Without scale it is hard to identify exactly what they is but they appear to be exposed bedding layers dipping at a high angle to the left side of the screen. Oh, and erosion happens on Mars so there wouldn't be much ancient anything there.
Much more interesting is this: http://geology.com/articles/racetrac...ng-rocks.shtml
Much more interesting is this: http://geology.com/articles/racetrac...ng-rocks.shtml
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