AS16-4970(P)

Figure 87

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This crenulate lobate scarp occurs within a small depression on the far side. It is not related to any obvious crater source, although it is similar to lobate flow fronts within the ejecta blankets of some young impact craters. Although it resembles some mare ridges, it is clearly confined to highlands terrane. Small scarps of this kind- unrelated to any apparent source of material or to any detectable tectonic control-are widely scattered in the highlands; their origin remains enigmatic. Mass wasting along a fault scarp might have produced the lobate configuration. A flow of locally derived surficial debris is also a plausible explanation; in this case, such a flow might have been triggered by small impacts on a ridge to the northwest.   -C.A.H.