Fig. 3: Elemental abundance ratios of the different lunar soils.
From: Weak influence of the secondary surface processes on the regolith of Chang’E-5 landing site
a 4He/36Ar ratios plotted versus 4He/20Ne ratios. b 20Ne/36Ar ratios plotted versus 4He/20Ne ratios.Unfractionated solar wind 4He/36Ar and 20Ne/36Ar ratios were shown in Table 1. It could be seen that 4He/36Ar ratio and 20Ne/36Ar ratios in mare soils are less fractionated than those in highland soils. Furthermore, CE-5 soils seem to preserve more light noble gas compared with most mare soils returned by other missions. Analytical uncertainties of 4He/36Ar ratio and 20Ne/36Ar ratio of CE-5 soil are at 1σ. The elemental abundance ratios of Apollo and Luna soils are from refs. 7,16,17,18,19,27,50,51,52,53,54,55,56.
