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Grímsnes
Grímsnes () is a relatively small fissure vent, fissure or crater row Volcanic systems of Iceland, volcanic system located in South Iceland, located south–east of Þingvallavatn, Lake Thingvallavatn and east of the en echelon group of volcanic systems extending across the Reykjanes Peninsula, that erupted last in the Holocene. Geography The lava fields are spread out to the south-east of the older edifice of Búrfell (Grímsnes), Búrfell being bounded to the east by the water body of Álftavatn , on the river Sog (river), Sog (Sogið) and reaches to the south the confluence of the Sog with the Hvítá (Árnessýsla), Hvítá. From these river boundaries at about the field reaches its highest point at the Seyðishólar cone of . Most of the lava fields are covered by birch and willow. Geology Tephrochronology approximates the volcano's last eruption as about 7000 years ago. There are at least ten vents and all have erupted olivine tholeiite basalt in effusive erupt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Volcanic Eruptions In Iceland
This is an incomplete list of volcanic eruptions in Iceland. Please see External links below for databases of Icelandic eruptions which include over 530 events. ''For latest information about the current/ongoing series of eruptions near Grindavik on the Reykjanes peninsula - See 2023–2025 Sundhnúkur eruptions'' Index map of eruptions, fissures, glaciers and notable sites Alphabetic index of eruptions, fissures and notable sites Rome wasn't built in a day, (''Under construction.'') There are about 32 volcanic systems in Iceland. Volcanic system means a volcano-tectonic fissure system and – very often a bigger volcano, a so-called central volcano which in most cases is a stratovolcano and may contain a caldera. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Volcanoes In Iceland
There are too many presumed extinct or now inactive volcanic features to list all of these below, so most monogenetic volcanoes can not be mentioned individually. This list of volcanoes in Iceland only includes major active and dormant volcano, 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. This is in the context that there are several classification systems and many of the volcanoes may have separate shallow magma chambers and a deeper common magma source. Where a major vent is part of a larger volcano this is indicated in the list comment. Since some of these vent eruptions have been very large, disruptive or been regarded in popular culture as a separate volcano they have been included in the list but where this is not the case it is not appropriate to duplicate or create entries. So for minor vent eru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kerið
Kerið (; also Kerith or Kerid) is a volcanic Volcanic crater lake, crater lake located in the Grímsnes area in south Iceland, along the Golden Circle (Iceland), Golden Circle. It is one of several crater lakes in the area, known as Iceland's Western Volcanic Zone, which includes the Reykjanes, Reykjanes peninsula and the Langjökull, Langjökull Glacier, created as the land moved over a localized Hotspot (geology), hotspot, but it is the one that has the most visually recognizable caldera still intact. The site is a popular area for tourists in Iceland. Geology Kerið is the northernmost of four craters situated along an 800-meter fissure called the Tjarnarhólar Help:IPA/Icelandic, [ˈtʰja(r)tnarˌhouːlar̥] row. It was formed through explosive volcanic activity (classified as a maar) and is elliptical, measuring approximately deep, wide, and across. The wall of the crater consists of basalt, formed following the cooling of lava, and scoria. Sources differ as to when ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hvítá (Árnessýsla)
Hvítá (Icelandic language, Icelandic , "white river") is a river in Iceland that begins at Hvítárvatn glacier lake on Langjökull glacier in the highlands of Iceland at . The river flows for before dropping down into a narrow gorge at Gullfoss waterfall. Thereafter, the river flows between Biskupstungur and Hrunamannahreppur districts. Here, Hvítá Confluence, combines with three other rivers: Tungufljót , Brúará, and Stóra-Laxá , doubling the volume of the river. It proceeds to run through the flatlands near Grímsnes and behind Ingólfsfjall mountain. Just north of Selfoss (town), Selfoss town, it meets Sog River where it becomes Ölfusá as it flows into the Atlantic Ocean. Because of danger of flooding, especially during winter, Hvítá has a reputation of being the most dangerous river in Iceland. Organised rafting excursions take place on parts of the river. The river is bridged at 4 locations, thrice at the lowland and once near the source in the highland w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shield Volcano
A shield volcano is a type of volcano named for its low profile, resembling a shield lying on the ground. It is formed by the eruption of highly fluid (low viscosity) lava, which travels farther and forms thinner flows than the more viscous lava erupted from a stratovolcano. Repeated eruptions result in the steady accumulation of broad sheets of lava, building up the shield volcano's distinctive form. Shield volcanoes are found wherever fluid, low-silica lava reaches the surface of a rocky planet. However, they are most characteristic of ocean Volcanic island, island volcanism associated with Hotspot (geology), hot spots or with Rift, continental rift volcanism. They include the largest active volcanoes on Earth, such as Mauna Loa. Giant shield volcanoes are found on other planets of the Solar System, including Olympus Mons on Mars and Sapas Mons on Venus. Etymology The term 'shield volcano' is taken from the German term ''Schildvulkan'', coined by the Austrian geologist Eduar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dormant Volcanoes
A volcano is commonly defined as a vent or fissure in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and because most of Earth's plate boundaries are underwater, most volcanoes are found underwater. For example, a mid-ocean ridge, such as the Mid-Atlantic Ridge, has volcanoes caused by divergent tectonic plates whereas the Pacific Ring of Fire has volcanoes caused by convergent tectonic plates. Volcanoes resulting from divergent tectonic activity are usually non-explosive whereas those resulting from convergent tectonic activity cause violent eruptions."Mid-ocean ridge tectonics, volcanism and geomorphology." Geology 26, no. 455 (2001): 458. https://macdonald.faculty.geol.ucsb.edu/papers/Macdonald%20Mid-Ocean%20Ridge%20Tectonics.pdf Volcanoes can also form where there is stretching an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fissure Vents
A fissure vent, also known as a volcanic fissure, eruption fissure or simply a fissure, is a linear volcanic vent through which lava erupts, usually without any explosive activity. The vent is often a few metres wide and may be many kilometres long. Fissure vents can cause large flood basalts which run first in lava channels and later in lava tubes. After some time, the eruption tends to become focused at one or more spatter cones. Volcanic cones and their craters that are aligned along a fissure form a crater row. Small fissure vents may not be easily discernible from the air, but the crater rows (see Laki) or the canyons (see Eldgjá) built up by some of them are. The dikes that feed fissures reach the surface from depths of a few kilometers and connect them to deeper magma reservoirs, often under volcanic centers. Fissures are usually found in or along rifts and rift zones, such as Iceland and the East African Rift. Fissure vents are often part of the structure of shie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanoes Of Iceland
:''The volcano system in Iceland that started activity on August 17, 2014, and ended on February 27, 2015, is Bárðarbunga.'' :''The volcano in Iceland that erupted in May 2011 is Grímsvötn.'' 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. Some of the various eruptions of lava, gas and ash have been both destructive of property and deadly to life over the years, as well as disruptive to local and European air travel. Volcanic systems and volcanic zones of Iceland Holocene volcanism in Iceland is mostly to be found in the ''Neovolcanic Zone'', comprising the Reykjanes volcanic belt (RVB), the West volcanic zone (WVZ), the Mid-Iceland belt (MIB), the East volcanic zone (EVZ) and the North volcanic zone (NVZ). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catalogue Of Icelandic Volcanoes
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 website's design was subsequently used in creating the website European Catalogue of Volcanoes that covers a larger area, and which has much, but not all the functionality of the Catalogue of Icelandic Volcanoes. Current Status The website displays information on 32 Icelandic volcanic systems in English or Icelandic. It also provides information on the Beerenberg volcano. History Volcano observatory functionality in Iceland was prior to the air travel disruption after the 2010 Eyjafjallajökull eruption partially joint funded by the International Civil Aviation Organization (ICAO) The initial June 2010 meeting of the International Volca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanism Of Iceland
:''The volcano system in Iceland that started activity on August 17, 2014, and ended on February 27, 2015, is Bárðarbunga.'' :''The volcano in Iceland that erupted in May 2011 is Grímsvötn.'' 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. Some of the various eruptions of lava, gas and ash have been both destructive of property and deadly to life over the years, as well as disruptive to local and European air travel. Volcanic systems and volcanic zones of Iceland Holocene volcanism in Iceland is mostly to be found in the ''Neovolcanic Zone'', comprising the Reykjanes volcanic belt (RVB), the West volcanic zone (WVZ), the Mid-Iceland belt (MIB), the East volcanic zone (EVZ) and the North volcanic zone (NVZ). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Lakes Of Iceland
Iceland has over 20 lakes larger than 10 km2 (4 sq mi), and at least 40 others varying between 2.5 and 10 km2 (1 to 4 sq mi) in size. This list also includes a few smaller lakes and ponds that are considered notable (for example Tjörnin in Reykjavik). The figures for many of the smaller lakes are unreliable. Also, some larger lakes vary considerably in size between years or seasons or, for the reservoirs, according to the needs of power plants. Some power plant reservoirs may not be present despite being larger than listed lakes. Larger lakes (>10 km2) Smaller lakes (90 m (sensitive to climatic and geological change and was getting smaller - started recovering again in 2004) * Breiðárlón Breiðárlón () is a glacier lake at the south end of the Icelandic glacier Vatnajökull. Formed at the terminus of one of Vatnajökull's biggest outlets, Breiðamerkurjökull, Breiðárlón lies in between Fjallsárlón and Jökulsárlón gla ..., 8 km2 * Reyðarvatn, 8.3 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geography Of Iceland
Iceland is an island country at the confluence of the Atlantic Ocean, North Atlantic and Arctic Ocean, Arctic oceans, east of Greenland and immediately south of the Arctic Circle, atop the constructive boundary of the northern Mid-Atlantic Ridge. The island country is the world's List of islands by area#Islands, 18th largest in area and one of the most List of sovereign states and dependent territories by population density, sparsely populated. It is the westernmost European country when not including Greenland and has more land covered by glaciers than continental Europe. Its total size is and possesses an exclusive economic zone of . Statistics Iceland is an island country in Northern Europe, straddling the Eurasian and North American plates between the Greenland Sea and the North Atlantic Ocean, northwest of the British Isles. Extent (locations outside mainland in parentheses) :North: Rifstangi, 66°32′3" N (Kolbeinsey, 67°08,9 N) :South: Kötlutangi, 63°23′6" N ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
