Table T13. Sr-isotopic data from shells.

Sample depth
Sr value
Corrected
standards
Error
Age
Average
(Ma)
(ft)
(m)
510.5 155.60 0.707853 0.000004 0.000004 62.83
510.5 155.60
No signal




510.5 155.60 0.707847
0.000005 63.16
517.0 157.58
No signal




530.8 161.79 0.707829 0.000004 0.000004 64.15
530.8 161.79 0.707814 0.000004 0.000004 64.98 64.57
536.0 163.37 0.707833
0.000004 63.93
541.9 165.16 0.707852
0.000005 62.89
547.2 166.79 0.707851
0.000005 62.94
562.7 171.51 0.707728
0.000005 69.73
563.6 171.79 0.707754
0.000004 68.29
563.6 171.79 0.707749
0.000004 68.57 68.43
585.8 178.55 0.707654
0.000004 73.81
585.8 178.55 0.707672
0.000004 72.81
585.8 178.55 0.707678
0.000005 72.48 73.03
627.2 191.17 0.707642
0.000006 74.47
666.0 203.00 0.707629
0.000005 75.19
766.0 233.48 0.707639
0.000005 74.63
771.0 235.00 0.707746
0.000005 68.73
774.6 236.10 0.707584
0.000004 77.67
785.8 239.51 0.707646
0.000004 74.25
792.7 241.61 0.707575
0.000005 78.16
818.1 249.36 0.707646
0.000006 74.25
836.6 255.00 0.707574
0.000006 78.22
836.6 255.00 0.707581
0.000004 77.83 78.03
941.0 286.82 0.707592
0.000009 77.23
960.0 292.61 0.707507
0.000004 81.91
964.0 293.83 0.707524
0.000004 80.98
1001.0 305.10 0.707640
0.000005 74.58
1011.0 308.15 0.707545
0.000013 79.82
1015.0 309.37 0.707545
0.000007 79.82
1021.0 311.20 0.707551
0.000024 79.49
1026.0 312.72 0.707507
0.000006 81.91
1037.0 316.08 0.707496
0.000010 82.52
1346.0 410.26 0.707453
0.000004 84.89
1376.8 419.65 0.708073
0.000006 50.70
1376.8 419.65 0.707478
0.000007 83.51
1396.0 425.50 0.707572
0.000004 78.33
1421.0 433.12 0.707815
0.000004 64.93
1431.0 436.17 0.707991
0.000005 55.22
1443.9 440.10 0.707417
0.000004 86.88
1456.6 443.97 0.707422
0.000005 86.60
1464.0 446.23 0.707596
0.000004 77.01