The Evolution of the Galapagos Mantle Plume: From Large Igneous Province to Ocean Island Basalt

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dc.contributor.authorTrela, Jareken
dc.contributor.committeechairGazel, Estebanen
dc.contributor.committeememberCaddick, Mark J.en
dc.contributor.committeememberHerzberg, Claude T.en
dc.contributor.committeememberZhou, Yingen
dc.contributor.departmentGeosciencesen
dc.date.accessioned2017-04-22T08:00:48Zen
dc.date.available2017-04-22T08:00:48Zen
dc.date.issued2017-04-21en
dc.description.abstractMantle plumes are anomalously hot, narrow upwellings of mantle material that originate at the core-mantle boundary. As plumes rise they may form volumetrically large "heads" (~1000 km in diameter) with narrower (~100 km) "tails." Plume head melting is thought to form Large Igneous Provinces (LIPs), vast outpourings of basaltic lava (~106 km3), while plume tail melting forms linear chains of ocean island basalts (OIBs) similar the Emperor-Hawaii Seamount chain. Mantle plume derived melts indicate that these structures sample deep Earth geochemical and lithological heterogeneities. Studying plume-derived lavas can clarify important planetary-scale questions relating to the accretion of the Earth, primordial geochemical reservoirs, the fate of subducted materials, planetary differentiation, and convective mixing.en
dc.description.degreePh. D.en
dc.format.mediumETDen
dc.identifier.othervt_gsexam:10029en
dc.identifier.urihttp://hdl.handle.net/10919/77438en
dc.publisherVirginia Techen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectGeologyen
dc.subjectGeochemistryen
dc.subjectmantle plumesen
dc.subjectolivineen
dc.subjectthermometryen
dc.subjectpetrologyen
dc.subjecthotspotsen
dc.subjectisotopesen
dc.titleThe Evolution of the Galapagos Mantle Plume: From Large Igneous Province to Ocean Island Basalten
dc.typeDissertationen
thesis.degree.disciplineGeosciencesen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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