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Filtering by: Committee Member Koppers, Anthony Remove constraint Committee Member: Koppers, Anthony Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

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  • Helium isotope variations in peridotite, gabbro and basalt from the Kane Oceanic Core Complex

    Creator:
    Konrad, Kevin
    Abstract:
    The Kane Oceanic Core Complex (OCC) is a valuable window into crustal architecture and chemical composition of the lithosphere beneath a slow-spreading ocean ridge. A suite of > 30 samples (comprised of whole rocks, mineral separates and basalt glasses) has been analyzed for ³He/⁴He isotope ratios and He concentrations. Gas...
    Resource Type:
    Masters Thesis

  • Application of Cosmogenic Nuclides and Argon Geochronology to Paleoclimate, Paleomagnetism, and Paleohydrology

    Creator:
    Balbas, Andrea M.
    Abstract:
    This dissertation uses argon geochronology and cosmogenic nuclide surface exposure dating methods to address three research questions. The first question concerns a geomagnetic instability recorded in lava flows on the island of Floreana in the Galapagos Archipelago. Changes in the Earth’s magnetic field (intensity and orientation) occur frequently throughout geologic...
    Resource Type:
    Dissertation
    Full Text:
    Anthony, I bet you wish you ran long and fast at first sight of me. I don’t blame you. At every turn, I

  • The marine geomorphology of American Samoa : shapes and distributions of deep sea volcanics

    Creator:
    Roberts, Jed T.
    Abstract:
    The geologic processes at work in American Samoa have long been a point of scientific debate. Of its numerous volcanic formations, few breach sea level, leaving an enormous proportion of their mass unavailable to traditional observation. This study aims to describe the deep sea geomorphology of American Samoa through compilation,...
    Resource Type:
    Masters Thesis
    Full Text:
    .  I am grateful for  the expertise shared by Anthony Koppers with regard to his work  in Samoa, for

  • Volatile mobility of trace metals in volcanic systems

    Creator:
    Loewen, Matthew W.
    Abstract:
    Semi-volatile trace metals like Li, Cu, Mo, Sn, In, and Pb have the potential to track mobility of a volatile phase in volcanic systems. In this dissertation four studies are presented that either directly investigate or are motivated by observations of trace metal behavior in volcanic systems. A common tool...
    Resource Type:
    Dissertation
    Full Text:
    , Frank Tepley, and Anthony Koppers as well as late substitutes for my defense Anita Grunder and Dave