Harvey M. Kelsey Nicholas Graehl Michael Casso Dylan Caldwell Casey Loofbourrow Michelle Robinson Jessica Vermeer Edward Southwick Eileen Hemphill-Haley 2019 <p>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.<br></p> application/pdf 10.3133/sir20185111 en U.S. Geological Survey Recent sandy deposits at five northern California coastal wetlands — Stratigraphy, diatoms, and implications for storm and tsunami hazards reports