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 geojim56 rated 3 months ago- Featured Link of the Day!From the page: " '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,'said Dr David Pyle of Oxford Universit's Department of Earth Sciences who led the research team with colleague Dr Tamsin Mather. 'These traces only appear as a faint 'background signal' in ice cores but up until now it has still been difficult to explain.'"The team sampled the fumes of two volcanoes; Mount Etna in Sicily and Masaya in Nicaragua. They pumped gases from the edges of the volcanic craters across some gold-plated sand, to measure the volatile metal mercury, and through very fine filters, to capture fume particles. They discovered that the gases at both volcanoes contain high levels of mercury vapour, and that the fume is also very rich in tiny particles, as small as 10-20 nanometres in size."
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