PORTLAND, Ore. (KOIN) – January 26 marked the 325th anniversary since the last earthquake struck the Cascadia Subduction Zone. Centuries later, the ancient quake has left clues for scientists to ...

smaller 2.4 earthquake earlier that morning in the Cascadia Fold off the coast. Slight tremors could be felt on the mainland, ...

Earthquake experts say current building codes don’t reflect the riskiest features of the Seattle area’s geology — but the outlook for survivability looks a lot better if the Really Big ...

Dashed lines indicate the position of interpreted faults. Dotted lines indicate fold axes. Question marks indicate positions where the existence of structures is uncertain. The position of the high ...

January 26 marked the 325th anniversary since the last earthquake struck the Cascadia Subduction Zone. Centuries later, the ancient quake has left clues for scientists to prepare for the next one.

Figure 1: Slip along the plate boundary fault of a subduction zone. Although a recent analysis of NVT in Cascadia supports its origin at the plate boundary interface, (K. Creager, Univ.

The Cascadia subduction zone ... Humboldt County is unique because many of these folds and faults are exposed on land. Big Lagoon and Arcata Bay are synclines, gentle folds where the center ...