The Eyjafjallajökull 1821 eruption from the Eyjafjallajökull (Eyjafjöll) Volcanic System

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This very small eruption produced fine grained white tephra which is found as a thin discontinuous white tephra layer in soil profiles close to the volcano. Tephra deposits are usually found only within 10 km of the volcano. A jökulhlaup was also produced by this eruption, the flood emerged from the Gígjökull glacier which flows to the north of the volcano. The tephra produced by this eruption is highly silicic (68 to 70% SiO2).


The data on this page is from the following source(s). If you use this data please acknowledge the source of the data.

Larsen, G., Dugmore, A., J. and Newton, A.J. (1999) Geochemistry of historic silicic tephras in Iceland. The Holocene  9(4), 463-471..

Simkin, T., Siebert, L., Blong, R.J. and Russell, J. (1994) Volcanoes of the world : a regional directory, gazetteer, and chronology of volcanism during the last 10,000 years  Geoscience Press, Tucson, with the Smithsonian Institution,349..

Data Sources

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This Tephrabase search was made on 29/9/2021 at 01:56:40 local time, Edinburgh, Scotland, UK.