Figure 7.
H2O contents and H isotopic compositions measured for apatite grains in a range of highlands samples. Note the log scale for the x-axis. Data sources are from [54,64,74,75]. All data except for sample 77538 have been corrected for contribution of spallogenic H and D. Cosmic ray exposure ages used to correct data are 210±30 Ma for 76535 [76–78], 292±14 Ma for 78235 [79], 310 Ma for 14161 [80] and 27.6±1.5 Ma for 14305 [81]. Additional data sources: mare basalt, [52,54,57]; CI chondrites, [48]; and Earth's mantle range, [82] and references therein].