Two samples from the Grímsvötn 2011 eruption were collected and 6 samples from the Bárðarbunga 2014–2015 eruption and they were investigated with regard to grain shape, grain size and grain content using qualitative methods.
Tekin voru tvö sýni úr Grímsvatnagosi 2011 en 6 mismunandi sýni úr Bárðarbungugosi 2014–2015. Rannsókn var gerð á kornalögun, kornastærð og kornagerð með eigindlegum aðferðum.