Figure 86

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In this picture we see another example of the close relationship between mare ridges and faults. The area is in the Montes Riphaeus between Mare Cognitum and Oceanus Procellarum. A small part of Oceanus Procellarum is shown in the upper left. A mare ridge (MR) extends across Procellarum to the edge of the Montes Riphaeus. In all visible respects it is typical of a great many other mare ridges. Across the Montes Riphaeus (arrow to arrow) the trend of the ridge becomes a fault or series of faults causing the valley. Narrower valleys or grooves in the lower part of the picture are parallel to the larger valley and they too probably originated by faulting. Near the east edge of the picture the Montes Riphaeus are bounded by mare (M). Parts of the contact are quite angular (heavy lines), suggesting a series of offset faults, possibly continuations of the main mare ridge-fault trend.   -G.W.C.

Report Source: NASA SP-362, Page 95, Figure 86

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