Table 1.

Composition of icemelt and sediment from Antarctic icebergs and glaciers.

Sample	Icemelt	% Fe extracted from Sediment
Icebergs	Dissolved Fe (nM)	Ascorbate (%FeA)	Dithionite (%FeD)
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
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.