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Askja
Askja () is an active volcano situated in a remote part of the central highlands of Iceland. The name Askja refers to a complex of nested calderas within the surrounding Dyngjufjöll mountains, which rise to , ''askja'' meaning ''box'' or ''caldera'' in Icelandic. Geography The Askja central volcano is in diameter and is associated with the Askja volcanic system which has a long fissure swarm that extends north from beneath the Vatnajökull glacier towards the north coast of Iceland. The Hrúthálsar area which is to the north-east is now usually regarded as part of the system. The outer caldera of Askja, representing a prehistoric eruption, is about in area, and there is evidence of other later caldera-forming events within it. These include the main summit caldera, that is about in diameter, to its north-east the diameter Kollur caldera, and the 1875 Öskjuvatn caldera with a diameter of about . The main crater floor lies at about . The central volcano region i ... [...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] |
Dyngjufjöll
Dyngjufjöll. The Dyngjufjöll is a volcanic mountain range in the northeast of Iceland which belongs to the Askja volcanic system. Sometimes called Dyngjufjöll, it is part of the Vatnajökull National Park. The Askja caldera is also located there. Location The huge mountain massif is located in the highlands of Iceland, more precisely in the Ódáðahraun and covers around 600 km2. It forms an almost perfect square with a side length of around 24 km. Vatnajökull with its Dyngjujökull glacier tongue is 15 km south of the mountains. On the west side, the Dyngjudalur valley cuts into the mountains, so that this is called the Vestari-Dyngjufjöll . These also include the central volcano of the Askja volcanic system. The region is only accessible for a few months of the year. Being situated in the rain shadow to the northeast of the Vatnajökull glacier, the area receives only about of rainfall annually. NASA The area was used by NASA during training for the A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Volcano
A central volcano is a type of volcano formed by basalts and silica-rich volcanic rocks. They contain very few or no volcanic rocks of intermediate composition, such that they are chemically bimodal volcanism, bimodal. Large silicic eruptions at central volcanoes often result in the formation of one or more calderas. Central volcanoes can be stratovolcanoes or shield volcanoes. Central volcanoes undergo periodic eruptions throughout their lifetime, which can span more than a million years. In Iceland, volcanic systems are normally named after an associated central volcano. The largest known glaciovolcanism, glaciovolcanic central volcano on Earth is Mount Haddington, a glacier-covered shield volcano on James Ross Island in Antarctica. Examples Antarctica *Mount Discovery *Mount Morning Canada *Armadillo Peak *Ice Peak *Ilgachuz Range *Itcha Range *Level Mountain *Mount Edziza *Rainbow Range (Chilcotin Plateau), Rainbow Range *Spectrum Range Iceland *Askja *Eyjafjallajökull *K ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iceland
Iceland is a Nordic countries, Nordic island country between the Atlantic Ocean, North Atlantic and Arctic Oceans, on the Mid-Atlantic Ridge between North America and Europe. It is culturally and politically linked with Europe and is the region's westernmost and most list of countries and dependencies by population density, sparsely populated country. Its Capital city, capital and largest city is Reykjavík, which is home to about 36% of the country's roughly 380,000 residents (excluding nearby towns/suburbs, which are separate municipalities). The official language of the country is Icelandic language, Icelandic. Iceland is on a rift between Plate tectonics, tectonic plates, and its geologic activity includes geysers and frequent Types of volcanic eruptions, volcanic eruptions. The interior consists of a volcanic plateau with sand and lava fields, mountains and glaciers, and many Glacial stream, glacial rivers flow to the sea through the Upland and lowland, lowlands. Iceland i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Viti Geothermal Lake At Askja
Viti or Víti may refer to: Places * Viti, Estonia, a village in Estonia * Viti, Kosovo, a town and municipality in Kosovo * Víti (meaning "hell" in Icelandic), the name of several locations in Iceland: ** Víti (Askja), a warm crater lake near Askja caldera in central Iceland ** Víti (Krafla), a crater lake in Krafla caldera in northern Iceland * Viti is the Fijian-language name of Fiji, an island nation in the South Pacific Ocean: :*Bei Kai Viti, a political party in Fiji in the years 1999-2005 :*Premier of the Kingdom of Viti, head of the first unified Fijian state 1871-1874 :*Tui Viti, a title which denotes Fijian royalty and translates as King of Fiji :*Viti Levu, the largest island in Fiji :*Viti Levu giant pigeon, ''Natunaornis gigoura'', a prehistoric flightless pigeon from Fiji :*Viti Levu Group, a group of islands in Fiji :*Viti Levu rail, ''Vitirallus watlingi'', a prehistoric bird from Fiji :*Viti Levu scrubfowl, ''Megapodius amissus'', a prehistoric bird from Fiji ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caldera
A caldera ( ) is a large cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcanic eruption. An eruption that ejects large volumes of magma over a short period of time can cause significant detriment to the structural integrity of such a chamber, greatly diminishing its capacity to support its own roof and any substrate or rock resting above. The ground surface then collapses into the emptied or partially emptied magma chamber, leaving a large depression at the surface (from one to dozens of kilometers in diameter). Although sometimes described as a Volcanic crater, crater, the feature is actually a type of sinkhole, as it is formed through subsidence and collapse rather than an explosion or impact. Compared to the thousands of volcanic eruptions that occur over the course of a century, the formation of a caldera is a rare event, occurring only a few times within a given window of 100 years. Only eight caldera-forming collapses are known to have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Active Volcano
An active volcano is a volcano that is currently erupting, or has the potential to erupt in the future. Conventionally it is applied to any that have erupted during the Holocene (the current geologic epoch that began approximately 11,700 years ago). A volcano that is not currently erupting but could erupt in the future is known as a dormant volcano. Volcanoes that will not erupt again are known as extinct volcanoes. Overview There are 1,350 potentially active volcanoes around the world, 500 of which have erupted in historical time. Many active volcanoes are located along the Pacific Rim, also known as the Pacific Ring of Fire. An estimated 500 million people live near active volcanoes. ''Historical time'' (or recorded history) is another timeframe for ''active''. The span of recorded history differs from region to region. In China and the Mediterranean, it reaches back nearly 3,000 years, but in the Pacific Northwest of the United States and Canada, it reaches back less tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Highlands Of Iceland
The Highland (Icelandic language, Icelandic: ''Hálendið)'' or The Central Highland is an area that comprises much of the interior land of Iceland. The Highland is situated above and is mostly uninhabitable. The soil is primarily volcanic ash, and the terrain consists of basalt mountains and lava fields. Snow covers the Highland from October until the beginning of June. A few oasis-like areas, such as Herðubreiðarlindir and Thórsmörk, Þórsmörk, are also found in the Highland. The area has many notable natural features and hiking trails. Natural features in the Highland The Highland encompasses various geological features, including Landmannalaugar, Torfajökull, Eldgjá, Thórsmörk, Þórsmörk, Herðubreið, Askja, Hveradalir, Laki, Lakagígar, and the Fagrifoss waterfall. Sites in the Highland are difficult to access and may be accessible only during the summer months. Most sites require all-wheel drive or all-terrain vehicles for access due to the unpaved dirt ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastfjords
Eastern Region (, ) is a Regions of Iceland, region in eastern Iceland. Its area is and in 2024 its population was 11,085. The Eastern Region has a jagged coastline of fjords, referred to as the ''Eastfjords'' ( ). The largest town in the region is Egilsstaðir, with a population of 2,632. The oldest municipality is Djúpivogur, which got their trading licence in 1589 and had a population of 412 in 2024. The only car and passenger ferry that sails between Iceland and the European continent calls at Seyðisfjörður once a week except in the winter season. The region is home to the Kárahnjúkar Hydropower Plant. Among notable tourist destinations are the Helgustaðir mine, which is known for its Iceland spar, and Stuðlagil. References See also * :Populated places in Eastern Region (Iceland) External links * Eastern Region (Iceland), {{Iceland-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Romania
Romania is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern and Southeast Europe. It borders Ukraine to the north and east, Hungary to the west, Serbia to the southwest, Bulgaria to the south, Moldova to the east, and the Black Sea to the southeast. It has a mainly continental climate, and an area of with a population of 19 million people. Romania is the List of European countries by area, twelfth-largest country in Europe and the List of European Union member states by population, sixth-most populous member state of the European Union. Europe's second-longest river, the Danube, empties into the Danube Delta in the southeast of the country. The Carpathian Mountains cross Romania from the north to the southwest and include Moldoveanu Peak, at an altitude of . Bucharest is the country's Bucharest metropolitan area, largest urban area and Economy of Romania, financial centre. Other major urban centers, urban areas include Cluj-Napoca, Timiș ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Ireland
Northern Ireland ( ; ) is a Countries of the United Kingdom, part of the United Kingdom in the north-east of the island of Ireland. It has been #Descriptions, variously described as a country, province or region. Northern Ireland shares Republic of Ireland–United Kingdom border, an open border to the south and west with the Republic of Ireland. At the 2021 United Kingdom census, 2021 census, its population was 1,903,175, making up around 3% of the Demographics of the United Kingdom#Population, UK's population and 27% of the population on the island of Ireland#Demographics, Ireland. The Northern Ireland Assembly, established by the Northern Ireland Act 1998, holds responsibility for a range of Devolution, devolved policy matters, while other areas are reserved for the Government of the United Kingdom, UK Government. The government of Northern Ireland cooperates with the government of Ireland in several areas under the terms of the Good Friday Agreement. The Republic of Ireland ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tephra
Tephra is fragmental material produced by a Volcano, volcanic eruption regardless of composition, fragment size, or emplacement mechanism. Volcanologists also refer to airborne fragments as pyroclasts. Once clasts have fallen to the ground, they remain as tephra unless hot enough to fuse into pyroclastic rock or tuff. When a volcano explodes, it releases a variety of tephra including ash, cinders, and blocks. These layers settle on the land and, over time, sedimentation occurs incorporating these tephra layers into the geologic record. Tephrochronology is a geochronological technique that uses discrete layers of tephra—volcanic ash from a single eruption—to create a chronological framework in which Paleoecology, paleoenvironmental or Archaeology, archaeological records can be placed. Often, when a volcano explodes, biological organisms are killed and their remains are buried within the tephra layer. These fossils are later dated by scientists to determine the age of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
