The western delta fan in Jezero crater hosts one of Mars’s best-preserved examples of fluvial accretion surfaces, recently investigated by NASA’s Perseverance Rover. Erosional windows reveal this geologic unit, which records evidence of fluvial point bar deposition. On Earth, accretion surfaces are used to reconstruct meander-belt evolution and paleoenvironments, but their use in Martian fluvial deposits is less explored. Here, we use orbital HiRISE and CTX datasets for a detailed, geometric planform characterisation of fluvial accretion surfaces on the western fan. Our analysis expands on Perseverance’s investigation as our study region extends significantly beyond where the rover visited. We identified significant exposures of accretion surfaces and analysed the various bedding geometries and their relationships, resulting from meander-bend migration patterns. The combination of meander bend patterns suggests evidence of toggling in an ancient meandering fluvial system. We also show these deposits are thicker than previously reported, occupying ~65m of stratigraphy, suggestive of a regionally extensive meandering fluvial system that existed on the delta plain. The close relationship of these deposits with inverted channels possibly suggests that the top of the fan represents a continuum of fluvial processes as opposed to end-members in delta stratigraphy. Finally, we investigate the consistent accretion direction of the deposits towards the east and propose a model to explain this with stronger paleoflow influence from the northern inlet during the early stages of the development of Jezero Western Fan. Overall, this study provides a detailed orbitally-derived characterisation of a key sampling unit for Mars Sample Return.