| Title | Stratigraphic and microfossil evidence for a 4500-year history of Cascadia subduction zone earthquakes and tsunamis at Yaquina River estuary, Oregon, USA |
| Publication Type | Journal Article |
| Year of Publication | 2015 |
| Authors | Graehl, Nicholas A., Harvey M. Kelsey, Robert C. Witter, Eileen Hemphill-Haley, and Simon E. Engelhart |
| Secondary Title | Geological Society of America Bulletin, |
| Volume | 127 |
| Number | 1-2 |
| Pagination | p.211-226 |
| Call Number | OSU Libraries: Electronic Subscription |
| Keywords | Alsea Bay, Cannon Beach, coastal hazards, Coos Bay, Coquille River, earthquakes, geology, Netarts Bay, paleosciences, Sally’s Bend, Salmon River, sediments, Sixes River, South Slough, tsunamis, Yaquina Bay, Yaquina River Estuary |
| Notes | There’s a freshwater spruce swamp buried near the northeastern shore of Sally’s Bend in Yaquina Bay. Sediment cores show 8-10 different soil sequences buried there, going back about 4500 years before the present. Each sequence terminates abruptly with a sandy deposit and then over 10 centimeters of mud. The authors of this paper infer that “each buried soil represents a Cascadia subduction zone earthquake…” (from the Abstract) The article includes maps of the bay, and show locations of previous research by other scientists. The Yaquina Bay sequence is compared with sequences from other Oregon estuaries. |
| DOI | 10.1130/B31074.1 |
| Series Title | Geological Society of America Bulletin, |
