Fagradalsfjall in the valley Geldingadalur on March 19, 2021. The last known occurrence of such magma erupted on the Reykjanes peninsula is thought to have been more than 14,000 years ago, when Iceland was still completely covered by ice. The Reykjanes volcanic system at the SW tip of the Reykjanes Peninsula, where the Mid-Atlantic Ridge rises above sea level, comprises a broad area of postglacial basaltic crater rows and small shield volcanoes. Today (29-December-2020) and earthquake with magnitude of Mw3,1 took place on Reykjanes ridge. The Mid-Atlantic Ridge (MAR) is a mid-ocean ridge, a divergent or constructive plate boundary located along the floor of the Atlantic Ocean, and part of the longest mountain range in the world.In the North Atlantic, it separates the North American from the Eurasian Plate and the African Plate, north and south of the Azores Triple Junction respectively. Reykjanes ridge. Facts about the volcano eruption in Geldingadalur An volcano eruption broke out at Mt. The Mid-Atlantic Ridge extends from … The geological deformation explains the location of earthquakes, volcanoes, fissures, and the shape of the island. This is thought to be the result of the influence of the hot spot. Reykjanes Ridge The part of the Mid-Atlantic Ridge to the south-west of Iceland, whose axis, marked by a median valley, continues into the active Otherwise there has not been any more earthquake activity today out on the Reykjanes ridge. Iceland is the largest landmass (102,775 km²) situated on an oceanic ridge. It is a land-born, highly volcanic counterpart of the Mid-Atlantic Spreading Ridge where two tectonic plates part at an average rate of 2.0-2.5 cm/yr. The Reykjanes Peninsula is a young section of Iceland. Although Iceland is a part of the north Atlantic mid-ocean ridge, it forms a large plateau and eruptions of this type of melt directly is rare on Iceland. This ridge is a 40.000 km crack in the ocean floor caused by the separation of the North American and Eurasian tectonic plates. Only one other smaller earthquake seems to have happened in that same area after the largest earthquake. The ridge leading south from Iceland is named the Reykjanes Ridge, and, although it spreads at 20 mm (0.8 inch) per year or less, it lacks a rift valley. This earthquake was far out in the ocean. The geological deformation of Iceland is the way that the rocks of the island of Iceland are changing due to tectonic forces. On the Reykjanes Ridge it is the obliquely-spreading ridge that is replacing the orthogonal one. The Reykjanes Ridge is known to have submarine volcanism off the coast of Iceland, with young lava flows discovered in 1992 after seismic swarms. Atlantic Ocean. Seems to reykjanes ridge facts happened in that same area after the largest earthquake Mw3,1 took place on Reykjanes ridge this is! 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