|
Sample/Subsample ID
|
Average depth
(mm) |
10Be (1010 at/g)
|
9Be (1016 at/g)
|
10Be/9Be (10–7)
|
143Nd/144Nd ± 1
|
 Nd ± 2
|
|---|---|---|---|---|---|---|
| Seafloor surface crust (1196-DR-02) | ||||||
| Fk640 | 0.5 | 0.923 ± 0.023 | 7.49 ± 1.12 | 1.233 ± 0.084 | 0.512600 ± 3 | –0.74 ± 0.40 |
| Seafloor surface crust (1196-DR-04) | ||||||
| Fk609 | 0.5 | 0.0973 ± 0.0042 |
|
|
0.512602 ± 10 | –0.70 ± 0.40 |
| Fk610 | 15 | 1.378 ± 0.037 | 12.63 ± 1.89 | 1.091 ± 0.085 | 0.512576 ± 4 | –1.22 ± 0.40 |
| Seafloor surface crust (194-1196B-1R) Fe-rich laminae | ||||||
| Fk628 | 0.5 | 0.683 ± 0.028 | 5.87 ± 0.88 | 1.164 ± 0.069 | 0.512521 ± 10 | –2.29 ± 0.40 |
| Fk629 | 2 | 0.707 ± 0.029 | 7.29 ± 1.09 | 0.970 ± 0.059 | 0.512630 ± 7 | –0.16 ± 0.40 |
| Fk630 | 4 | 1.178 ± 0.046 | 9.52 ± 1.43 | 1.237 ± 0.118 | 0.512622 ± 9 | –0.31 ± 0.40 |
| Fk631 | 6 | 1.175 ± 0.040 |
|
|
0.512602 ± 7 | –0.71 ± 0.40 |
| Fk632 | 8 | 0.878 ± 0.062 | 13.58 ± 2.04 | 0.647 ± 0.057 | 0.512602 ± 8 | –0.69 ± 0.40 |
| Fk633 | 10 | 1.518 ± 0.068 | 11.04 ± 1.66 | 1.376 ± 0.079 | 0.512601 ± 9 | –0.73 ± 0.40 |
| Fk634 | 12 | 1.076 ± 0.034 | 7.00 ± 1.05 | 1.537 ± 0.191 | 0.512646 ± 9 | 0.15 ± 0.40 |
| Mn-rich laminae | ||||||
| Fk635 | 1 | 0.285 ± 0.035 |
|
|
0.512513 ± 15 | –2.43 ± 0.58 |
| Fk636 | 3 | 0.387 ± 0.021 |
|
|
0.512571 ± 6 | –1.31 ± 0.40 |
| Fk637 | 5 | 0.485 ± 0.031 |
|
|
0.512589 ± 5 | –0.96 ± 0.40 |
| Fk638 | 7 | 0.566 ± 0.022 | 4.97 ± 0.75 |
|
0.512604 ± 8 | –0.67 ± 0.40 |
| Fk639 | 9 | 0.298 ± 0.012 |
|
|
0.512596 ± 6 | –0.82 ± 0.40 |
| Deep subsurface crust (194-1194A-14X-1) | ||||||
| Fk641 | 0.3 | 0.041 ± 0.008 | 17.61 ± 2.64 | 0.023 ± 0.005 | 0.512643 ± 15 | 0.10 ± 0.58 |
| Fk642 | 0.8 | 0.0412 ± 0.0049 | 18.25 ± 2.74 | 0.023 ± 0.003 | 0.512613 ± 6 | –0.48 ± 0.40 |
Notes: All samples show comparable 10Be/9Be ratios except for the deep subsurface crust in Section 194-1194A-14X-1. Beryllium concentrations in the Mn-rich part of Core 194-1196B-1R were, with one exception, below detection limit.