New evidence for lunar basalt metasomatism by underlying regolith

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Earth-like δD values reported from lunar mare-basalt apatites have typically been interpreted to reflect the intrinsic isotopic composition of lunar-mantle water. New data indicates that some of these basalts are also characterized by having experienced a slow cooling history after their emplacement onto the lunar surface. This suggests that these basalts may have experienced metasomatism by fluxes generated during the degassing of the lunar regolith induced by the long-duration, higherature residence times of overlying basalts.

Original languageEnglish
Pages (from-to)1497-1498
Number of pages2
JournalThe American Mineralogist
Issue number7
Publication statusPublished - 1 Jul 2016


  • basalt metasomatism
  • hydrogen isotopes
  • lunar petrology
  • Lunar volatiles


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