Meteoritics: evidence for chemical fractionation in the early Solar System
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چکیده
منابع مشابه
Early Chemical History of the Solar System
The extreme antiquity and lack of evidence for significant chemical processing of the chondritic meteorites since they were formed suggest he possibility that their chemistry and mineralogy may have been established uring the condensation of the solar system. By using equilibrium thermodynamics, the sequence of condensation of mineral phases from a cooling nebula of solar composition has been c...
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Bulk chondritic meteorites and terrestrial planets show a monotonic depletion in moderately volatile and volatile elements relative to the Sun's photosphere and CI carbonaceous chondrites. Although volatile depletion was the most fundamental chemical process affecting the inner solar nebula, debate continues as to its cause. Carbonaceous chondrites are the most primitive rocks available to us, ...
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Krypton is the best candidate for deter•ning limits on solid/gas fractionation i the early sun beca• of the smoothness of the odd-mass abundance curve in its mass region, which permits relatively precise interpolations f its abundance assuming ofractionation. Here we calculate the solar-system Kr abundance from solar-wind noble-gas ratios, determined previously by lowtemperature oxidations of l...
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this thesis is based upon the works of samuel beckett. one of the greatest writers of contemporary literature. here, i have tried to focus on one of the main themes in becketts works: the search for the real "me" or the real self, which is not only a problem to be solved for beckett man but also for each of us. i have tried to show becketts techniques in approaching this unattainable goal, base...
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ژورنال
عنوان ژورنال: Nature
سال: 1982
ISSN: 0028-0836,1476-4687
DOI: 10.1038/297020a0