Fig. 2: Water abundance and δD of melt inclusions and apatite from CE6 mare basalt fragments. | Nature

Fig. 2: Water abundance and δD of melt inclusions and apatite from CE6 mare basalt fragments.

From: Water abundance in the lunar farside mantle

Fig. 2

Olivine-hosted melt inclusions have notably lower water abundances than ilmenite-hosted melt inclusions and apatite, as well as mostly lower δD values. Most melt inclusions have a lunar mantle-like δD value (yellow band)9,23,24,40. Three ilmenite-hosted melt inclusions have elevated δD values that are unresolvable from those of apatite within analytical uncertainties. Melt inclusions from mare basalts (MI in basalt) are from refs. 9,23,42, high- and low-Ti mare basalts are referred to the datasets compiled by refs. 1,9. The CE6 datasets have been corrected for a nominal CRE of 108 million years (Methods). The arrow represents the enrichment of water in the residual melt during crystallization of the parent melt. The dashed line is the degassing trend from a water abundance of 200 μg g−1 with a δD value of −200‰. Note the horizontal axis is a log scale. The error bars are 2σ. Ol-MI, olivine-hosted melt inclusion; Ilm-MI, ilmenite-hosted melt inclusion; LT, low-titanium; and HT, high-titanium.

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