Layered Deposits in Ritchey Crater (edm - possible True Colors; credits: Lunar Explorer Italia)

This cutout from the top center part of the context image shows this stack.
The dark unit is thin and breaking into boulders. The light material is actually divided into smaller layers, and is pervasively fractured. However, the boulders falling from the edge are mostly small and rarely remain intact if they move more than a few meters.
The cracking of the layer could be due to water loss from the layer, or to regional tectonic effects such as stresses from burial and erosion.
The base unit is partially covered by wind-blown ripples.