Glossary of meteoritics – Wikipedia
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From Wikipedia, the free encyclopedia
This is a glossary of terms used in meteoritics, the science of meteorites.
- Dar al Gani – a meteorite field in the Libyan Sahara.
- Desert glass – natural glass found in deserts formed from the silica in sand as a result of lightning strikes or meteor impacts.
- Differentiated – a meteorite that has undergone igneous differentiation. (See: achondrite)
- Differentiation – usually the process of a planetesimal forming an iron core and silicate mantle.
- Duo – a grouping of two meteorites that share similar characteristics (see Grouplet).
- E – can refer to enstatite chondrite or to an iron meteorite designation (Roman numeral and letter).
- Eagle Station grouplet – a set of pallasite meteorite specimen that do not fit into any of the defined pallasite groups.
- Electrophonic bolide – a meteoroid which produces a measurable discharge of electromagnetic energy (EMP) during its passage through the atmosphere.
- Enstatite achondrite – a meteorite that is mostly composed of enstatite. Usually part of the aubrite group.
- Enstatite chondrite – a rare form of meteorite thought to comprise only 2% of chondrites.
- Fall – a meteorite that was seen while it fell to Earth and found.
- Find – a meteorite that was found without seeing it fall.
- Fossil meteorite – a meteorite that was buried under layers of sediment before the start of the Quaternary period. Some or all of the original cosmic material has been replaced by diagenetic minerals.[3]: 320 (It is, however, not a fossil).
- Fusion crust – a coating on meteorites that forms during their passage through the atmosphere.
- Group – a collection of five or more meteorites sharing similar characteristics.[1]
- Grouplet – a collection of fewer than five meteorites sharing similar characteristics.[1]
- Hammer Stone – a specific individual meteorite that has hit either a human, man-made object, and/or an animal.
- HED – abbreviation for three basaltic achondrite groups howardite, eucrite and diogenite.
- HED meteorite – a clan of basaltic achondrites.
- Hexahedrite – a structural class of iron meteorites having a relatively low nickel content
- Hunter – a person who searches for meteorites.
- Impact breccia – rock composed of fragments of terrestrial, extraterrestrial or mixed origin fused by the energy of impact
- Impactite – informal term for a terrestrial rock resulting from the shocking impact of a meteor.
- Iron–nickel alloy – an alternative expression for meteoric iron.
- Iron meteorite – a meteorite that is mainly composed of meteoric iron.
- Nakhlite – a group of Martian meteorites
- Neumann lines (or Neumann bands) – a pattern of fine parallel lines seen in some iron meteorites, thought to be due to impact events on the parent body
- Nonmagmatic meteorite – (deprecated) iron meteorites that were thought to have not formed by igneous processes.
- O – usually refers to ordinary chondrite
- Observed fall – a meteorite that was seen when it fell to Earth.
- Octahedrite – the most common structural class of iron meteorites.
- Ordinary chondrite – a chondrite meteorite, where ‘ordinary’ means that it is the most common found
- Taenite – a native metal (mineral) found in meteorites.
- Tamdakht – a meteorite that fell near Ouarzazate, Morocco on 2008-12-20 producing a strewn field of approximately 25 km (16 mi) by 2 km (1.2 mi) and two small impact craters.
- Tektite – glassy terrestrial debris created by meteorite impacts.
- Total known weight (TKW) – total known mass of a meteorite.
- Trio – a grouping of three meteorites that share similar characteristics (see Grouplet).
- Type – subdivision of meteorites. Loosely defined. Usually refers to chondrite, achondrite and sometimes primitive achondrite.[1]
References[edit]
- ^ a b c d e M. K. Weisberg; T. J. McCoy, A. N. Krot (2006). “Systematics and Evaluation of Meteorite Classification” (PDF). In D. S. Lauretta; H. Y. McSween, Jr. (eds.). Meteorites and the early solar system II. Tucson: University of Arizona Press. pp. 19–52, 942. ISBN 978-0816525621. Retrieved 15 December 2012.
- ^ McSween, Harry Y. (2021). Cosmochemistry. Gary R. Huss. Cambridge, United Kingdom. ISBN 978-1-108-88526-3. OCLC 1259294621.
- ^ Schmitz, B.; Tassinari, M. (2001), “Fossil Meteorites”, in Peucker-Ehrenbrink, B.; Schmitz, B. (eds.), Accretion of Extraterrestrial Matter Throughout Earth’s History, New York: Springer, pp. 319–31, doi:10.1007/978-1-4419-8694-8_17, ISBN 978-1-4613-4668-5
- ^ Agee, C. B.; N.V. Wilson; F.M. McCubbin; Z.D. Sharp; K. Ziegler (2012). “Basaltic Breccia NWA 7034: New ungrouped planetary Achondrite” (PDF). 43rd Lunar and Planetary Science Conference (1659): 2690. Bibcode:2012LPI….43.2690A. Retrieved 4 January 2013.
- ^ Goldstein, J. I.; Michael, J. R. (1 April 2006). “The formation of plessite in meteoritic metal”. Meteoritics & Planetary Science. 41 (4): 553–70. Bibcode:2006M&PS…41..553G. doi:10.1111/j.1945-5100.2006.tb00482.x.
- ^ “regmaglypts”. Meteorite or Meteorwrong?. Department of Earth and Planetary Sciences, Washington University in St. Louis. Archived from the original on 6 March 2016. Retrieved 15 January 2013.
- ^ “The Weston Meteorite (Yale Peabody Museum)”. 7 December 2010.
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