has been imaged by the Perseverance rover in the distant outcrops that mark the delta front in Jezero Crater on Mars. This is a clear indication of prograding (advancing) sedimentary deposits in water!
NASA's Mars Perseverance rover acquired these images using the SuperCam Remote Micro-Imager, located at the top of the rover's mast, on 24 April 2021 (Sol 63).
Diagram illustrating bedding relationships in a prograding Gilbert delta (from researchgate.net).