Ash shows past eruptions 'underestimated'
Wednesday, May 6, 2009 - 12:49
in Paleontology & Archaeology
(PhysOrg.com) -- A study into ash fallout from the biggest volcanic eruption in almost 20 years has shown that the impact of past eruptions is likely to have been significantly underestimated as so much of the evidence quickly disappears, Oxford University scientists report.