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Filtering by: Creator Jager, Matthew J. Degree Name Master of Science (M.S.) Subject Cascadia Subduction Zone

Seismicity at the Cascadia plate boundary beneath the Oregon continental shelf

Creator:

Williams, Mark Charles

Abstract:

Since 2003, 39 small earthquakes have been detected offshore central Oregon in the nominally locked part of the Cascadia subduction zone, where very little seis- mic activity has been recorded in spite of a paleo-seismic record of great subduction events. Although the regional earthquake bulletin reports depths of 29 and...

Resource Type:

Masters Thesis

Full Text:

my parents, Donald and Anne, my siblings, Christina, Janet, and Matthew, and the rest of my family
Exploring Volcano-Tectonic Connections in Cascadia – Temporal Linkages between Tephra Deposition and Megathrust Earthquakes

Creator:

Gutierrez, Joel C.

Abstract:

Explosively erupting volcanoes and megathrust earthquakes (Mw 8+ magnitude) occur at subduction zones and adjacent volcanic arcs. Volcanic eruptions are observed occurring close in time to megathrust earthquakes in the historical record from at least the 18th century CE to present in locations globally, including Japan in 1707 CE (Chesley...

Resource Type:

Masters Thesis
Evolution and inheritance of Cascadia sub-arc mantle reservoirs

Creator:

Bromley, Sarah Ashley

Abstract:

Inheritance from pre-existing mantle domains and fluid and melt contributions from active subduction together produce the geochemical signatures of mantle-derived arc basalts. In this context, this work evaluates the evolution of Cascadia mantle sources by documenting the isotopic and compositional characteristics of primitive basalts along a transect across the Eocene-Oligocene...

Resource Type:

Masters Thesis