Partial Least Squares Modeling of Lunar Surface FeO Content with Clementine Ultraviolet-Visible Images - Planetary Exploration and Science: Recent Results and Advances - page 17

Fig. 1.12 ( a ) PLS-derived iron map of Tycho crater; ( b ) statistical result of iron distribution in
Tycho crater; ( c ) PLS-derived iron map of SPA region

explored the potential for all the five available Clementine UVVIS bands and some
more spectral parameter than Lucey et al. ( 2000 ), who used only Clementine's two
bands (950 and 750 nm) to derive iron content. We believe our PLS model is a good
test and validation for the lunar elemental mapping with available lunar spectral data
and those from future lunar missions.

1.6 Indication of Lunar Magma Ocean Hypothesis

After lunar sample returned to earth, a lot of laboratory experimental analyses have
been done to extract information of the lunar mineralogy and petrogenesis, which
are very helpful in understanding lunar origin and evolution progress in a global
or local scale. Samples from lunar highland regions contain higher plagioclase
abundance and hence are rich in Al and poor in Fe compared to those from mare
regions (Lucey et al. 1995 ). These rocks are interpreted as forming from a global
circling magma ocean, and plagioclase floated in it (Wood et al. 1970 ; Warren