Pediment Surface on Mars?
And now for some armchair speculation of Martian geomorphology based on two minutes of looking at a photo. Why not, right? The photo above was taken by the Curiosity rover and nicely shows the stratigraphy at the base of Mount Sharp. Very nice.
Upon closer examination it appears some layers are truncated by an erosional surface that parallels the sloping mountain front. The photos below are zoomed in and cropped to highlight one such area. The lower photo includes some simple annotation showing that truncation relationship (yellow line).
I didn’t have time to find a good Earth analog, but I’ve definitely seen erosional features like this, termed pediments, out in the deserts of Utah. Perhaps this is old news for those who study Mars, I don’t know. I just thought it was interesting. Besides, Mars!!
Those who know much more about Mars and/or desert landforms, please feel free to add info in the comments below.