Scientists from the Universities of Oxford and Cambridge have discovered how volatile metals from volcanoes end up in polar ice cores.

"It has always been a mystery how trace metals, like mercury, with a volcanic signature find their way into polar ice in regions without nearby evidence of volcanic activity" - Dr David Pyle, Department of Earth Sciences, Oxford University.

Read more (http://www.ox.ac.uk/media/news_stories/2008/080625.html)

To the average sedimentary geologist the most basic scientific phenomena are absolute mysteries.

Needless to say, I don't really consider this to be a discovery.

Competent volcanologists have realized the scientific importance of volcanoes since 1804.

Nevertheless, thank you for the link.

Yeah,
Just another tiny piece of the puzzle fitted...