Mechanics of lithospheric delamination in extensional settings.

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dc.contributor.advisorDunbar, John A., 1955-
dc.creatorJex, Jeffrey A., 1988-
dc.date.accessioned2015-05-22T15:18:41Z
dc.date.available2015-05-22T15:18:41Z
dc.date.created2015-05
dc.date.issued2015-03-23
dc.date.submittedMay 2015
dc.date.updated2015-05-22T15:18:41Z
dc.description.abstractDelamination, the foundering of the lower crust and sub-crustal lithosphere, is one of the most important geodynamic processes that is still poorly understood. Geodynamic modeling has constrained conditions and likely outcomes of delamination in orogenically-thickened crust. In this study, I do the same for delamination in extensional settings by using finite element models of young passive margins. Delamination in these models may occur as melt beneath oceanic crust intrudes between the lower continental crust and sub-crustal lithosphere, driven by buoyancy. When sufficient melt is available and the lower crust is weak, the melt wedges between the lower crust and sub-crustal lithosphere, initiating delamination of the sub-crustal lithosphere. The speed of delamination is strongly dependent on weakness of the lower crust followed by the amount of melt present.
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2104/9304
dc.language.isoen
dc.rights.accessrightsWorldwide access.
dc.subjectDelamination
dc.subjectGeodynamics
dc.subjectGeophysics
dc.subjectGeology
dc.subjectPlate tectonics
dc.subjectRifting
dc.subjectPassive margin
dc.subjectVolcanic margin
dc.subjectNumerical modeling
dc.subjectFinite element
dc.subjectUnderplating
dc.titleMechanics of lithospheric delamination in extensional settings.
dc.typeThesis
dc.type.materialtext
thesis.degree.departmentBaylor University. Dept. of Geology.
thesis.degree.grantorBaylor University
thesis.degree.levelMasters
thesis.degree.nameM.S.

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