This section presents a quick overview of the noble gas geochemistry in meteorites, as building blocks of the Earth. The Paris Group never analysed meteorites for two main reasons. The first is that the noble gas concentrations in meteorites are orders of magnitude higher than those of terrestrial samples, which were the main interest of the Paris group at that time (1980–2000). Therefore, contamination and memory effects were a major concern. The second, in my opinion, is that Claude Allègre, who likes simple ideas, was not really enthusiastic about the complexity of the noble gas systematics in meteorites.
In...
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