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Lead depth profiles

Pacific Ocean 33o N, 155o W

Atlantic Ocean 34o N, 66o W

Depth (m)

Pb (pmol/kg)

Depth (m)

Pb (pmol/kg)

0.2

65.7

0.2

160

75

58.9

35

150

200

63.3

100

160

400

67.6

150

160

600

43.0

400

170

800

27.5

600

150

1000

21.7

750

130

2000

9.7

1000

77

2500

6.3

1470

77

3000

8.2

2070

43

3500

4.8

2440

27

4000

5.3

2980

26

Schaule, B. K. and Patterson, C. C., 1981. Lead concentrations in the Northeast Pacific:

evidence for global anthropogenic perturbations. Earth Planet. Sci. Lett., 54: 97-116.

Schaule, B. K. and Patterson, C. C., 1983. Perturbations of the natural lead depth

profile in the Sargasso Sea by industrial lead. In Trace Metals in Seawater,

C. S. Wong, E. Boyle, K. W. Bruland, J. D. Burton and E. D. Goldberg, eds., Plenum.