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Fig. 2.7
High-Ti ( a )andlow-Ti( b ) basalts distribution map of Lacus Veris
The concentration of the CPX is 15 % in the Lacus Veris basaltic terrain. In
some places, it exceeds up to 21 %. This is almost similar with the high-Ti basaltic
chemistry of the RELAB sample no. 71501-35 in the grain size of 20-45 m. Like
previous test sites, the Lacus Veris also does not have much amount of OPX. The
plagioclase content of this region is comparatively lesser than the Mare Orientale
and Lacus Autumni. The plagioclase and olivine content in the Lacus Veries basaltic
region is around 12 % and 2.5 % respectively. The olivine distribution is observed
only in the small areas of the Lacus Veries basaltic region. The concentration of the
olivine is in and around 2.5 % in the Lacus Veris region. That is also presented in
small areas and not distributed in the all basaltic region.
2.4.3
Lacus Autumni
The high-Ti basaltic concentration of Lacus Autumni region is shown in Fig. 2.8a .
The Lacus Autumni consists of only 10 % of the high-Ti basalts, however in some
specific regions, the content of the high-Ti basalts is increased up to 80 %, which
is marked in magenta color shown in the Fig. 2.8a . Low-Ti basalts concentrated in
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