![]() The eruption lasted for 6 weeks in the spring. 1554 - Vondubjallar southwest of Hekla.Extensive land degradation in Rangárvallasýsla as a result. The largest Hekla lava field from historical times. A large eruption with heavy ash fall to the south. Eruption on a long fissure in Veiðivötn (:is:Veiðivötn) west of Vatnajökull. 1422 - off Reykjanes an island is formed and lasts for several years.Norðurhraun lava flows, Skarð, Tjaldastaðir and maybe more towns are subsumed. 1389-1390 - in and around Hekla, eruption number 7.Jökulhlaup to Skeiðarársandur and out to sea. Most of the ash was carried east to the sea, but destroyed much of Hornafjörður and Lónshverfi along the way. The group was called Öræfi when it started to rebuild and the glacier Öræfajökull. Litla-Hérað (Öræfasveit) was completely destroyed and few seem to have escaped. The largest ash eruption in Icelandic history. Great death, especially in Rangárvellir (:is: Rangárvellir) and many settlements were destroyed. The ash spread west through Borgarfjörður and Akranes. 1340 - ? Sulphur mountains (no lava from the 14th century known on the Reykjanes peninsula).1332 - in Vatnajökull (Vatnajökli), probably in Grímsvötn.Crop and hay failure the following year with associated casualties. Major lava flow, probably on Mýrdalssandur, but sources are unclear and contradictory. Darkness in the Eastfjords and ash fall in many parts of the country. Heavy ash fall in Skagafjörður and famine as a result. The last people at Sólheimasandur (:is: Sólheimasandur) Fire with heavy ash fall in Sólheimajökull. 1240 - off Reykjanes, location uncertain.1238 - off Reykjanes, location uncertain.1231 - off Reykjanes, location uncertain.Sandy winter due to a large ash eruption at Reykjanestá and the so-called Medieval Valley fell. They are owned by Yngra Stampahraun, (Klofningahraun), Eldvarpahraun, Illahraun and Arnarseturshraun. 1226-1227 - some eruptions in Reykjanes.1225 - off Reykjanes, location uncertain.1223 - off Reykjanes, location uncertain.Rjúpnadyngjuhraun og Mávahlíðahraun runnu 1188 - ? Rjúpnadyngju lava flow and Mávahlíða lava flow.Sources are unclear, but ash layers found in Greenland Glaciers. 1160-1180 - Two eruptions in the sea off Reykjanes (ash layer known).circa 1160 - ? in Vatnajökull (Vatnajökli).Eruption in Trölladyngju Ögmundarhraun and Kapelluhraun lava flow. 1151 - Krýsuvíkureldar (:is: Krýsuvíkureldar).Heavy ash fall to the north and northeast. Its first and greatest eruption in historical time. circa 940 - Vatnajökull / Veiðivötn (:is:Veiðivötn) (volcanic layer in NA-land).Landnáma also tells about the formation of Sólheimasandur in the great course of Jökulsá Probably the earthquake that Molda-Gnúpur and his people fled from according to "Settlement". A large lava flow from Eldgjá flowed over Álftaver (:is: Álftaver), Meðalland and Landbrot (:is: Landbrot). circa 920 - Katla (ash layer called Katla-R).circa 920 - Reykjanes, location uncertain, but t tuff layer from the eruption is known.circa 900 - Rauðhálsahraun in Hnappadalur (:is: Hnappadalur).circa 900 - Hallmundarhraun (:is: Hallmundarhraun) lava flows.circa 900 - Afstapahraun (:is: Afstapahraun).circa 870 - Ash and lava eruptions in Vatnaöldur (:de: Vatnaöldur), form the settlement layer.Repeated eruptions, probably in the same volcano in the years 540 to 542 and 547 AD. ISK - Icelandic volcano, location unknown. Two ash layers in the South and the Reykjanes peninsula. about 1200 BC - Veiðivatnasvæði, Búrfellshraun flowed from a series of craters near Veiðivötn (:is:Veiðivötn), on the one hand to Þórisós and on the other hand down with Tungná and Þjórsá all the way down to Landsveit.Formation of Helgafell and the older lava on Heimaey. The ash layer H5 is found in soil in the central highlands and in many parts of the North. ![]() The Þjórsá lava field is up to 1000 square kilometers in area and flowed over 100 km to the sea and forms the coast between Þjórsá and Ölfusá. This is the largest lava eruption known to have taken place in Iceland. A large eruption in the Veiðivötn (:is:Veiðivötn) area, then the great Þjórsá Lava flowed. about 16,000,000 years ago - the oldest known rock in Iceland was formed in a lava eruption.
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