Global ETD Search
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Showing 1 to 2 of 2 for “"Super-volcano"”.
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Analysis of microbes in Greenland ice cores from periods of high and low atmospheric carbon dioxide levels
… was reported in Iceland, Alaska, and from a super volcano in Italy during the 10,500 ybp time period. The 157,000 ybp sample also contained a large number of Proteobacteria and Firmicute species, a few Actinobacteria and Cyanobacteria, but most were common soil bacteria, as well as animal …
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Geochemical and sedimentological investigations of Youngest Toba Tuff ashfall deposits
The ~ 73 ka ‘super-eruption’ of the Toba caldera in Sumatra is the largest known eruption of the Quaternary. The products of this eruption, the Youngest Toba Tuff (YTT), have been implicated in global and regional climate deterioration with widespread ecological effects. In this thesis I study the …