Holocene Evolution of the Southern Washington and Northern Oregon Shelf and Coast: Geologic Discussion and GIS Data Release

Fig.1:Location map Fig.2:Summary of data sources Fig.3:Sea level curve Fig.4:Example seismic profile Fig.5:Core log indicating surfaces Fig.6:Lowstand surface Fig.7:Ravinement and flooding surface Fig.8:Present day surface Fig.9:Series of maps showing coastal evolution Fig.10:Seismic profile showing smooth ravinement surface Fig.11:Seismic profile showing dipping reflectors Fig.12:Distribution and thickness of bay and fluvial deposits Fig.13:Distribution and thickness of Holocene aged sediment Fig.14:Distribution of sediment volume Fig.15:Bathymetry comparison Fig.16:Surface calculations pre-progradation Fig.17:10,000 yr BP surface Fig.18:Surface calculations post-progradation Fig.19:2,000 yr BP surface