Physics
Scientific paper
May 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30j..20e&link_type=abstract
Geophysical Research Letters, Volume 30, Issue 10, pp. 20-1, CiteID 1513, DOI 10.1029/2003GL017082
Physics
4
Planetary Sciences: Origin And Evolution, Planetology: Solar System Objects: Moon (1221), Volcanology: Planetary Volcanism (5480), Volcanology: Eruption Mechanisms, Volcanology: Physics And Chemistry Of Magma Bodies
Scientific paper
Reanalysis of the Apollo 15 A, B, and C green glass beads from slide 15426,72, led to the discovery of patchy, highly vesicular glass rims adhering to beads. These rims are high in S and Ni and low in MgO, but otherwise compositionally similar to the green glasses. We find that these rims represent a unique melt composition that places constraints on lunar magmatic processes. Combining the compositional data for the vesicular glass rims with new minor element data for the green glass beads leads us to hypothesize that the vesicular rim fluid originated near the green glass source, at about 2.2 GPa. These findings support the theory of a heterogeneous lunar mantle, and suggest that sulfur did not drive the eruption from depth, but that degassing volatiles into the vacuum did drive the final fire fountain eruption.
Chatterjee Nilanjan
Elkins-Tanton Linda T.
Grove Timothy L.
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