Figure 1 (IMAGE)

CNRS

Figure 1

Caption

(a) Lead concentrations in ice in Greenland (blue) and in the Col du Dôme (CDD, red). (b) Lead (red) and antimony (green) concentrations in ice from the CDD. On the bottom scale, age is indicated in years, from 1 A.D. onwards). Phases of increasing lead emissions were accompanied by a simultaneous rise in the presence of antimony - another toxic metal - in the alpine ice.

Credit

Preunkert <em>et al</em>./CNRS Photo library

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