I believe the area of mosaic-like slabs, seeming to drape over the topography of the crater, is an illusion. They are probably a jumble of blocks, disrupted by the Endurance impact, that have been scoured down and streamlined by ceaseless wind erosion. The laminations seem to go in random orientations in each exposed stone, as would be expected in a chaotic pile.
The "landslide" areas stated by Bill Harris puzzle me too. They appear to be weathering out of the slope, where they form promontories, rather than sliding from above. They remind me of igneous intrusions weathering out of a hill or mountainside, though they likely aren't. The rock itself appears to be an indurated version of the laminated rock that is prevalent everywhere. I think they are either a bed of particularly large concretions or are areas of rock shocked by the Endurance impact (the same material that forms pedestal craters elsewhere?).