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An achondrite [1] is a stony meteorite that does not contain chondrules. [2] [3] It consists of material similar to terrestrial basalts or plutonic rocks and has been differentiated and reprocessed to a lesser or greater degree due to melting and recrystallization on or within meteorite parent bodies. [4] [5] As a result, achondrites have ...
- Primitive achondrite
Primitive achondrites are a subdivision of meteorites. They...
- Chondrite
A chondrite / ˈkɒndraɪt / is a stony (non- metallic)...
- Primitive achondrite
diogenite. achondrite, any stony meteorite containing no chondrule s (small, roughly spherical objects that formed in the solar nebula ). The only exclusions are carbonaceous chondrite s of the CI group, which, though they are clearly chondrite s, are so heavily altered by water that any evidence for their having contained chondrules is lost.
- The Editors of Encyclopaedia Britannica
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Achondrites. Achondrites lack chondrules, originate on differentiated planetary bodies (ie planetary bodies with a distinct core and crust), such as asteroids, planets, or moons, and were reformed from molten fragments that were flung into space as the result of another collision. Because achondrites closely resemble terrestrial rocks to the ...
Meteorite - Achondrite, Chondrite, Stony: Achondrites, their name meaning “without chondrites,” are a relatively small but diverse group of meteorites. They exhibit a range of features that would be expected if their parent bodies experienced widespread melting: igneous features similar to those observed in terrestrial volcanic rocks, segregation of molten metal (possibly into a core) from ...
1.6.5 Summary. Achondrites as a whole show one curious property when compared with the total range of meteorite types – chondrites, achondrites, stony irons, and irons. Many of the achondrite types occupy a very limited range of oxygen-isotopic compositions (Clayton and Mayeda, 1996; Greenwood et al., 2005; Wiechert et al., 2004 ), yet ...
