“…A similar contrast between the external geometry of meanders and the architecture of related point bars has been highlighted for fluvial meanders (Russell et al ., 2019) through the analysis of their complex scroll‐bar patterns. Fluvial and tidal point bars are assumed to arise from a progressive increase in sinuosity of relatively straight channels (Leopold & Wolman, 1960; Daniel, 1971; Brice, 1974; Lewin, 1976; Nanson & Page, 1983; Knighton & Woodroffe, 1992; Hughes, 2012; Ghinassi et al ., 2014), although the planform patterns of newly‐formed channels are commonly irregular, being controlled by adaptation of the flow to local micro‐reliefs of the newly‐drained areas (Aslan & Blum, 1999; Taylor, 1999; Motta et al ., 2012; Cassiani et al ., 2020; Bellizia et al ., 2021). Although adaptation of the Holocene lagoon mud to the underlying alluvial lowstand topography (Castiglioni & Favero, 1987; Amorosi et al ., 2008) could have generated the micro‐relief required to trigger wandering of a newly‐formed channel, an avulsive relocation (Slingerland & Smith, 1998, 2004; Mohrig et al ., 2000) of the study channel is ruled out by the lack of a significant superelevation between sub‐tidal channels and surrounding overbanks.…”