Where did the rock layers on the right side end up?

The rover is parked on a gentle slope as it climbs higher up Mt Sharp.

If you check the HazCam view, there is a float rock closer to the rover. I'm not a geologist, but I assume that this could be a possible candidate for part of the the missing outcrop that slid down slope after it broke off by being undermined.

From what I've read, the science team believe that these sedimentary rocks in Gale crater were fractured when several kilometers of overburden were eroded out of the crater. Here's a link to a short video (<3 minutes) from JPL https://youtu.be/Q-uAz82sH-E