High-resolution seismic and core data from the central part of the
Venice Lagoon reveal that the Holocene succession is composed
of three seismic units (H1–H3) bounded at the base by stratal surfaces
(S1–S3) and deposited in a back-barrier setting. Surfaces
S1, S2, and S3 record main shifts in the lagoon hydrodynamics,
reflected by marked changes of the tidal channel network across
any surface, that have been triggered by both large-scale factors
related to the Holocene sea-level rise and local factors in part due
to the human impact. In particular, the correlation of present data
with those from neighboring areas has allowed to relate Unit H1
to the TST of the Holocene sequence, and Units H2 and H3 to the
HST.