9. Unusual Primitive Meteorites: Chondritic Inclusions from Group IAB Iron Meteorites
نویسندگان
چکیده
منابع مشابه
Weathering of Chondritic Meteorites
Meteorites are frequently not the pristine record of early solar system processes that we would like them to be. Many unique meteorites, samples that can further our understanding of the environment of the early solar system, are finds, so a knowledge of terrestrial weathering becomes a requirement to accurately interpret their preterrestrial history. This chapter outlines the weathering proces...
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Introduction. Recent Mo isotopic studies of meteorites reported evidence for differences in isotopic compositions for whole rocks of some primitive [1-3] and differentiated meteorites [2,4], relative to terrestrial materials. Enrichments of rand p-process isotopes of up to 3-4 ε units (ε unit = parts in 10) over s-process dominated isotopes are the most prominent features. Certain types of pres...
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Introduction: Nucleosynthetic anomalies have been reported in Mo and Ru from bulk chondrites, achondrites and irons [1,2], but are either more limited in W [3,4,5] or absent in Os [5,6]. The origin of these anomalies may represent spatial and/or temporal hetero-geneity in the sources that supplied material to the nas-cent solar nebula, and/or may have been enhanced by chemical processing within...
متن کاملThe rhodium, silver and indium content of some chondritic meteorites
Ah&act-By neutron activation analysis the rhodium, silver and indium oontent of five chondritic meteorites has been determined. The average data are 0.186 and 0.094 p.p.m. for rhodium and silver. The upper limit for the indium content is 0.001 p.p.m. The values for rhodium and silver are in fair agreement with the data estimated by SUESS and UREY; the indium values, however, are lower by a fact...
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1977
ISSN: 0252-9211
DOI: 10.1017/s0252921100070342