Other
Scientific paper
Apr 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989amsci..77..146m&link_type=abstract
American Scientist (ISSN 0003-0996), vol. 77, Mar.-Apr. 1989, p. 146-153.
Other
3
Meteorites, Chondrites, Planets, Formation, Origin, Chondritic Material, Composition, Chondrules, Inclusions, Age, Solar System, Isotopes, Gases, Volatiles, Depletion, Chemistry, Element Ratios, Density, Models, Mixing, Achondrites, Condensation, Solar Nebula, Temperature, Pressure, Mantle, Differentiation, Core, Accretion, Theoretical Studies, Cosmochemistry, Refractory Material, Siderophiles, Carbonaceous Chondrites
Scientific paper
Estimating the chemical composition of solar system planets is presently undertaken through an exploration of the clues offered by chondritic meteorites, which have been hypothesized to be relic samples of the types of matter that accreted to form the planets. While carbonaceous chondrites have the highest inventory of volatile elements and may accordingly have formed at the greatest distance from the sun, most other chondrite and achondrite classes contain small chunks of carbonaceous chondrites, and represent meteoroids that struck asteroids closer to the sun and were incorporated into their surface material. Attention is given to bulk compositions of the four inner planets estimated on the basis of chondrite-component mixing and condensation. The compositions are presented in terms of a refractory component, siderophile components, and a magnesium silicate component.
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