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Filtering by: Creator Babb, D. Remove constraint Creator: Babb, D. Advisor Graham, David W. Remove constraint Advisor: Graham, David W.

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  • Geochemical and helium isotopic variability within the Lau Basin

    Creator:
    Goddard, Charlotte Ives
    Abstract:
    This research incorporates geochemical and helium isotopic analyses of Lau Basin volcanic glasses, along with helium isotopic analyses of water column hydrothermal plumes to better understand the processes that control the formation and evolution of this backarc basin. Lavas newly collected from the four southernmost segments of the Valu Fa...
    Resource Type:
    Dissertation
    Full Text:
    .............................................................................................................203 Appendix D

  • Basaltic volcanism and tectonics of the High Lava Plains, southeastern Oregon

    Creator:
    Jordan, Brennan T.
    Abstract:
    The High Lava Plains province (HLP) of southeastern Oregon is a Miocene to Recent volcanic upland characterized by widespread basaltic volcanism and west-migrating rhyolitic volcanism. New ⁴⁰Ar/³⁹Ar ages for HLP rhyolites demonstrate that the trend of migrating rhyolitic volcanism is robust, reflecting westward migration at a rate of -35 km/m.y....
    Resource Type:
    Dissertation
    Full Text:
    (BABB); however, HLP basalts have higher Ba and Sr concentrations and lower K/Ba than either MORB or