Refined thorium abundances for lunar red spots: Implications for evolved, nonmare volcanism on the Moon

Details Refined thorium abundances for lunar red spots: Implications for evolved, nonmare volcanism on the Moon Refined thorium abundances for lunar red spots: Implications for evolved, nonmare volcanism on the Moon

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006jgre..11106002h&link_type=abstract

Journal of Geophysical Research, Volume 111, Issue E6, CiteID E06002

Mathematics

Logic

13

Planetary Sciences: Solid Surface Planets: Remote Sensing, Planetary Sciences: Solid Surface Planets: Surface Materials And Properties, Planetary Sciences: Solid Surface Planets: Volcanism (6063, 8148, 8450), Planetary Sciences: Solid Surface Planets: Instruments And Techniques

Scientific paper

We have used improved knowledge of the spatial distribution of thorium (Th) on the lunar surface, in conjunction with a forward modeling analysis of Lunar Prospector gamma ray data, to estimate the thorium abundances of lunar red spots. The results from this study can be combined with preexisting compositional and morphologic evidence to suggest that Hansteen Alpha, the Gruithuisen domes, and the Lassell massif are silicic, nonmare, volcanic constructs, similar in nature to terrestrial rhyolite domes. We propose that either silicate liquid immiscibility or, more likely, basaltic underplating could have produced lunar rhyolite domes. Thus the Lunar Prospector data presented in this study provide new information about the full range of volcanic and crustal processes that could have occurred on the Moon.

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