“chondrule”的概念、定义、翻译、参考文献-科学参考

chondrule

Astronomy

A small spheroidal object, typically about 0.2–3.8 mm in size, although 0.5–1.5 mm is more usual, found in all chondritic meteorites except the CI subgroup of carbonaceous chondrites. The composition of chondrules varies widely, and may consist of one or more of any number of silicate minerals, or glass. Chondrules apparently existed independently before their incorporation in meteorites, but their precise origin is still unclear. Whatever their origin, chondrules are clearly some of the most primitive solid material in the Solar System.

Space Exploration

A small, round mass of the silicate minerals olivine and orthopyroxene. Chondrites (stony meteorites) are characterized by the presence of chondrules.
Chondrules are thought to be mineral grains that condensed from hot gas in the early Solar System, most of which were later incorporated into larger bodies from which the planets formed.

Geology and Earth Sciences

Small (0.1–2.0 mm), glassy, spherical to subspherical droplets, diagnostic of chondritic meteorites. They are thought to have been produced by the melting and sudden quenching of pre-existing silicate material. See chondrite.

单词	chondrule
释义	chondrule Astronomy A small spheroidal object, typically about 0.2–3.8 mm in size, although 0.5–1.5 mm is more usual, found in all chondritic meteorites except the CI subgroup of carbonaceous chondrites. The composition of chondrules varies widely, and may consist of one or more of any number of silicate minerals, or glass. Chondrules apparently existed independently before their incorporation in meteorites, but their precise origin is still unclear. Whatever their origin, chondrules are clearly some of the most primitive solid material in the Solar System. Space Exploration A small, round mass of the silicate minerals olivine and orthopyroxene. Chondrites (stony meteorites) are characterized by the presence of chondrules. Chondrules are thought to be mineral grains that condensed from hot gas in the early Solar System, most of which were later incorporated into larger bodies from which the planets formed. Geology and Earth Sciences Small (0.1–2.0 mm), glassy, spherical to subspherical droplets, diagnostic of chondritic meteorites. They are thought to have been produced by the melting and sudden quenching of pre-existing silicate material. See chondrite.
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