In this context, the surfaces A0eA3 may represent the remnants of “alluvial” deposition adjusted to successively lower lake stands, but so far no field data are available to
confirm this interpretation. Morphologically, Unit 2 builds up a pebbly to gravelly, and cliffed platform at ~3 m (Unit 2a) to ~4 m (Unit 2b) AHD, ~3mabove the modern lake floor. This implies postdepositional and possibly wave-driven erosion during successively lower lake levels in the mid-to late Holocene.