Anomalous xenon isotopes in carbonaceous chondrites.
نویسندگان
چکیده
منابع مشابه
Carbonaceous Nanospheres in Chondrites
Introduction: In the 1960s, prior to the widespread use of TEMs, several papers described rounded, micron-sized organic particles from carbonaceous chondrite (CC) meteorites [1-3]. Some of these particles were hollow. Except for two early TEM studies [4, 5], the rounded structures were essentially neglected until similar material was discovered in the Tagish Lake meteorite [6]. We subsequently ...
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Introduction: Carbonaceous chondrites play a key role in determining the history of the early Solar System; a knowledge of the oxygen isotope variation within these materials will not only help in our understanding of the origin and evolution of those meteorites, but also the early Solar System reservoirs from which they formed [1]. However, several problems present themselves when trying to in...
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Introduction: The results of a number of studies seem to indicate that CO3 chondrites can be subdivided into a metamorphic series analogous to that seen in ordinary chondrites [1,2,3]. It has been suggested that this sequence is the result of hydrothermal alteration on the CO parent body [4]. One particularly intriguing feature of CO3 chondrites is the reported general correlation between whole...
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Powdered samples of a suite of 14 CR and CR-like chondrites, ranging from petrologic grade 1 to 3, were spectrally characterized over the 0.3–2.5 lm interval as part of a larger study of carbonaceous chondrite reflectance spectra. Spectral analysis was complicated by absorption bands due to Fe oxyhydroxides near 0.9 lm, resulting from terrestrial weathering. This absorption feature masks expect...
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ژورنال
عنوان ژورنال: GEOCHEMICAL JOURNAL
سال: 1986
ISSN: 0016-7002
DOI: 10.2343/geochemj.19.251