Late Holocene paleoenvironmental changes:

Pollen, benthic foraminifera, diatoms, sediment grain size, and organic matter content from a 230-cm long-AMS dated sediment core (Core SB-51B) were used to reconstruct paleoenvironmental changes and paleoclimatic evolution within the Seal Beach wetland (southern California, USA), during the last ~ 2000 years.

The analyzed sedimentary sequence indicated the possible occurrence of three seismic events during the Late Holocene: E3 and E2 before 1760  cal  years BP and E1, which took place just prior to 390  cal  years BP