.0 11.0 23.00 26.11 81.0 CARBONATE BOMB (CaCO3 only) DSDP SHIPBOARD 70 509 8 1 79.0 79.0 27.40 28.19 9.2 0.2 75.5 LECO WR-12 ANALYZER (total and/or organic) DSDP SHORE LABORATORY 70 509 8 2 80.0 80.0 27.40 29.70 67.0 CARBONATE BOMB (CaCO3 only) DSDP SHIPBOARD