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Composition of icemelt and sediment from Antarctic icebergs and glaciers. |
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| Sample |
Icemelt |
% Fe extracted from Sediment |
|
|
|
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| Icebergs |
Dissolved Fe (nM) |
Ascorbate (%FeA) |
Dithionite (%FeD) |
|
|
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| S1 (Duplicates) |
0.104 0.038 |
0.88 0.67 |
|
| Mean |
0.65 |
0.071 |
0.78 |
| S2 |
0.16 |
0.195 |
0.86 |
| S3 |
N/A |
0.357 |
1.20 |
| S4 (Duplicates) |
0.19 0.104 |
0.95 0.66 |
|
| Mean |
0.30 |
0.15 |
0.81 |
| KG1 (Duplicates) |
0.071 0.042 |
0.33 0.27 |
|
| Mean |
2.2 |
0.057 |
0.30 |
| KG2 (Duplicates) |
0.057 0.059 |
0.42 0.84 |
|
| Mean |
0.13 |
0.058 |
0.63 |
| Iceberg Mean |
0.69 ± 0.87 |
0.15 ± 0.12 |
0.76 ± 0.29 |
| Glaciers |
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| T1 |
0.05 |
0.029 |
0.14 |
| T2 |
0.09 |
0.020 |
0.10 |
| T3 |
3.8 |
0.029 |
0.10 |
| C1 |
2.0 |
0.023 |
0.27 |
| Glacier Mean |
1.5 ± 1.8 |
0.023 ± 0.004 |
0.15 ± 0.05 |
| Iceberg+Glacier Mean |
1.0 ± 1.3 |
0.10 ± 0.11 |
0.52 ± 0.39 |
|
N/A Not available. | |||
Raiswell et al. Geochemical Transactions 2008 9:7 doi:10.1186/1467-4866-9-7 |
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