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Iceland's location astride the Mid-Atlantic Ridge, where the Eurasian and North American Plates are moving apart, is partly responsible for this intense volcanic activity, but an additional cause is necessary to explain why Iceland is a substantial island while the rest of the ridge mostly consists of seamounts, with peaks below sea level.
Iceland experiences frequent volcanic activity, due to its location both on the Mid-Atlantic Ridge, a divergent tectonic plate boundary, and being over a hotspot.Nearly thirty volcanoes are known to have erupted in the Holocene epoch; these include Eldgjá, source of the largest lava eruption in human history.
This list of volcanoes in Iceland only includes major active and dormant volcanic mountains, of which at least 18 vents have erupted since human settlement of Iceland began around 900 AD. Subsequent to the main list a list is presented that classifies the volcanoes into zones, systems and types.
The Hofsjökull volcanic system (also Hofsjökull-Kerlingarfjöll volcanic system) contains the largest active central volcano in Iceland. [3] It is called Hofsjökull ( Icelandic : " temple glacier", Icelandic pronunciation: [ˈhɔfsˌjœːkʏtl̥] ⓘ ), after the icecap of the same name.
The Catalogue of Icelandic Volcanoes (CIV) is a web resource that was created to serve as an official source of information about potentially active volcanoes monitored by Iceland. The creation of the website followed the disruptive 2010 eruptions of Eyjafjallajökull and allows access to a database of recent eruptions and their details.
The geological deformation of Iceland is the way that the rocks of the island of Iceland are changing due to tectonic forces. The geological deformation help to explain the location of earthquakes, volcanoes, fissures, and the shape of the island. Iceland is the largest landmass (102,775 km 2 (39,682 sq mi)) situated on an oceanic ridge.
One of the rare examples of sedimentary rocks in Iceland is the sequence of marine and non-marine sediments present on the Tjörnes Peninsula in northern Iceland. These Pliocene and late Pleistocene deposits are composed of silt and sandstones, with fossils preserved in the lower layers. [11]
The stratovolcano, which is the only large central volcano in its part of Iceland, has many pyroclastic cones on its flanks. Upper-flank craters produced intermediate to felsic materials. Several holocene eruptions have originated from the summit crater and have produced felsic material, [ 2 ] with pumice from the two most recent major ...