note an alluviation
event in the Argive Plain in the later Neolithic, (21) while Zangger et al.
The erosion and alluviation
generated by over a millennium of earthmoving would have expanded the shoreline and formed highly productive wetlands long before the archaeological record indicates abandonment of the interior districts.
This climatic transition is manifested in paleoecological records by rising lake levels, dune stabilization, partial melting of permafrost in lowland sites, increased alluviation
and hillslope erosion, and accumulation of soil organics (peat).
In contrast, the Rio Maranon carries a substantial load of clayey sediment which results in a more fertile floodplain due to greater alluviation
compared to that of the Negro.