Figure 9 | Scientific Reports

Figure 9

From: The origin and fate of volatile elements on Earth revisited in light of noble gas data obtained from comet 67P/Churyumov-Gerasimenko

Figure 9

Three-isotope diagram of Xe isotopes showing the relationships between planetary and cosmochemical reservoirs. The solar composition (SW)32 is intermediate between, on one side, the r-process depleted cometary signature12, and, on the other side, the Xe-HL and Xe-N components carried out by presolar nanodiamonds and SiC, respectively87,88. The relationship between SW, Q and AVCC is shown in the upper left panel. The AVCC signature represents a slightly higher contribution of Xe-HL from fractionated SW-Xe, relative to Q-Xe86, which was itself produced by 98.5% SW-Xe that experienced linear mass dependent fractionation of 10.2 u-1 favouring the heavy isotopes, and mixing with 1.5% Xe-HL88. At last, we show the U-Xe composition11, accounted for by mixing ~20% cometary Xe with ~80% chondritic Xe12. In this plot, we note that the MDF line (dotted line) is interestingly very close to general mixing trends.

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