|
Omolon (meteorite)
Omolon is a meteorite fallen in 1981 in the Omolon River basin, Magadan (Russia). It is a pallasite. History On May 16, 1981 at 5:10 there was a report from a meteorological station of a bright fireball. A mass of was found in 1983 by I. Tynavie, who had observed the fall on May 16, 1981. The meteorite was recovered in June 1990. Specimens Main mass: North-East Complex Research Institute, Russian Academy of Sciences Far-East Division, Ul. Portovaya 16, Magadan 685000, Russia. See also * Glossary of meteoritics This is a glossary of terms used in meteoritics, the science of meteorites. # * 2 Pallas – an asteroid from the asteroid belt and one of the likely parent bodies of the CR meteorites. * 4 Vesta – second-largest asteroid in the asteroid b ... * Meteorite Notes External links Meteoritical Bulletin Database Meteorites found in Russia {{Meteorite-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pallasite
The pallasites are a class of stony–iron meteorite. Structure and composition It consists of centimetre-sized olivine crystals of peridot quality in an iron-nickel matrix. Coarser metal areas develop Widmanstätten patterns upon etching. Minor constituents are schreibersite, troilite, chromite, pyroxenes, and phosphates (whitlockite, stanfieldite, farringtonite, and merrillite). Classification and subgroups Using the oxygen isotopic composition, meteoric iron composition and silicate composition pallasites are divided into 4 subgroups:O. Richard Norton. ''The Cambridge encyclopedia of meteorites''. Cambridge, Cambridge University Press, 2002. . * Main group pallasites (PMG): Almost all pallasites * Eagle Station group (PES): 5 specimens known. They are related to IIF irons. * Pyroxene Pallasite grouplet (PPX): Counts only Vermillion and Yamato 8451. They take their name from the high orthopyroxene content (about 5%). Metal matrix shows a fine octahedrite Widmanstätten pat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russia
Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the world, with its internationally recognised territory covering , and encompassing one-eighth of Earth's inhabitable landmass. Russia extends across Time in Russia, eleven time zones and shares Borders of Russia, land boundaries with fourteen countries, more than List of countries and territories by land borders, any other country but China. It is the List of countries and dependencies by population, world's ninth-most populous country and List of European countries by population, Europe's most populous country, with a population of 146 million people. The country's capital and List of cities and towns in Russia by population, largest city is Moscow, the List of European cities by population within city limits, largest city entirely within E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magadan
Magadan ( rus, Магадан, p=məɡɐˈdan) is a port town and the administrative center of Magadan Oblast, Russia, located on the Sea of Okhotsk in Nagayev Bay (within Taui Bay) and serving as a gateway to the Kolyma region. History Magadan was founded in 1930 in the Ola (river) valley,Vazhenin, p. 4 near the settlement of Nagayevo. During the Stalin era, Magadan was a major transit center for political prisoners sent to forced labour camps. From 1932 to 1953, it was the administrative centre of the Dalstroy organisation—a vast forced-labour gold-mining operation and forced-labour camp system. The first director of Dalstroy was Eduard Berzin, who between 1932 and 1937 established the infrastructure of the forced labour camps in Magadan. Berzin was executed in 1938 by Stalin, towards the end of the Great Purge. The town later served as a port for exporting gold and other metals mined in the Kolyma region. Its size and population grew quickly as facilities were ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Omolon River
The Omolon (russian: Омолон; sah, Омолоон) is the principal tributary of the Kolyma in northeast Siberia. The length of the river is . The area of its basin is . The Omolon freezes up in October and stays under ice until late May through early June. The lower are navigable. Course It begins in the Kolyma Highlands, Magadan Oblast, less than from the Sea of Okhotsk, flows first northeast, with the Kedon Range to the west, then it bends northwest and forms part of the border of Magadan and Chukotka, with the Yukaghir Highlands to the west. At the western end of the Ush-Urekchen it turns north and crosses Chukotka, briefly enters the Sakha Republic and joins the Kolyma upstream from the Arctic. Its basin is surrounded by: (west) branches of the Kolyma, (south) Penzhina and others that flow south, (east) Anadyr and (northeast) Bolshoy Anyuy. Its main tributaries are the Kegali, the west-flowing Oloy (at , the largest tributary), Oloychan, Kedon, Namyndykan, Mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pallasite
The pallasites are a class of stony–iron meteorite. Structure and composition It consists of centimetre-sized olivine crystals of peridot quality in an iron-nickel matrix. Coarser metal areas develop Widmanstätten patterns upon etching. Minor constituents are schreibersite, troilite, chromite, pyroxenes, and phosphates (whitlockite, stanfieldite, farringtonite, and merrillite). Classification and subgroups Using the oxygen isotopic composition, meteoric iron composition and silicate composition pallasites are divided into 4 subgroups:O. Richard Norton. ''The Cambridge encyclopedia of meteorites''. Cambridge, Cambridge University Press, 2002. . * Main group pallasites (PMG): Almost all pallasites * Eagle Station group (PES): 5 specimens known. They are related to IIF irons. * Pyroxene Pallasite grouplet (PPX): Counts only Vermillion and Yamato 8451. They take their name from the high orthopyroxene content (about 5%). Metal matrix shows a fine octahedrite Widmanstätten pat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glossary Of Meteoritics
This is a glossary of terms used in meteoritics, the science of meteorites. # * 2 Pallas – an asteroid from the asteroid belt and one of the likely parent bodies of the CR meteorites. * 4 Vesta – second-largest asteroid in the asteroid belt and likely source of the HED meteorites. * 221 Eos – an asteroid from the asteroid belt and one of the likely parent bodies of the CO meteorites. * 289 Nenetta – an asteroid from the asteroid belt and one of the likely parent bodies of the angrites. * 3103 Eger – an asteroid from the asteroid belt and one of the likely parent bodies of the aubrites. * 3819 Robinson – an asteroid from the asteroid belt and one of the likely parent bodies of the angrites. * IA meteorite – an iron meteorite group now part of the IAB group/complex. * IAB meteorite – an iron meteorite and primitive achondrite of the IAB group/complex. * IB meteorite – an iron meteorite group now part of the IAB group/complex. * IC meteorite – an ... [...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] |
