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rubble-pile asteroids

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Journal Article
Journal: Geology
Published: 10 July 2017
Geology (2017) 45 (9): 819-822.
..., they provide a known geological context for the samples and their analyses. Asteroid 25143 Itokawa is a rubble-pile asteroid consisting of reaccumulated fragments from a catastrophically disrupted monolithic parent asteroid, and from which regolith dust particles have been recovered by the Hayabusa space probe...
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Journal Article
Journal: Geology
Published: 01 September 2008
Geology (2008) 36 (9): 687-690.
... asteroid of >100 km, from which it was liberated during a catastrophic breakup, and yet it samples materials with a wide range of thermal metamorphism. Either the Karin progenitor fortuitously sampled a region with a wide range of metamorphism, or it was a rubble pile from the breakup of the Koronis...
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Series: Geological Society, London, Special Publications
Published: 01 January 2006
DOI: 10.1144/GSL.SP.2006.256.01.19
EISBN: 9781862395046
... ). There also seems to be an extensive regolith development with numerous loose rocks, which is perhaps rather surprising bearing in mind the low-gravity environment. It is possible that Itokawa is an example of a rubble pile asteroid. Hayabusa should have returned to Earth in 2007 with a few grammes...
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Series: Geological Society, London, Special Publications
Published: 01 January 2015
DOI: 10.1144/SP401.18
EISBN: 9781862396777
... movement on a ‘rubble pileasteroid. It is therefore clear that determining how linear features formed on these asteroids yields important information about their internal structure and strength, as well as on the nature and history of the asteroid itself. Vesta presents an intermediate style...
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Journal Article
Journal: Elements
Published: 01 February 2014
Elements (2014) 10 (1): 19-24.
... it suggests that a large number of asteroids, in particular those originating from the disintegration of a larger body as a result of a collision, are rubble piles formed by reaccumulation. Most objects larger than 125 km are likely to be primordial. Although most of them have probably been affected...
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Journal Article
Journal: Elements
Published: 01 February 2014
Elements (2014) 10 (1): 11-17.
... asteroids are thought to be piles of rubble held together loosely by gravity ( Michel and Richardson 2013 ; see also Tsuchiyama 2014 this issue). The largest asteroids (those larger than ~100 km), however, are probably primordial objects that were never disrupted ( Asphaug 2009 ). After almost two...
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Series: European Mineralogical Union Notes in Mineralogy
Published: 01 January 2015
DOI: 10.1180/EMU-notes.15.3
EISBN: 9780903056564
... porosities as high as 50–60% ( Consolmagno and Britt, 1998 ; Britt and Consolmagno, 2003 ). By looking at the meteorite evidence this can be explained by having significant amounts of macroporosity (perhaps due to having originally been rubble piles) and/or significant amounts of ice in their interiors...
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Journal Article
Published: 01 January 2008
Reviews in Mineralogy and Geochemistry (2008) 68 (1): 429-462.
... that alteration occurred in the presence of aqueous solutions under variable physico-chemical conditions (temperature, water:rock ratio, pH, f O 2 , and fluid compositions) in an asteroidal setting; it started within 1–2 m.y. after formation of the CV CAIs, was multistage, and lasted up to 15 m.y. ( Krot et al...
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Series: Geological Society, London, Special Publications
Published: 01 January 2011
DOI: 10.1144/SP356.3
EISBN: 9781862396043
... is a ‘rubble pile’ is consistent with our work. The preferred hypothesis also sheds light on the origin of crater chains on Eros, and on impact processes in the early stages of crater excavation. The relative ages of the grooves from superposition relations show them to be younger than all craters larger...
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Journal Article
Journal: Elements
Published: 01 February 2014
Elements (2014) 10 (1): 45-50.
... . 1 a ). The porosity of Itokawa is estimated to be about 40% based on its low bulk density (1.9 g/cm 3 ). The presence of a large number of boulders and the high porosity imply that Itokawa is a rubble-pile asteroid that was formed by the early collisional breakup of a preexisting large parent body...
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Journal Article
Published: 01 November 2016
American Mineralogist (2016) 101 (11): 2452-2467.
...Rhian H. Jones; Francis M. Mccubbin; Yunbin Guan Abstract Phosphate minerals in ordinary chondrites provide a record of fluids that were present during metamorphic heating of the chondrite parent asteroids. We have carried out a petrographic study of the phosphate minerals, merrillite and apatite...
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Journal Article
Published: 01 May 2007
Journal of the Geological Society (2007) 164 (3): 481-492.
... formed layered parent bodies with higher petrological type samples more deeply buried. The inferred radius of chondrite parent bodies is c . 80–95 km ( Bennett & McSween 1996 ). However, it is possible that later disruption led to a ‘rubble pileasteroid in which different petrological types ended...
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Journal Article
Published: 01 January 2011
Journal of the Geological Society (2011) 168 (1): 1-14.
.... The rubble-pile asteroid Itokawa as observed by Hayabusa Science 2006 312 1330 1334 Gerhard L.C. Anderson S.B. Fischer D.W. Leighton M.W. Kolata D.R. Oltz D.T. Eidel J.J. Petroleum geology of the Williston Basin Interior Cratonic Basins 1990 51 507 559...
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Journal Article
Published: 17 October 2012
Canadian Journal of Earth Sciences (2012) 50 (1): 32-43.
...-metamorphism part of the H chondrite parent body, possibly from a “rubble pileasteroid near major planet resonances in the main belt asteroids. Given its low degree of weathering, low shock, and lack of evident brecciation, Wood Lake is a suitable candidate for follow-up studies to elucidate its history...
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Series: Geological Society, London, Special Publications
Published: 01 January 2006
DOI: 10.1144/GSL.SP.2006.256.01.24
EISBN: 9781862395046
...?) population and its diversity. This, coupled with advances in radar and spectroscopic technologies, will aid in understanding the nature of NEAs: whether they are discrete coherent bodies, rubble piles or co-joined asteroids. Each of these has important implications for the terrestrial meteorite flux and its...
FIGURES
Series: European Mineralogical Union Notes in Mineralogy
Published: 01 January 2015
DOI: 10.1180/EMU-notes.15.1
EISBN: 9780903056564
... mission), are dense, rocky planetary bodies, but many smaller ones have much lower densities than normal rock, and this, together with low spin-rates, suggests that most asteroids with diameters of 0.1–20 km are piles of rubble, loosely bound by gravity. Evidently from time to time the rubble piles...
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Journal Article
Journal: Elements
Published: 01 August 2006
Elements (2006) 2 (4): 205-210.
... in chondrites, a class of meteorite with compositions similar to that determined spectroscopically for the Sun's photosphere. Chondrites are composed of a range of early debris, much of which had not been processed by melting in planetary objects. They come from asteroids that accumulated as rubble piles...
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Journal Article
Published: 01 April 2016
Geochemical Perspectives (2016) 5 (1): 21-35.
... mixing and variable cooling within a rubble pile, have also been proposed ( e.g. , Davison et al ., 2012 ; Scott et al ., 2014 ). A major problem applying the 182 Hf- 182 W system to the chronology of early solar system metals has been post-formation changes in the isotopic composition of W...
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Journal Article
Journal: Elements
Published: 01 April 2018
Elements (2018) 14 (2): 95-100.
... particles. Morphology of cometary particles: a) compact, b) shattered cluster, c) compact cluster, d) rubble pile. Image credit: COSIMA consortium led by the Max-Planck Institut für Extraterrestrische Physik, Garching, Germany. Figure 3 The cometary zoo. A light-hearted classification...
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Journal Article
Published: 01 January 2002
Reviews in Mineralogy and Geochemistry (2002) 47 (1): 101-124.
... temperature)? Did it occur within an internally heated, stratified parent body, or within pieces of a rubble pile that were heated, broken apart and reassembled? Within a stratified parent body, the expectation would be that the more equilibrated (higher petrographic grade) meteorites would have come from...
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