Evidence for Phyllosilicates near the Lunar South Pole

Details Evidence for Phyllosilicates near the Lunar South Pole Evidence for Phyllosilicates near the Lunar South Pole

Jan 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998nvmi.conf...73v&link_type=abstract

Workshop on New Views of the Moon: Integrated Remotely Sensed, Geophysical, and Sample Datasets, p. 73

Physics

Ice, Silicates, Water, Lunar Composition, Lunar Environment, Lunar Exploration, Weathering, Solar Wind, Lunar Prospector, Polar Regions, Iron Oxides

Scientific paper

While theoretically water ice could be stable in permanently shadowed areas near the lunar poles, there is conflicting observational evidence for the existence of water ice at either pole. Clementine's bistatic radar resumed a weak signal commensurate with water ice in the South Pole Aitken Basin; however, groundbased radar searches have not detected such a signal at either pole. Lunar Prospector measured large amounts of H (attributed to water) at both poles; however, Galileo near-infrared spectral measurements of the north polar region did not detect the prominent 3.0 micron absorption feature due to interlayer and adsorbed water in phyllosilicates. Evidence for the existence of water at the lunar poles is still ambiguous and controversial. We present evidence, based on the analysis of Galileo SSI images, for the presence of phyllosilicates near the lunar south pole. Using the color image sequence (560 nm, 670 nm, 756 nm, and 889 nm) of Lunmap 14 taken during the Galileo Earth-Moon pass I, we have identified areas that show evidence for a 0.7 microns absorption feature present in Fe-bearing phyllosilicates.

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