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Oddnýjarhnjúkur-Langjökull Volcanic System
The Oddnýjarhnjúkur-Langjökull (Langjökull) volcanic system of Iceland last erupted about 3600 years ago and is associated with current geothermal activity. The area of its central volcano is at present under the second largest ice cap in Iceland. Geography The volcanic system is located north of Þingvallavatn, Lake Thingvallavatn and its southern lava flows contribute to the floor of the Þingvellir rift valley central to Icelandic cultural history and the fissure vent, fissure system which is up to wide extends up to north. The Laugarfjall lava dome on the western side of the Haukadalur (Bláskógabyggð), Haukadalur valley that houses the Geysir geothermal area with its geysers and other geothermal features is part of the southern fissure swarm. The shield volcano of Skjaldbreiður is prominent to the north of the rift valley with a height of and to the north the Langjökull ice cap at in area and second in area in Iceland, covers its central volcano of Oddnýjarhn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Route 35 (Iceland)
Route 35 is one of the interior roads of Iceland. The road is divided into two main sections. The first part is called (, ) and runs from about one kilometer northwest of Selfoss up to Gullfoss. It is a road for all cars. The second part is (, {{lit, Kjölur Road). This is a highland road which runs over the Kjölur plateau. The mountain road has the number F35. Route 35 in total is 237 km long. Biskupstungnabraut From the Ring Road (1) the road heads north-east through Árnessýsla forming the primary route to the tourist hotspots of Geysir and Gullfoss. Along the way the road meets several other routes, such as Þingvallavegur (36), Laugarvatnsvegur (37) with distinctive peninsulas and Skálholt Way (31) and Hrunamannavegur (30). Near the road are a number of tourist attractions. In addition to Geysir and Gullfoss, these include volcanic crater lake Kerið and the Faxi waterfall on the Tungufljót river. The road crosses the Alviðra. The original bridge was b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hot Spring
A hot spring, hydrothermal spring, or geothermal spring is a Spring (hydrology), spring produced by the emergence of Geothermal activity, geothermally heated groundwater onto the surface of the Earth. The groundwater is heated either by shallow bodies of magma (molten rock) or by circulation through fault (geology), faults to hot rock deep in the Earth's crust. Hot spring water often contains large amounts of dissolved minerals. The chemistry of hot springs ranges from acid sulfate springs with a pH as low as 0.8, to alkaline chloride springs saturated with silica, to bicarbonate springs saturated with carbon dioxide and carbonate minerals. Some springs also contain abundant dissolved iron. The minerals brought to the surface in hot springs often feed communities of extremophiles, microorganisms adapted to extreme conditions, and it is possible that life on Earth had its origin in hot springs. Humans have made use of hot springs for bathing, relaxation, or medical therapy for th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Before Present
Before Present (BP) or "years before present (YBP)" is a time scale used mainly in archaeology, geology, and other scientific disciplines to specify when events occurred relative to the origin of practical radiocarbon dating in the 1950s. Because the "present" time changes, standard practice is to use 1January 1950 as the commencement date (epoch) of the age scale, with 1950 being labelled as the "standard year". The abbreviation "BP" has been interpreted retrospectively as "Before Physics", which refers to the time before nuclear weapons testing artificially altered the proportion of the carbon isotopes in the atmosphere, which scientists must account for when using radiocarbon dating for dates of origin that may fall after this year. In a convention that is not always observed, many sources restrict the use of BP dates to those produced with radiocarbon dating; the alternative notation "RCYBP" stands for the explicit "radio carbon years before present". Usage The BP scale is s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
