Figure 197

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A number of mare related features are present in this oblique view looking north across a mare surface between Mare Imbrium and Oceanus Procellarum. A broad mare arch is visible in the foreground. As it is followed toward the northwest the arch gives way to a series of small ridges, which then converge on an unusual sinuous chain of craters, elongate ridges, and elongate depressions. This sinuous chain leads into a large arcuate elongate depression at the boundary between the highlands and the mare. Similarity of parts of this structure to parts of some sinuous rilles, for example, Rima Hadley, suggests that its strange morphology may be a poorly understood variation of a lava channel, possibly a partially collapsed lava tube.   -J.W.H.

Report Source: NASA SP-362, Page 189, Figure 197

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