Controls on Uplift Patterns in Raukumara Peninsula, New Zealand: Insights from DEM Modeling

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dc.contributor.advisorMorgan, Julia K
dc.creatorFarrell, William
dc.date.accessioned2019-05-17T16:50:12Z
dc.date.available2019-05-17T16:50:12Z
dc.date.created2018-12
dc.date.issued2018-11-28
dc.date.submittedDecember 2018
dc.date.updated2019-05-17T16:50:12Z
dc.description.abstractDiscrete element numerical simulations are used to understand how underplating, the subcretion of subducted sediments from the top of the downgoing plate to the bottom of the overriding plate, drives upper plate faulting and uplift patterns. Our simulations are modeled on processes occurring at Raukumara Peninsula, New Zealand, a location of proposed underplating. We also apply differential surface erosion, landsliding, and multiple versions of upper plate faulting, motivated by processes occurring on Raukumara Peninsula, to test how these factors affect the underplating system. We find that antiformal uplift generally occurs above an underplated body, accompanied by trenchward displacement outboard of the uplifting region. These two zones are separated by a normal fault, the location of which determines the relative amounts of uplift and horizontal trenchward displacement. Most of the tested factors in this system (landsliding, faulting, upper plate zones of weakness) have minimal effect on the form of uplift and overall system evolution. Differential surface erosion, however, shifts the zone of most rapid uplift towards the area with the greatest amount of erosion. This work suggests that, in the absence of a strong differential erosion forcing, antiformal uplift should be expected on Raukumara Peninsula but if differential erosion occurs, then asymmetrical uplift would be predicted. Both uplift patterns have been proposed by different workers there based on field measurements.
dc.format.mimetypeapplication/pdf
dc.identifier.citationFarrell, William. "Controls on Uplift Patterns in Raukumara Peninsula, New Zealand: Insights from DEM Modeling." (2018) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/105901">https://hdl.handle.net/1911/105901</a>.
dc.identifier.urihttps://hdl.handle.net/1911/105901
dc.language.isoeng
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.
dc.subjectRaukumara
dc.subjectDEM
dc.subjectDiscrete Element Method
dc.subjectUnderplating
dc.subjectSurface Processes
dc.titleControls on Uplift Patterns in Raukumara Peninsula, New Zealand: Insights from DEM Modeling
dc.typeThesis
dc.type.materialText
thesis.degree.departmentEarth Science
thesis.degree.disciplineNatural Sciences
thesis.degree.grantorRice University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science
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