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 67 499 B 2 2 49.0 49.0 210.50 212.49 7.5 0.1 62.1 LECO WR-12 ANALYZER (total and/or organic) DSDP SHORE LABORATORY 67 499 B 3 3 12.0 12.0 220.00 223.12 9.5 0.1 78.8 LECO WR-12 ANALYZER (total and/or organic) DSDP SHORE LABORATORY 67 499 B 4 3 26.0 26.0 229.50 232.76 10.6 0.1 87.8 LECO WR-12 ANALYZER (total and/or organic) DSDP SHORE LABORATORY 67 499 B 6 1 92.0 92.0 248.50 249.42 10.5 0.1 86.9 LECO WR-12 ANALYZER (total and/or organic) DSDP SHORE LABORATORY 67 499 B 8 4 36.0 36.0 267.50 272.36 11.3 0.0 93.8 LECO WR-12 ANALYZER (total and/or organic) DSDP SHORE LABORATORY