Browsing by Subject "Mid-ocean ridges"

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Effects of off-axis melt supply at fast-spreading mid-ocean ridges: A study of the 9-10n region of the East Pacific Rise

Durant, Douglas Troy, 1965- (University of Oregon, 2011-06)

Results from a recent mid-ocean ridge tomography study along the fast-spreading, northern East Pacific Rise (EPR) reveal that the axis of mantle upwelling beneath the ridge is skewed with respect to the spreading axis, ...
Mantle flow and melting beneath young oceanic lithosphere: Seismic studies of the Galápagos Archipelago and the Juan de Fuca Plate

Byrnes, Joseph (University of Oregon, 2017-09-06)

In this dissertation, I use seismic imaging techniques to constrain the physical state of the upper mantle beneath regions of young oceanic lithosphere. Mantle convection is investigated beneath the Galápagos Archipelago ...
New Perspectives on Mid-Ocean Ridge Magmatic Systems and Deformation in the Uppermost Oceanic Mantle from Active- and Passive-Source Seismic Imaging in Cascadia

VanderBeek, Brandon (University of Oregon, 2019-01-11)

In this dissertation, I use seismic imaging methods to constrain the evolution of the oceanic upper mantle across the Juan de Fuca (JdF) and Gorda plates. This work begins by studying the geometry of the mantle magmatic ...
Novel Insights into Mass and Energy Transfer and Mid-Ocean Ridges from Seismic Imaging of the East Pacific Rise and Juan de Fuca Ridge

Arnoux, Gillean (University of Oregon, 2019-04-30)

In this dissertation, I use seismic imaging and waveform modeling methods to investigate melt migration processes and the structure of the magma plumbing system beneath the East Pacific Rise (EPR) and Endeavour segment of ...