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Palmason Model
The Palmason model is a depth, distance, temperature and heat flow gradient model of crustal accretion mechanism through the Iceland lithosphere which denotes the spreading material trajectories from a rift axis. The material erupting at the rift axis will tend to sink down, due to thermal subsidence and spreading, to a depth of many kilometers, while lava flows spreading to a distance of many kilometers away from the rift axis on the surface will sink down to shallower depth. Surface erosion can expose such preserved materials. The model was developed in the 1970s and 80s by Guðmundur Pálmason (1928–2004), once one of Iceland's best chess players. Chessgames.com. The name given to the model, however, misrepresents |
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 surrounding areas) is home to over 65% of the population. Iceland is the biggest part of the Mid-Atlantic Ridge that rises above sea level, and its central volcanic plateau is erupting almost constantly. The interior consists of a plateau characterised by sand and lava fields, mountains, and glaciers, and many glacial rivers flow to the sea through the lowlands. Iceland is warmed by the Gulf Stream and has a temperate climate, despite a high latitude just outside the Arctic Circle. Its high latitude and marine influence keep summers chilly, and most of its islands have a polar climate. According to the ancient manuscript , the settlement of Iceland began in 874 AD when the Norwegian chieftain Ingólfr Arnarson became the first p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lithosphere
A lithosphere () is the rigid, outermost rocky shell of a terrestrial planet or natural satellite. On Earth, it is composed of the crust (geology), crust and the portion of the upper mantle (geology), mantle that behaves elastically on time scales of up to thousands of years or more. The crust and upper mantle (Earth), upper mantle are distinguished on the basis of chemistry and mineralogy. Earth's lithosphere Earth's lithosphere, which constitutes the hard and rigid outer vertical layer of the Earth, includes the crust and the uppermost mantle. The lithosphere is underlain by the asthenosphere which is the weaker, hotter, and deeper part of the upper mantle. The lithosphere–asthenosphere boundary is defined by a difference in response to stress. The lithosphere remains rigid for very long periods of geologic time in which it deforms elastically and through brittle failure, while the asthenosphere deforms viscously and accommodates strain through plasticity (physics), pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guðmundur Pálmason
Guðmundur Pálmason (11 June 1928 – 11 March 2004) was an Icelandic chess player and geologist, Palmason Model author. Biography In 1949, Guðmundur Pálmason graduated from Menntaskólinn í Reykjavík. In 1955, he graduated as a physics engineer from the Royal Institute of Technology in Stockholm. Pálmason became its director in 1964 and held that position until the end of 1996. In parallel with his work, he served United Nations consultative work in the Philippines, Mali, El Salvador, Taiwan and North Korea. From 1973 to 1974, Guðmundur Pálmason was a visiting professor at Columbia University in New York. In 1971, he defended his doctoral dissertation at the University of Iceland about the construction of Iceland's crust based on wave refraction measurements. There Guðmundur Pálmason explained the first human outline in the construction of Iceland's crust. A few years later, he developed a computational Palmason Model that explained the main features of the geology of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chess
Chess is a board game for two players, called White and Black, each controlling an army of chess pieces in their color, with the objective to checkmate the opponent's king. It is sometimes called international chess or Western chess to distinguish it from related games, such as xiangqi (Chinese chess) and shogi (Japanese chess). The recorded history of chess goes back at least to the emergence of a similar game, chaturanga, in seventh-century India. The rules of chess as we know them today emerged in Europe at the end of the 15th century, with standardization and universal acceptance by the end of the 19th century. Today, chess is one of the world's most popular games, played by millions of people worldwide. Chess is an abstract strategy game that involves no hidden information and no use of dice or cards. It is played on a chessboard with 64 squares arranged in an eight-by-eight grid. At the start, each player controls sixteen pieces: one king, one queen, two rooks, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Icelandic Names
Icelandic names are names used by people from Iceland. Icelandic surnames are different from most other naming systems in the modern Western world by being patronymic or occasionally matronymic: they indicate the father (or mother) of the child and not the historic family lineage. Iceland shares a common cultural heritage with the Scandinavian countries of Denmark, the Faroe Islands, Norway, and Sweden. Unlike other Nordics, Icelanders have continued to use their traditional name system, which was formerly used by all Nordic countries except Finland, whose indigenous people are Uralic speakers and thus distinct from the Germanic rest of Scandinavia. The Icelandic system is thus not based on family names (although some people do have family names and might use both systems). Generally, with few exceptions, a person's last name indicates the first name of their father (patronymic) or in some cases mother (matronymic) in the genitive, followed by ("son") or ("daughter"). Some fam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patronymic
A patronymic, or patronym, is a component of a personal name based on the given name of one's father, grandfather (avonymic), or an earlier male ancestor. Patronymics are still in use, including mandatory use, in many countries worldwide, although their use has largely been replaced by or transformed into patronymic surnames. Examples of such transformations include common English surnames such as Johnson (son of John). Origins of terms The usual noun and adjective in English is ''patronymic'', but as a noun this exists in free variation alongside ''patronym''. The first part of the word ''patronym'' comes from Greek πατήρ ''patēr'' "father" (GEN πατρός ''patros'' whence the combining form πατρο- ''patro''-); the second part comes from Greek ὄνυμα ''onyma'', a variant form of ὄνομα ''onoma'' "name". In the form ''patronymic'', this stands with the addition of the suffix -ικός (''-ikos''), which was originally used to form adjectives with the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surname
In some cultures, a surname, family name, or last name is the portion of one's personal name that indicates one's family, tribe or community. Practices vary by culture. The family name may be placed at either the start of a person's full name, as the forename, or at the end; the number of surnames given to an individual also varies. As the surname indicates genetic inheritance, all members of a family unit may have identical surnames or there may be variations; for example, a woman might marry and have a child, but later remarry and have another child by a different father, and as such both children could have different surnames. It is common to see two or more words in a surname, such as in compound surnames. Compound surnames can be composed of separate names, such as in traditional Spanish culture, they can be hyphenated together, or may contain prefixes. Using names has been documented in even the oldest historical records. Examples of surnames are documented in the 11th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
