Table T2. Intervals of intact chert layers recovered, Site 1218.
Core, section,
interval (cm)
Depth (mbsf)
Top
Bottom
199-1218A-

25X-1, 49-61 225.19 225.31
25X-1, 94-106 225.64 225.76
25X-1, 139-146 226.09 226.16
25X-2, 22-32 226.42 226.52
25X-2, 48-61 226.68 226.81
27X-1, 20-29 244.10 244.19
27X-1, 34-41 244.24 244.31
199-1218B-

25X-1, 12-32 223.42 223.62
25X-1, 37-55 223.67 223.85
25X-1, 104-110 224.34 224.40
25X-1, 114-122 224.44 224.52
25X-1, 129-141 224.59 224.71
199-1218C-

18X-3, 90-100 226.97 227.07
18X-3, 141 to 18X-4, 4 227.48 227.61
18X-4, 29-35 227.86 227.92
18X-4, 60-70 228.17 228.27
18X-4, 75-85 228.32 228.42
19X-5, 137-146 239.97 240.06
20X-1, 127-147 243.47 243.67
20X-2, 119-120 244.89 244.90