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(a) Depth profiles of the variations of the D/H ratios measured in two grains extracted from soil 71501 and regolith breccia 79035 (after [41]). (b) D/H ratios versus H2O contents of agglutinitic glasses and a plagioclase extracted from three soil samples (after [42]). Arrow for mixing corresponds to the one drawn in Liu et al. [42] for mixing with cometary and meteoritic materials.
