Table T4. Estimates of carbonate compensation depth through the Eocene.
Site 1218
|
|
Site 1219
|
Estimated CCD (m)
|
Site 1220 paleodepth (m)
|
Interpolated age (Ma)
|
Interpolated average cm3 MAR
|
Interpolated depth (rmcd)
|
Paleodepth (m)
|
Interpolated age (Ma)
|
Interpolated average MAR (cm3)
|
Interpolated depth (rmcd)
|
Paleodepth (m)
|
33.9 |
0.116
|
242.12
|
3741 |
|
|
|
|
|
|
4307 |
34 |
0.01
|
242.98
|
3736 |
|
|
|
|
|
|
4304 |
34.1 |
0.024
|
243.55
|
3730 |
|
|
|
|
|
|
4301 |
34.2 |
0.031
|
243.92
|
3724 |
|
|
|
|
|
|
4297 |
34.3 |
0.016
|
244.29
|
3718 |
|
|
|
|
|
|
4294 |
34.4 |
0.02
|
244.66
|
3712 |
|
|
|
|
|
|
4291 |
34.5 |
0.019
|
245.03
|
3706 |
|
|
|
|
|
|
4287 |
34.6 |
0.013
|
245.39
|
3700 |
|
|
|
|
|
|
4284 |
34.7 |
0.017
|
245.68
|
3694 |
|
|
|
|
|
|
4280 |
34.8 |
0.017
|
245.96
|
3688 |
|
|
|
|
|
|
4277 |
34.9 |
0.034
|
246.24
|
3681 |
|
|
|
|
|
|
4273 |
35 |
0.033
|
246.55
|
3675 |
|
|
|
|
|
|
4270 |
35.1 |
0.019
|
246.89
|
3669 |
|
|
|
|
|
|
4266 |
35.2 |
0.027
|
247.30
|
3662 |
|
|
|
|
|
|
4262 |
35.3 |
0.074
|
247.78
|
3656 |
|
|
|
|
|
|
4259 |
35.4 |
0.081
|
248.35
|
3650 |
|
|
|
|
|
|
4255 |
35.5 |
0.014
|
248.93
|
3644 |
|
|
|
|
|
|
4252 |
35.6 |
0.001
|
249.30
|
3637 |
|
|
|
|
|
3637 |
4248 |
35.7 |
0.001
|
249.66
|
3630 |
|
|
|
|
|
3630 |
4245 |
35.8 |
0.009
|
250.02
|
3624 |
|
|
|
|
|
|
4241 |
35.9 |
0.013
|
250.38
|
3617 |
|
|
|
|
|
|
4238 |
36 |
0.028
|
250.95
|
3610 |
|
|
|
|
|
|
4235 |
36.1 |
0.168
|
251.53
|
3604 |
|
|
|
|
|
|
4231 |
36.2 |
0.222
|
252.10
|
3597 |
|
|
|
|
|
|
4228 |
36.3 |
0.185
|
252.68
|
3590 |
|
|
|
|
|
|
4224 |
36.4 |
0.118
|
253.25
|
3583 |
|
|
|
|
|
|
4221 |
36.5 |
0.059
|
253.83
|
3576 |
|
|
|
|
|
|
4217 |
36.6 |
0.047
|
254.37
|
3569 |
|
|
|
|
|
|
4214 |
36.7 |
0.062
|
254.78
|
3562 |
|
|
|
|
|
|
4210 |
36.8 |
0.047
|
255.19
|
3555 |
|
|
|
|
|
|
4206 |
36.9 |
0.021
|
255.60
|
3548 |
|
|
|
|
|
|
4203 |
37 |
0.022
|
256.02
|
3540 |
|
|
|
|
|
|
4199 |
37.1 |
0.042
|
256.43
|
3533 |
|
|
|
|
|
|
4195 |
37.2 |
0.02
|
256.85
|
3525 |
|
|
|
|
|
|
4191 |
37.3 |
0.031
|
257.26
|
3518 |
|
|
|
|
|
|
4188 |
37.4 |
0.045
|
257.68
|
3510 |
|
|
|
|
|
|
4184 |
37.5 |
0.1
|
258.27
|
3502 |
|
|
|
|
|
|
4181 |
37.6 |
0.184
|
258.96
|
3495 |
|
|
|
|
|
|
4177 |
37.7 |
0.123
|
259.55
|
3487 |
|
|
|
|
|
|
4173 |
37.8 |
0.057
|
259.88
|
3479 |
|
|
|
|
|
|
4169 |
37.9 |
0.058
|
260.26
|
3470 |
|
|
|
|
|
|
4166 |
38 |
0.06
|
260.79
|
3462 |
|
|
|
|
|
|
4162 |
38.1 |
0.054
|
261.20
|
3454 |
|
38.1
|
0.000 |
197.27 |
4080 |
3508 |
4158 |
38.2 |
0.031
|
261.61
|
3445 |
|
38.2
|
0.000 |
197.75 |
4076 |
3476 |
4154 |
38.3 |
0.075
|
262.04
|
3437 |
|
38.3
|
0.000 |
198.25 |
4072 |
3512 |
4150 |
38.4 |
0.192
|
262.47
|
3428 |
|
38.4
|
0.000 |
198.80 |
4069 |
3620 |
4147 |
38.5 |
0.176
|
263.01
|
3419 |
|
38.5
|
0.000 |
199.16 |
4065 |
3595 |
4143 |
38.6 |
0.441
|
263.82
|
3410 |
|
38.6
|
0.002 |
199.77 |
4061 |
4064 |
4139 |
38.7 |
0.717
|
264.74
|
3402 |
|
38.7
|
0.038 |
200.85 |
4058 |
4095 |
4135 |
38.8 |
0.412
|
265.69
|
3393 |
|
38.8
|
0.037 |
202.21 |
4055 |
4120 |
4132 |
38.9 |
0.313
|
266.35
|
3383 |
|
38.9
|
0.007 |
202.53 |
4051 |
4066 |
4128 |
39 |
0.331
|
267.03
|
3374 |
|
39
|
0.017 |
203.19 |
4047 |
4083 |
4124 |
39.1 |
0.218
|
267.59
|
3364 |
|
39.1
|
0.026 |
203.99 |
4043 |
4135 |
4120 |
39.2 |
0.219
|
268.01
|
3354 |
|
39.2
|
0.025 |
204.47 |
4039 |
4127 |
4117 |
39.3 |
0.201
|
268.68
|
3344 |
|
39.3
|
0.007 |
205.10 |
4036 |
4061 |
4113 |
39.4 |
0.113
|
269.18
|
3334 |
|
39.4
|
0.002 |
206.08 |
4032 |
4045 |
4109 |
39.5 |
0.06
|
269.59
|
3324 |
|
39.5
|
0.000 |
206.58 |
4028 |
3380 |
4105 |
39.6 |
0.043
|
270.33
|
3313 |
|
39.6
|
0.000 |
207.28 |
4025 |
3360 |
4101 |
39.7 |
0.043
|
271.10
|
3302 |
|
39.7
|
0.000 |
208.02 |
4021 |
3350 |
4098 |
39.8 |
0.046
|
271.90
|
3291 |
|
39.8
|
0.000 |
209.37 |
4017 |
3340 |
4094 |
39.9 |
0.028
|
272.62
|
3280 |
|
39.9
|
0.000 |
210.19 |
4014 |
3310 |
4090 |
40 |
0.005
|
273.23
|
3269 |
|
40
|
0.000 |
210.77 |
4010 |
3270 |
4087 |
40.1 |
0
|
273.97
|
3257 |
|
40.1
|
0.000 |
211.61 |
4006 |
<3257 |
4083 |
40.2 |
0.003
|
274.57
|
3244 |
|
40.2
|
0.000 |
212.19 |
4002 |
3250 |
4078 |
40.3 |
0.013
|
275.15
|
3232 |
|
40.3
|
0.000 |
212.60 |
3998 |
3250 |
4074 |
40.4 |
0.045
|
275.76
|
3219 |
|
40.4
|
0.000 |
213.08 |
3994 |
3260 |
4070 |
40.5 |
0.051
|
276.42
|
3205 |
|
40.5
|
0.000 |
213.75 |
3990 |
3260 |
4067 |
40.6 |
0.147
|
277.16
|
3191 |
|
40.6
|
0.000 |
214.41 |
3986 |
3340 |
4063 |
40.7 |
0.283
|
278.31
|
3177 |
|
40.7
|
0.009 |
215.42 |
3983 |
4009 |
4059 |
40.8 |
0.534
|
279.71
|
3163 |
|
40.8
|
0.080 |
216.88 |
3979 |
4123 |
4056 |
40.9 |
0.79
|
281.58
|
3148 |
|
40.9
|
0.232 |
218.76 |
3976 |
4320 |
4052 |
41 |
0.693
|
282.87
|
3132 |
|
41
|
0.234 |
219.98 |
3973 |
4402 |
4048 |
41.1 |
1.091
|
284.71
|
3116 |
|
41.1
|
0.210 |
220.92 |
3969 |
4172 |
4044 |
41.2 |
1.408
|
287.16
|
3099 |
|
41.2
|
0.242 |
222.72 |
3966 |
4146 |
4040 |
41.3 |
1.545
|
289.64
|
3081 |
|
41.3
|
0.252 |
223.64 |
3962 |
4134 |
4035 |
41.4 |
1.323
|
291.93
|
3061 |
|
41.4
|
0.250 |
225.02 |
3958 |
4167 |
4031 |
41.5 |
0.804
|
293.27
|
3039 |
|
41.5
|
0.125 |
225.98 |
3954 |
4122 |
4027 |
|
|
|
|
|
41.6
|
0.022 |
226.43 |
3950 |
3970 |
4022 |
|
|
|
|
|
41.7
|
0.027 |
226.58 |
3946 |
3970 |
4018 |
|
|
|
|
|
41.8
|
0.032 |
226.83 |
3941 |
3970 |
4014 |
|
|
|
|
|
41.9
|
0.029 |
227.14 |
3937 |
3970 |
4010 |
|
|
|
|
|
42
|
0.019 |
227.66 |
3932 |
3950 |
4005 |
|
|
|
|
|
42.1
|
0.019 |
228.17 |
3928 |
3950 |
4001 |
|
|
|
|
|
42.2
|
0.013 |
228.68 |
3924 |
3940 |
3997 |
|
|
|
|
|
42.3
|
0.005 |
229.20 |
3919 |
3920 |
3992 |
|
|
|
|
|
42.4
|
0.011 |
229.71 |
3915 |
3930 |
3988 |
|
|
|
|
|
42.5
|
0.015 |
230.23 |
3911 |
3930 |
3984 |
|
|
|
|
|
42.6
|
0.007 |
230.74 |
3906 |
3910 |
3979 |
|
|
|
|
|
42.7
|
0.004 |
231.25 |
3902 |
3910 |
3975 |
|
|
|
|
|
42.8
|
0.010 |
231.76 |
3897 |
3910 |
3971 |
|
|
|
|
|
42.9
|
0.013 |
232.28 |
3893 |
3910 |
3967 |
|
|
|
|
|
43
|
0.015 |
232.79 |
3888 |
3900 |
3963 |
|
|
|
|
|
43.1
|
0.016 |
233.39 |
3884 |
3900 |
3959 |
|
|
|
|
|
43.2
|
0.010 |
233.95 |
3879 |
3890 |
3954 |
|
|
|
|
|
43.3
|
0.004 |
234.33 |
3875 |
3880 |
3950 |
|
|
|
|
|
43.4
|
0.002 |
234.85 |
3870 |
3870 |
3946 |
|
|
|
|
|
43.5
|
0.001 |
235.36 |
3865 |
|
3942 |
|
|
|
|
|
43.6
|
0.003 |
235.87 |
3861 |
3860 |
3937 |
|
|
|
|
|
43.7
|
0.005 |
236.38 |
3856 |
3860 |
3933 |
|
|
|
|
|
43.8
|
0.005 |
236.90 |
3851 |
3860 |
3929 |
|
|
|
|
|
43.9
|
0.005 |
237.42 |
3847 |
3850 |
3924 |
|
|
|
|
|
44
|
0.003 |
237.93 |
3842 |
3850 |
3920 |
|
|
|
|
|
44.1
|
0.000 |
238.46 |
3837 |
|
3916 |
|
|
|
|
|
44.2
|
0.013 |
238.95 |
3833 |
3850 |
3911 |
|
|
|
|
|
44.3
|
0.052 |
239.47 |
3828 |
3880 |
3907 |
|
|
|
|
|
44.4
|
0.072 |
239.99 |
3823 |
3900 |
3899 |
|
|
|
|
|
44.5
|
0.071 |
240.49 |
3818 |
3890 |
3894 |
|
|
|
|
|
44.6
|
0.089 |
241.01 |
3813 |
3900 |
3890 |
|
|
|
|
|
44.7
|
0.046 |
241.51 |
3808 |
3850 |
3885 |
|
|
|
|
|
44.8
|
0.020 |
242.04 |
3803 |
3820 |
3881 |
|
|
|
|
|
44.9
|
0.016 |
242.55 |
3798 |
3810 |
3876 |
|
|
|
|
|
45
|
0.025 |
243.05 |
3793 |
3820 |
3872 |
|
|
|
|
|
45.1
|
0.033 |
243.51 |
3788 |
3820 |
3867 |
|
|
|
|
|
45.2
|
0.053 |
243.95 |
3783 |
3840 |
3863 |
|
|
|
|
|
45.3
|
0.073 |
244.34 |
3778 |
3850 |
3858 |
|
|
|
|
|
45.4
|
0.073 |
244.63 |
3773 |
3850 |
3853 |
|
|
|
|
|
45.5
|
0.036 |
244.91 |
3767 |
3800 |
3848 |
|
|
|
|
|
45.6
|
0.004 |
245.18 |
3762 |
3770 |
3843 |
|
|
|
|
|
45.7
|
0.009 |
245.45 |
3757 |
3770 |
3838 |
|
|
|
|
|
45.8
|
0.016 |
245.73 |
3751 |
3770 |
3833 |
|
|
|
|
|
45.9
|
0.010 |
246.00 |
3746 |
3760 |
3828 |
|
|
|
|
|
46
|
0.001 |
246.27 |
3740 |
|
3823 |
|
|
|
|
|
46.1
|
0.000 |
246.54 |
3735 |
|
3819 |
|
|
|
|
|
46.2
|
0.000 |
246.81 |
3729 |
|
3814 |
|
|
|
|
|
46.3
|
0.001 |
247.09 |
3724 |
|
3809 |
|
|
|
|
|
46.4
|
0.001 |
247.36 |
3718 |
|
3804 |
|
|
|
|
|
46.5
|
0.001 |
247.64 |
3712 |
|
3799 |
|
|
|
|
|
46.6
|
0.002 |
247.90 |
3707 |
3710 |
3794 |
|
|
|
|
|
46.7
|
0.001 |
248.18 |
3701 |
|
3789 |
|
|
|
|
|
46.8
|
0.001 |
248.45 |
3695 |
|
3784 |
|
|
|
|
|
46.9
|
0.004 |
248.72 |
3689 |
3690 |
3778 |
|
|
|
|
|
47
|
0.012 |
249.00 |
3684 |
3700 |
3773 |
|
|
|
|
|
47.1
|
0.024 |
249.26 |
3678 |
3700 |
3768 |
|
|
|
|
|
47.2
|
0.017 |
249.54 |
3672 |
3690 |
3763 |
|
|
|
|
|
47.3
|
0.007 |
249.81 |
3666 |
3670 |
3758 |
|
|
|
|
|
47.4
|
0.009 |
250.08 |
3660 |
3670 |
3752 |
|
|
|
|
|
47.5
|
0.009 |
250.36 |
3654 |
3660 |
3747 |
|
|
|
|
|
47.6
|
0.010 |
250.63 |
3648 |
3660 |
3742 |
|
|
|
|
|
47.7
|
0.010 |
250.90 |
3642 |
3650 |
3736 |
|
|
|
|
|
47.8
|
0.008 |
251.17 |
3635 |
3640 |
3731 |
|
|
|
|
|
47.9
|
0.003 |
251.44 |
3629 |
3630 |
3725 |
|
|
|
|
|
48
|
0.001 |
251.72 |
3623 |
|
3720 |
|
|
|
|
|
48.1
|
0.001 |
252.00 |
3616 |
|
3714 |
|
|
|
|
|
48.2
|
0.001 |
252.26 |
3610 |
|
3708 |
|
|
|
|
|
48.3
|
0.001 |
252.53 |
3604 |
|
3703 |
|
|
|
|
|
48.4
|
0.001 |
252.81 |
3597 |
|
3697 |
|
|
|
|
|
48.5
|
0.001 |
253.08 |
3591 |
|
3691 |
|
|
|
|
|
48.6
|
0.000 |
253.35 |
3584 |
|
3686 |
|
|
|
|
|
48.7
|
0.000 |
253.62 |
3577 |
|
3680 |
|
|
|
|
|
48.8
|
0.000 |
253.90 |
3571 |
|
3674 |
|
|
|
|
|
48.9
|
0.000 |
254.17 |
3564 |
|
3668 |
|
|
|
|
|
49
|
0.000 |
254.44 |
3557 |
|
3662 |
|
|
|
|
|
49.1
|
0.000 |
254.72 |
3550 |
|
3656 |
|
|
|
|
|
49.2
|
0.000 |
254.99 |
3543 |
|
3650 |
|
|
|
|
|
49.3
|
0.000 |
255.26 |
3536 |
|
3644 |
|
|
|
|
|
49.4
|
0.000 |
255.53 |
3529 |
|
3637 |
|
|
|
|
|
49.5
|
0.000 |
255.80 |
3522 |
|
3631 |
|
|
|
|
|
49.6
|
0.000 |
256.08 |
3514 |
|
3625 |
|
|
|
|
|
49.7
|
0.000 |
256.35 |
3507 |
|
3618 |
|
|
|
|
|
49.8
|
0.000 |
256.62 |
3500 |
|
3612 |
|
|
|
|
|
49.9
|
0.000 |
256.89 |
3492 |
|
3605 |
Notes: Mass accumulation rates (MARs) are averaged over 100-k.y. intervals. Carbonate compensation depth (CCD) estimates in plain text are one-site estimates assuming 0.001 g/cm2/k.y. loss of CaCO3 per additional meter of water depth. CCD estimates in bold text are estimates using both Sites 1218 and 1219. CCD estimates in italics are extrapolations of the CCD assuming a decrease of roughly 0.001 g CaCO3/cm2/k.y. per additional meter of water depth near the CCD.