Depth 36m, approximate age 50 kyr before present: material CAMS Lab 14C age error total 6923 B 27470 110 total 6924 B 26580 110 total 7562 B 25370 290 humate 6928 B 29550 190 humin 6926 B 31760 180 Depth 55m, approximate age 80 kyr before present: material CAMS Lab 14C age error total 6921 B 35030 150 total 7563 B 35190 990 total 6922 B 36730 130 humate 6927 B 38430 170 humin 6925 B 36730 240