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São Julião De Moreira (meteorite)
São Julião de Moreira is a 162 kg meteorite found in Moreira do Lima, Ponte de Lima, Portugal. History The meteorite was found in 1877. The fall was not observed, but was dated to 770,000 years ago. It is a single meteorite, with a mass of 162 kg, almost spherical in shape and about 35 cm in diameter, which was later divided into many pieces. It was covered with a thick layer of rust and buried in an agricultural land at Quinta das Cruzes, 1.2 meters deep, when the land was being prepared for planting vines. Composition and classification It is a octahedrite Octahedrites are the most common structural class of iron meteorites. The structures occur because the meteoric iron has a certain nickel concentration that leads to the exsolution of kamacite out of taenite while cooling. Structure Octahedri .... References {{coord missing, Portugal Meteorites found in Portugal 1877 in Portugal 1877 in science ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Octahedrite
Octahedrites are the most common structural class of iron meteorites. The structures occur because the meteoric iron has a certain nickel concentration that leads to the exsolution of kamacite out of taenite while cooling. Structure Octahedrites derive their name from the crystal structure paralleling an octahedron. Opposite faces are parallel so, although an octahedron has 8 faces, there are only 4 sets of kamacite plates. Due to a long cooling time in the interior of the parent asteroids, these alloys have crystallized into intermixed millimeter-sized bands (from about 0.2 mm to 5 cm). When polished and acid etched the classic Widmanstätten patterns of intersecting lines of lamellar kamacite, are visible. In gaps between the kamacite and taenite lamellae, a fine-grained mixture called plessite is often found. An iron nickel phosphide, schreibersite, is present in most nickel-iron meteorites, as well as an iron-nickel-cobalt carbide, cohenite. Graphite and troili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portugal
Portugal, officially the Portuguese Republic ( pt, República Portuguesa, links=yes ), is a country whose mainland is located on the Iberian Peninsula of Southwestern Europe, and whose territory also includes the Atlantic archipelagos of the Azores and Madeira. It features the westernmost point in continental Europe, and its Iberian portion is bordered to the west and south by the Atlantic Ocean and to the north and east by Spain, the sole country to have a land border with Portugal. Its two archipelagos form two autonomous regions with their own regional governments. Lisbon is the capital and largest city by population. Portugal is the oldest continuously existing nation state on the Iberian Peninsula and one of the oldest in Europe, its territory having been continuously settled, invaded and fought over since prehistoric times. It was inhabited by pre-Celtic and Celtic peoples who had contact with Phoenicians and Ancient Greek traders, it was ruled by the Ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ponte De Lima
Ponte de Lima () is the oldest ''vila'' (chartered town, head of a municipality) in Portugal. It is part of the district of Viana do Castelo. The population in 2011 was 43,498, in an area of 320.25 km2. The town proper has about 2,800 inhabitants. It is named after the long medieval bridge (''ponte'') that passes over the Lima river that runs next to the town. The current Mayor is Victor Mendes, elected by the People's Party (CDS–PP). It is one of the six municipalities in Portugal administered by this party. The municipal holiday is 20 September. General information Ponte de Lima is located on the southern bank of the Lima, a small river with sources in Spain. One of the oldest towns in Portugal (founded on 4 March 1125), it was historically significant as a Roman settlement on the road from Braga to Santiago de Compostela and Lugo, and the first place in Portugal getting a municipal charter. Every second Monday, it holds one of the largest country markets in Portu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meteorite
A meteorite is a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space and survives its passage through the atmosphere to reach the surface of a planet or Natural satellite, moon. When the original object enters the atmosphere, various factors such as friction, pressure, and chemical interactions with the atmospheric gases cause it to heat up and radiate energy. It then becomes a meteor and forms a Meteoroid#Fireball, fireball, also known as a shooting star; astronomers call the brightest examples "Bolide#Astronomy, bolides". Once it settles on the larger body's surface, the meteor becomes a meteorite. Meteorites vary greatly in size. For geologists, a bolide is a meteorite large enough to create an impact crater. Meteorites that are recovered after being observed as they transit the atmosphere and Impact event, impact the Earth are called meteorite falls. All others are known as meteorite finds. Meteorites have traditiona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moreira Do Lima
Moreira may refer to: Places * Moreira (Maia) Moreira, also known as Moreira da Maia, is a Portuguese town (''vila'') and civil parish in the municipality of Maia, Greater Porto, Portugal. It was formed in 2013 by the merger of the former parishes Duas Igrejas, Rio Mau, Goães, Godinhaços, ..., a parish in Maia Municipality, northern Portugal * , a parish in Monção Municipality, northern Portugal * , a parish in Nelas Municipality, central Portugal People * Moreira (name), given name and surname, including a list of people with the name {{disambiguation, geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Octahedrite
Octahedrites are the most common structural class of iron meteorites. The structures occur because the meteoric iron has a certain nickel concentration that leads to the exsolution of kamacite out of taenite while cooling. Structure Octahedrites derive their name from the crystal structure paralleling an octahedron. Opposite faces are parallel so, although an octahedron has 8 faces, there are only 4 sets of kamacite plates. Due to a long cooling time in the interior of the parent asteroids, these alloys have crystallized into intermixed millimeter-sized bands (from about 0.2 mm to 5 cm). When polished and acid etched the classic Widmanstätten patterns of intersecting lines of lamellar kamacite, are visible. In gaps between the kamacite and taenite lamellae, a fine-grained mixture called plessite is often found. An iron nickel phosphide, schreibersite, is present in most nickel-iron meteorites, as well as an iron-nickel-cobalt carbide, cohenite. Graphite and troili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meteorites Found In Portugal
A meteorite is a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space and survives its passage through the atmosphere to reach the surface of a planet or Natural satellite, moon. When the original object enters the atmosphere, various factors such as friction, pressure, and chemical interactions with the atmospheric gases cause it to heat up and radiate energy. It then becomes a meteor and forms a Meteoroid#Fireball, fireball, also known as a shooting star; astronomers call the brightest examples "Bolide#Astronomy, bolides". Once it settles on the larger body's surface, the meteor becomes a meteorite. Meteorites vary greatly in size. For geologists, a bolide is a meteorite large enough to create an impact crater. Meteorites that are recovered after being observed as they transit the atmosphere and Impact event, impact the Earth are called meteorite falls. All others are known as meteorite finds. Meteorites have traditiona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1877 In Portugal
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Events in the year 1877 in Portugal. Incumbents *Monarch: Luís I *President of the Council of Ministers: Fontes Pereira de Melo (until 5 March), António José de Ávila (from 5 March) Events * 4 November - Inauguration of the Maria Pia Bridge, in Porto. * Opening of the Campanhã railway station, in Porto. Births * 2 November - Teixeira de Pascoaes, poet (died 1952) Deaths * 13 September - Alexandre Herculano, novelist, historian (born 1810) See also * List of colonial governors in 1877#Portugal References Portugal Years of the 19th century in Portugal Portugal Portugal, officially the Portuguese Republic ( pt, República Portuguesa, links=yes ), is a country whose mainland is located on the Iberian Peninsula of Southwestern Europe, and whose territory also includes the Atlantic archipelagos of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
