Editing Geography of Iceland (section)

===Geological activity===
{{See also|Geothermal power in Iceland}}
[[File:Erupting geysir.jpg|thumb|[[Geysir]] erupting in September 2000]]
A geologically young land, Iceland is located on both the [[Iceland hotspot]] and the Mid-Atlantic Ridge, which runs right through it. This location means that the island is highly geologically active with earthquakes and volcanoes, notably Hekla, Eldgjá, Herðubreið and Eldfell. Eyjafjallajökull (1,666 m) [[2010 eruptions of Eyjafjallajökull|erupted]] in 2010, disrupting European air traffic.<ref>{{Cite web |title=The World Factbook – Central Intelligence Agency |url=https://www.cia.gov/the-world-factbook/countries/iceland/ |access-date=17 September 2018 |website=www.cia.gov |language=en}}</ref> To demonstrate the geothermal activity, the [[Icelandic Meteorological Office]] said that during a single week in February 2021, around 17,000 earthquakes have hit the southwestern region of [[Reykjanes]].<ref>{{Cite web |last=Siad |first=Arnaud |title=17,000 earthquakes hit Iceland in the past week. An eruption could be imminent |url=https://www.cnn.com/2021/03/03/world/iceland-volcano-eruption-keilir-intl-latam/index.html |access-date=4 March 2021 |website=CNN|date=3 March 2021 }}</ref>

Iceland has many [[geyser]]s, including [[Geysir]], from which the English word ''geyser'' is derived. With the widespread availability of [[geothermal power]], and the harnessing of many rivers and waterfalls for [[hydroelectricity]], most residents have access to inexpensive hot water, heating, and electricity. The island is composed primarily of [[basalt]], a low-[[silica]] [[lava]] associated with [[effusive eruption|effusive volcanism]] as has occurred also in Hawaii. Iceland, however, has a variety of volcanic types (composite and fissure), many producing more evolved lavas such as [[rhyolite]] and [[andesite]]. Iceland has hundreds of volcanoes, with approximately 30 active volcanic systems.<ref>{{Cite journal |last=Carmichael |first=I.S.E. |year=1964 |title=The Petrology of Thingmuli, a Tertiary Volcano in Eastern Iceland |url=http://wiki.web.ru/images/7/78/Carmichael64.pdf |journal=Journal of Petrology |volume=5 |issue=3 |pages=435–460 |doi=10.1093/petrology/5.3.435}}</ref>