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Búrfell (Hafnarfjörður)
Búrfell () and the connected lava channel ''Búrfellsgjá'' are famous landmarks of the Reykjanes peninsula, Southwest Iceland. They are part of the Krýsuvík (volcanic system), Krýsuvík volcanic system. Name The name Búrfell is widespread in Iceland. It means "pantry mountain." Pyroclastic cone Búrfell The spatter cone BúrfellThor Thordarson, Armann Hoskuldsson: Iceland. Classic geology in Europe 3. Harpenden 2002, p.60 is located at about 7 km from Hafnarfjörður in Heiðmörk, part of the Krýsuvík (volcanic system), Krýsuvík volcanic system. Margrét Traustadóttir : Hallarmælingar í Búrfellsgjá, sumarið 2012. BS ritgerd. Jarðvísindadeild Háskóla Íslands. Leiðbeinandi Sigrún Hreinsdóttir. (2013) Retrieved 4 August 2020. and its northernmost outpost as a volcano. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Straumsvík
Straumsvík (, "stream cove") is a harbour on the northern shore of the Reykjanes Peninsula in Iceland Iceland ( is, Ísland; ) is a Nordic island country in the North Atlantic Ocean and in the Arctic Ocean. Iceland is the most sparsely populated country in Europe. Iceland's capital and largest city is Reykjavík, which (along with its s .... References Southern Peninsula (Iceland) Ports and harbours in Europe {{iceland-fjord-stub ... [...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 over a hot spot. Nearly thirty volcanoes are known to have erupted in the Holocene epoch; these include Eldgjá, source of the largest lava eruption in human history. 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). Two lateral volcanic zones play a minor role: Öræfi Volcanic Belt (ÖVB) and Snæfellsnes Volcanic Belt (SVB). Outside of the main island are the Reykjanes Ridge (RR), as part of the Mid-At ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lava Tube
A lava tube, or pyroduct, is a natural conduit formed by flowing lava from a volcanic vent that moves beneath the hardened surface of a lava flow. If lava in the tube empties, it will leave a cave. Formation A lava tube is a type of lava cave formed when a low-viscosity lava flow develops a continuous and hard crust, which thickens and forms a roof above the still-flowing lava stream. Tubes form in one of two ways: either by the crusting over of lava channels, or from pāhoehoe flows where the lava is moving under the surface. Lava usually leaves the point of eruption in channels. These channels tend to stay very hot as their surroundings cool. This means they slowly develop walls around them as the surrounding lava cools and/or as the channel melts its way deeper. These channels can get deep enough to crust over, forming an insulating tube that keeps the lava molten and serves as a conduit for the flowing lava. These types of lava tubes tend to be closer to the lava erupt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subsidence
Subsidence is a general term for downward vertical movement of the Earth's surface, which can be caused by both natural processes and human activities. Subsidence involves little or no horizontal movement, which distinguishes it from slope movement. Processes that lead to subsidence include dissolution of underlying carbonate rock by groundwater; gradual compaction of sediments; withdrawal of fluid lava from beneath a solidified crust of rock; mining; pumping of subsurface fluids, such as groundwater or petroleum; or warping of the Earth's crust by tectonic forces. Subsidence resulting from tectonic deformation of the crust is known as tectonic subsidence and can create accommodation for sediments to accumulate and eventually lithify into sedimentary rock. Ground subsidence is of global concern to geologists, geotechnical engineers, surveyors, engineers, urban planners, landowners, and the public in general.National Research Council, 1991. ''Mitigating losses from land subsi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lava Lake Overflow
Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface. Lava may be erupted at a volcano or through a fracture in the crust, on land or underwater, usually at temperatures from . The volcanic rock resulting from subsequent cooling is also often called ''lava''. A lava flow is an outpouring of lava during an effusive eruption. (An explosive eruption, by contrast, produces a mixture of volcanic ash and other fragments called tephra, not lava flows.) The viscosity of most lava is about that of ketchup, roughly 10,000 to 100,000 times that of water. Even so, lava can flow great distances before cooling causes it to solidify, because lava exposed to air quickly develops a solid crust that insulates the remaining liquid lava, helping to keep it hot and inviscid enough to continue flowing. The word ''lava'' comes from Italian and is probably derived from the Latin word ''labes' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lava Channel
A lava channel is a stream of fluid lava contained within zones of static (i.e., solid and stationary) lava or lava levees. The initial channel may not contain levees per se, until the parental flow solidifies over what develops into the channel and creates natural levees. This initial levee allows for the building of a more complex levee and channel. As the lava flows through the channel, the elevation of the surface of the lava flow pulsates and lava can possibly flood the associated channel walls spilling out of the channel and over the existing levees, creating what is known as overflow levees. Overflow levees increase the height and width of the original levee. The lava that flows in lava channels is commonly basaltic in composition. See also *Lava tube A lava tube, or pyroduct, is a natural conduit formed by flowing lava from a volcanic vent that moves beneath the hardened surface of a lava flow. If lava in the tube empties, it will leave a cave. Formation A lava tube ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skerjafjörður
Skerjafjörður (, "skerry fjord") is a fjord located immediately west of Iceland's capital Reykjavík. It is part of a larger bay, Faxaflói Faxaflói (sometimes Faxa Bay, Faxe Bay or Faxi Bay,Thorstein Thorsteinsson. 1930. ''Iceland, 1930: A Handbook Published on the Fortieth Anniversary of Landsbanki Íslands (National Bank of Iceland)''. Reykjavík: Ríkisprentsmidjan Gutenberg. i ..., on Iceland's west coast. {{DEFAULTSORT:Skerjafjordur Fjords of Iceland ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Álftanes
Álftanes () is the name of a town and a collection of small peninsulas in Iceland. It means ''swan peninsula''. The best known of these peninsulas extrudes from the eastern part of Reykjanes with the town of the same name in the Capital Region of Iceland. The municipality of Álftanes was merged into the neighboring municipality of Garðabær in January 2013. Álftanes had a population of 2,484 as of January 2011. The town contains the official residence of the President of Iceland, Bessastaðir. Sports The town is home to the Ungmennafélag Álftaness Ungmennafélag Álftaness, also known as Álftanes, is a multi-sports club in Álftanes, Iceland. It has active departments in basketball, football, golf, track and field and volleyball. History The club was founded in 1946 as Ungmennafélag Bessa ... multi-sport club. References Southwest Iceland Municipalities of Iceland Populated places in Capital Region (Iceland) Peninsulas of Iceland {{Iceland-geo-stu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monogenetic Volcano
A monogenetic volcanic field is a type of volcanic field consisting of a group of small monogenetic volcanoes, each of which erupts only once, as opposed to polygenetic volcanoes, which erupt repeatedly over a period of time. The small monogenetic volcanoes of these fields are the most common subaerial volcanic landform. Many monogenetic volcanoes are cinder cones, often with lava flows, such as Parícutin in the Michoacán-Guanajuato volcanic field, which erupted from 1943 to 1952. Some monogenetic volcanoes are small lava shields, such as Rangitoto Island in the Auckland volcanic field. Other monogenetic volcanoes are tuff rings or maars. A monogenetic field typically contains between ten and a hundred volcanoes. The Michoacán-Guanajuato field in Mexico contains more than a thousand volcanoes and is exceptionally large. Monogenetic fields occur only where the magma supply to the volcano is low or where vents are not close enough or large enough to develop plumbing systems f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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