depth (cm) d18O C 12.0 3.38 23.0 3.46 33.0 3.77 43.0 4.14 53.0 4.47 63.0 4.99 73.0 4.99 87.0 4.90 100.0 4.56 113.0 4.76 123.0 4.74 133.0 4.64 145.0 4.49 159.0 4.56 169.0 4.48 179.0 4.44 187.0 4.51 198.0 4.35 207.0 4.37 218.0 4.43 228.0 4.33 238.0 4.35 247.0 4.34 259.0 4.46 267.0 4.35 278.0 4.50 287.0 4.33 296.0 4.36 309.0 4.35 318.0 4.47 328.0 4.42 339.0 4.50 348.0 4.48 357.0 4.11 367.0 4.33 378.0 3.98 388.0 4.04 399.0 3.90 410.0 4.06 420.0 4.09 428.0 4.08 437.0 4.01 443.0 3.91 446.0 3.93 455.0 3.76 467.0 4.03 479.0 3.82 490.0 3.40 502.0 3.52 512.0 3.13 522.0 2.98 532.0 3.25 542.0 4.05 552.0 4.18 562.0 4.71 572.0 4.88 582.0 4.37 592.0 4.70 602.0 4.76 613.0 4.69 623.0 4.61 633.0 4.47 643.0 4.59 653.0 4.53 663.0 4.66 672.0 4.68 682.0 4.66 691.0 4.57 700.0 4.47 709.0 4.43 718.0 4.39 727.0 4.30 736.0 4.26 745.0 4.24 753.0 4.32 762.0 4.30 771.0 4.30 779.0 4.46 788.0 4.07 795.0 3.95 803.0 4.03 810.0 4.00 818.0 3.62 826.0 3.82 834.0 3.71 842.0 3.60 850.0 3.53 859.0 3.45 868.0 3.80 877.0 4.32 887.0 4.41 898.0 4.07 908.0 4.20 919.0 4.05 929.0 3.85 940.0 3.73 949.0 3.74 958.0 4.16 968.0 4.15 978.0 4.42 987.0 4.53 996.0 4.47 1006.0 4.51 1016.0 4.46 1027.0 4.47 1038.0 4.38 1050.0 4.39 1055.0 4.42 1061.0 4.27 1071.0 4.49 1073.0 4.39 1084.0 4.48 1091.0 4.27 1094.0 4.24 1103.0 4.05 1112.0 4.01 1120.0 3.81 1123.0 3.87 1128.0 3.84 1132.0 3.94 1136.0 3.95 1141.0 3.85 1149.0 3.89 1159.0 4.12 1171.0 4.03 1180.0 3.96 1187.0 4.14 1194.0 3.90 1203.0 3.87 1209.0 3.83 1220.0 3.85 1233.0 3.59 1238.0 3.80 1243.0 3.72 1251.0 4.05 1253.0 3.74 1262.0 3.25 1264.0 3.25 1271.0 3.36 1279.0 3.47 1281.0 3.74 1297.0 3.73 1305.0 3.92 1318.0 4.64 1320.0 4.28 1327.0 4.63 1329.0 4.43 1333.0 4.57 1337.0 4.75 1339.0 4.61 1346.0 4.61 1354.0 4.71 1356.0 4.41 1367.0 4.55 1377.0 4.55 1385.0 4.63 1391.0 4.53 1396.0 4.59 1402.0 4.52 1408.0 4.93 1418.0 4.21 1432.0 4.08 1446.0 4.55 1459.0 4.13 1469.0 4.13 1477.0 4.11 1486.0 4.01 1495.0 4.09 1506.0 3.92 1518.0 3.72 1533.0 3.80 1542.0 3.51 1547.0 3.52 1552.0 3.20 1560.0 3.21 1563.0 3.26 1574.0 3.07 1585.0 3.31 1595.0 3.34 1606.0 3.48 1617.0 3.71 1627.0 4.34 1641.0 4.53 1651.0 4.81 1661.0 4.93 1671.0 4.92 1682.0 5.01 1692.0 4.92 1702.0 4.51 1711.0 4.70 1731.0 4.46 1741.0 4.46 1751.0 4.53 1761.0 4.46 1771.0 4.44 1790.0 4.43 1793.0 4.52 1800.0 4.55 1803.0 4.45 1810.0 4.64 1820.0 4.71 1830.0 4.59 1841.0 4.61 1851.0 4.64 1861.0 4.43 1871.0 4.26 1881.0 4.04 1891.0 4.08 1905.0 3.93 1915.0 3.82 1925.0 3.82 1935.0 4.35 1945.0 3.87 1955.0 3.94 1965.0 3.68 1975.0 4.12 1985.0 4.21 1995.0 4.26 2005.0 4.39 2015.0 4.38 2025.0 4.26 2027.0 4.07 2035.0 4.12 2043.0 4.08 2051.0 4.10 2061.0 4.26 2070.0 4.38 2081.0 4.37 2091.0 4.34 2106.0 4.48 2121.0 4.20 2137.0 4.33 2146.0 4.21 2156.0 4.12 2162.0 3.91 2168.0 3.88 2176.0 3.94 2183.0 3.74 2190.0 3.72 2201.0 3.58 2215.0 3.87 2228.0 4.35 2241.0 4.40 2250.0 4.21 2260.0 4.04 2270.0 4.01 2278.0 4.08 2287.0 4.01 2295.0 3.79 2301.0 4.02 2308.0 4.18 2314.0 4.39 2322.0 4.88 2330.0 4.78 2339.0 5.10 2348.0 4.79 2356.0 4.93 2365.0 4.99 2376.0 4.86 2383.0 4.76 2397.0 4.81 2408.0 4.67 2421.0 4.73 2430.0 4.73 2440.0 4.74 2448.0 4.72 2460.0 4.59 2471.0 4.55 2476.0 4.61 2483.0 4.54 2488.0 4.51 2494.0 4.47 2501.0 4.33 2507.0 4.55 2509.0 4.32 2520.0 4.55 2530.0 4.42 2536.0 4.38 2540.0 4.56 2543.0 4.42 2546.0 4.49 2549.0 4.44 2553.0 4.43 2558.0 4.03 2600.0 4.48 2624.0 4.63 2633.0 4.59 2639.0 4.64 2644.0 4.43 2649.0 4.23 2657.0 4.18 2671.0 4.27 2707.0 4.39 2728.0 4.30 2737.0 4.41 2744.0 4.34 2749.0 4.52 2756.0 4.65 2773.0 4.47 2785.0 4.47 2798.0 4.31 2809.0 4.11 2819.0 4.16 2829.0 4.03 2839.0 3.94 2848.0 3.98 2858.0 3.73 2868.0 3.68 2878.0 3.66 2889.0 3.77 2899.0 4.03 2908.0 4.14 2927.0 3.97 2937.0 4.68 2948.0 4.63 2959.0 4.60 2969.0 4.41 2978.0 4.44 2987.0 4.08 2997.0 4.38 3008.0 4.30 3018.0 4.17 3028.0 4.01 3038.0 3.86 3047.0 4.12 3078.0 4.05 3088.0 4.03 3098.0 4.06 3108.0 3.99 3118.0 3.77 3128.0 3.67 3138.0 3.72 3149.0 3.85 3159.0 4.04 3168.0 3.59 3178.0 3.62 3189.0 3.94 3202.0 4.46 3216.0 4.44 3232.0 4.79 3246.0 4.69 3257.0 4.78 3266.0 4.72 3274.0 4.56 3282.0 4.46 3291.0 4.54 3302.0 4.51 3315.0 4.45 3326.0 4.46 3333.0 4.05 3339.0 4.17 3343.0 4.22 3348.0 4.15 3353.0 4.09 3360.0 4.15 3370.0 4.15 3391.0 4.26 3414.0 4.40 3427.0 4.53 3435.0 4.46 3440.0 4.47 3443.0 4.24 3454.0 4.23 3467.0 4.03 3477.0 3.95 3488.0 3.51 3498.0 3.76 3509.0 3.63 3519.0 3.53 3529.0 3.39 3539.0 3.34 3548.0 4.08 3558.0 3.81 3578.0 4.21 3588.0 3.98 3598.0 3.89 3608.0 3.83 3618.0 3.70 3628.0 3.94 3638.0 4.00 3648.0 3.81 3657.0 3.96 3667.0 4.09 3676.0 4.06 3678.0 4.22 3687.0 4.23 3696.0 3.78 3698.0 4.06 3706.0 3.64 3708.0 3.90 3716.0 3.86 3718.0 4.35 3726.0 4.18 3736.0 4.41 3746.0 4.47 3755.0 4.38 3765.0 4.32 3775.0 4.21 3785.0 4.28 3794.0 4.23