Table 10. Age (Ma) Depth (mcd) 0.000 0.22 0.473 1.77 0.681 2.47 0.780 2.95 0.990 3.85 1.070 4.19 1.770 7.80 1.950 8.57 2.600 12.18 3.054 15.23 3.127 15.74 3.221 16.33 3.325 16.89 3.612 18.82 4.188 22.30 4.320 23.53 4.452 25.24 4.621 26.08 4.801 27.41 4.885 28.15 5.004 28.96 5.240 31.50 5.875 38.57 6.256 43.55 6.554 46.52 7.072 54.16 7.318 55.56 7.351 56.31 7.406 56.55 7.533 58.30 7.618 59.04 8.027 65.60 8.173 68.40 8.205 69.00 8.635 75.06 8.645 75.20