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Recent sandy deposits at five northern California coastal wetlands — Stratigraphy, diatoms, and implications for storm and tsunami hazards

December 11, 2019

A recent geological record of inundation by tsunamis or storm surges is evidenced by deposits found within the first few meters of the modern surface at five wetlands on the northern California coast. The study sites include three locations in the Crescent City area (Marhoffer Creek marsh, Elk Creek wetland, and Sand Mine marsh), O’rekw marsh in the lower Redwood Creek alluvial valley, and Pillar Point marsh at the northern end of Half Moon Bay.

Citation Information

Publication Year 2019
Title Recent sandy deposits at five northern California coastal wetlands — Stratigraphy, diatoms, and implications for storm and tsunami hazards
DOI 10.3133/sir20185111
Authors Eileen Hemphill-Haley, Harvey M. Kelsey, Nicholas Graehl, Michael Casso, Dylan Caldwell, Casey Loofbourrow, Michelle Robinson, Jessica Vermeer, Edward Southwick
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Scientific Investigations Report
Series Number 2018-5111
Index ID sir20185111
Record Source USGS Publications Warehouse
USGS Organization Pacific Coastal and Marine Science Center