This page contains the results of your search. It is divided into two sections. The first contains information about the eruption and the second part contains details about the source references and the date and time of the search. Click on the volcanic system name to retrieve more information.
| Source: | Hekla Volcanic System |
|---|---|
| Eruption site: | Hekla |
| VEI: | 4 |
| Lava volume: | n/a |
| Tephra volume: | 0.230 km3 |
| Start Date: | 02 September 1845 AD |
| End: | 10 April 1846 AD |
The volume of tephra is calculated as freshly fallen. The initial phase was Plinian and the main period of tephra fall (80% of the total) lasted about 4 hours. This tephra fell mainly to the south-east, east and north-east of Hekla. Tephra fall occurred throughout this eurption. Later activity affected the west and north-west. The SiO2 content of the tephra is around 60%. It was this later tephra fall which caused most damage to livestock through fluorosis. There are contemporary records which suggest that the tephra from this eruption fell on the Faroe Islands, Orkney and Shetland.
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.
Thorarinsson, S. (1967) The eruption of Hekla in historical times. A tephrochronological study. The eruption of Hekla 1947-1948 I, 1-183
Thorarinsson, S. (1981) Greetings From Iceland - ash-falls and volcanic aerosols in Scandinavia. Geografiska Annaler Series A 63(3-4), 109-110
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This Tephrabase search was made on 6/8/2025 at 14:20:02 local time, Edinburgh, Scotland, UK.