| Title | Stratigraphic Evidence of Cascadia Earthquake Induced Relative Sea Level Change at Netarts Bay, Oregon |
| Publication Type | Thesis |
| Year of Publication | 2019 |
| Authors | Graham-Davis, Jazzy M. |
| Academic Department | Dept. of Geology |
| Degree | H.B.S. (Honors Bachelor of Science) |
| Pagination | 22 p. |
| University | Portland State University |
| City | Portland, Or. |
| Type of Work | Honors Bachelor of Science Thesis |
| Call Number | OSU Libraries: Digital Open Access |
| Keywords | Netarts Bay, Coastal hazards, Dendrochronology, Earthquakes, Geology, Paleosciences, Tsunamis |
| Notes | At low tide on the edge of Netarts Bay, buried trees can be seen. “120 meters inland from the bay front, incision into marsh exposures reveal buried trees protruding 1.43 meters below the marsh surface and extending from the 4th layer of buried marsh soils overlain by tsunami sands. I interpret this stratigraphic sequence as evidence for tectonic subsidence and abrupt paleotsunami inundation.” (from the Abstract) The author used carbon-14 dating to estimate that the forest sank due to subsidence at about 286-392 C.E. The author estimates that the ghost forest is evidence of the 5th major earthquake before the present. This thesis is archived at the PDX Scholar digital repository at Portland State University. |
| URL | https://doi.org/10.15760/honors.774 |
| DOI | 10.15760/honors.774 |
| Short Title | University Honors Theses. Paper 757 |
