Table T2. Sr isotopic data, Ancora Site.
| Sample
depth (ft) |
Sample
depth (m) |
87Sr/86Sr ratio |
Analytical
error (2  ) |
Age (Ma) |
Age* (Ma) |
|---|---|---|---|---|---|
243.0 |
74.07 |
0.708475 |
0.000027 |
20.2 |
|
255.0 |
77.72 |
0.708425 |
0.000008 |
20.9 |
|
263.0 |
80.16 |
0.708407 |
0.000006 |
21.2 |
|
645.0 |
196.60 |
0.707820 |
0.000010 |
67.3 |
66.2 |
649.2 |
197.88 |
0.707802 |
0.000004 |
68.3 |
67.4 |
653.1 |
199.06 |
0.707749 |
0.000005 |
71.1 |
70.8 |
659.5 |
201.02 |
0.707728 |
0.000005 |
72.2 |
71.6 |
666.5 |
203.15 |
0.707726 |
0.000013 |
72.3 |
71.7 |
676.4 |
206.17 |
0.707713 |
0.000005 |
72.1 |
|
681.5 |
207.72 |
0.707698 |
0.000006 |
72.6 |
|
713.8 |
217.57 |
0.707676 |
0.000005 |
73.3 |
|
740.5 |
225.70 |
0.707792 |
0.000007 |
(68.2) |
|
750.8 |
228.84 |
0.707674 |
0.000022 |
73.4 |
|
776.7 |
236.74 |
0.707753 |
0.000004 |
(70.6) |
|
863.5 |
263.19 |
0.707584 |
0.000005 |
77.4 |
|
892.1 |
271.91 |
0.707657 |
0.000004 |
(74.0) |
|
932.1 |
284.10 |
0.707554 |
0.000022 |
79.1 |
|
1104.9 |
336.77 |
0.707507 |
0.000005 |
(82.2) |
|
1144.2 |
348.75 |
0.707444 |
0.000008 |
(85.0) |
Note: * = Howarth and McArthur (1997).