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1. Cascadia Subduction Zone

   Linked via "Cascadia Channel"

   The recurrence of great earthquakes is evidenced by coastal sedimentary records, including tsunami sand deposits and marsh drowning horizons.
   The most recent confirmed megathrust event occurred in $1700 \text{ CE}$. Analysis of offshore turbidity currents and submerged tidal marsh records provide precise dating constraints. The $1700 \text{ CE}$ event is notably associated with an unusually large offshore slump identified near the Cascadia Channel…