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首页> 外文期刊>Terra Nova >Isotope fractionation of neon during stepheating extraction?: a comment on ‘Re-interpretation of the existence of a primitive plume under Australia based on neon isotope fractionation during step heating’ by Gautheron and Moreira (2003)
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Isotope fractionation of neon during stepheating extraction?: a comment on ‘Re-interpretation of the existence of a primitive plume under Australia based on neon isotope fractionation during step heating’ by Gautheron and Moreira (2003)

机译：步进加热萃取过程中氖的同位素分馏？：评论者：Gautheron和Moreira（2003）的评论“基于步进加热过程中的氖同位素分馏对澳大利亚下原始羽流的存在的重新解释”

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摘要

Using a Rayleigh distillation fractionation model, we calculate that the maximum isotope fractionation potentially achievable is less than 5% during the early stages of gas release from a sample. Our calculation corrects the erroneous conclusions of Gautheron and Moreira (2003), who re-interpreted the plume-like neon isotopic compositions found in metasomatic apatite from a south-eastern Australian xenolith (Matsumoto et al., 1997) to be the result of Rayleigh-type isotope fractionation of originally MORB-type neon during stepheating gas extraction. We stress that the modelling of neon isotopic fractionation by Gautheron and Moreira (2003) is incorrect, and that the finding of a plume-like neon isotopic composition in the apatite by Matsumoto et al. (1997) remains a quite valid and robust conclusion.
机译：使用瑞利蒸馏分馏模型，我们计算出在从样品释放气体的早期阶段，可能实现的最大同位素分馏小于5％。我们的计算纠正了Gautheron和Moreira（2003）的错误结论，他们重新解释了澳大利亚东南部异种岩的交代磷灰石中发现的羽状氖同位素组成（Matsumoto等，1997）是雷利的结果。步进加热气体萃取过程中原始MORB型氖的X型同位素分馏。我们强调Gautheron和Moreira（2003）对氖同位素分馏的建模是不正确的，而松本等人在磷灰石中发现了羽状氖氖同位素组成。 （1997）仍然是一个非常有效和可靠的结论。

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