Figure 28

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A comparable view of the opposite (west) side of Mare Serenitatis taken only a few minutes after figure 27 during the same revolution. Now closer to the terminator, the smaller angle between the Sun's rays and the lunar surface causes an enhancement of topographic relief. Mare ridges appear to be higher and rilles or grabens deeper than on the east side. In both areas the ridges and rilles are grossly parallel to the edge of the mare. Rimae Sulpicius Gallus, the prominent rilles in the lower part of the picture, and the dark plateau into which they are cut are embayed by the younger mare plains. Some of the mare ridges, especially the sharper crested ones, may be younger than the bulk of the mare plains. All of these features are younger than the rugged Apennine Mountains (left) and the Caucasus Mountains (center of the horizon). The two mountain ranges form part of the rim of both the Serenitatis basin and the Imbrium basin (to the left of the ranges).  -D.E.W

Report Source: NASA SP-362, Page 41, Figure 28

This web page was created by Francis Ridge for The Lunascan Project
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