AS17-2309(P) - Figure 81
                                                         Figure 74                                          Figure 81

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 Click here for larger NASA image of Figure 81
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This enlargement (right) provides a closeup view of part of the ridge. The fact that a fairly young impact crater (A) is deformed by the ridge and the generally fresh appearance of the ridge both suggest that it is fairly young. Within the valley, the ridge consists primarily of east-facing imbricate scarps, although west-facing lobate scarplets are also present. After crossing into the highlands (B), the ridge becomes a simple one-sided scarp resembling a fault scarp. If faulting was involved, movement was upward on the left side or, less probably, downward on the right. The Apollo 17 astronauts were unable to provide conclusive answers concerning the origin of the ridge owing to the thick cover of regolith and avalanche material. Photogeologic study indicates that part of the ridge may have formed by displacement along a fault or, less likely, by the upwelling of lava.    B.K.L.

Report Source: NASA SP-362, Page 91, Figure 81

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