Index Catalog // ScholarsArchive@OSU

Creator:: Hall, L. S., Mahoney, J. J., Sinton, J. M., and Duncan, Robert A.
Abstract:: Lavas of the Rano Rahi seamount field define a Nd-Pb-Sr isotopic array that connects, and substantially overlaps, the arrays of the nearby East Pacific Rise axis and 5.6–28 Ma lavas of the Pukapuka ridge system, situated between the seamount field and French Polynesia. Dating of Rano Rahi samples by ⁴⁰Ar-³⁹Ar...
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Full Text:: asthenospheric component in the Rano Rahi Seamount Field, East Pacific Rise, 15�–19�S L. S. Hall, J. J. Mahoney

Creator:: McCanta, Molly C., Hatfield, Robert G., Thomson, Bradley J., Hook, Simon J., and Fisher, Elizabeth
Abstract:: Understanding the frequency, magnitude, and nature of explosive volcanic eruptions is essential for hazard planning and risk mitigation. Terrestrial stratigraphic tephra records can be patchy and incomplete due to subsequent erosion and burial processes. In contrast, the marine sedimentary record commonly preserves a more complete historical record of volcanic activity...
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Full Text:: . Hatfield2, Bradley J. Thomson3, Simon J. Hook4, and Elizabeth Fisher1 1Department of Earth and Ocean

Creator:: Broadley, Michael W., Sumino, Hirochika, Graham, David W., Burgess, Ray, and Ballentine, Chris J.
Abstract:: Halogens are primarily located within surface reservoirs of the Earth; as such they have proven to be effective tracers for the identification of subducted volatiles within the mantle. Subducting lithologies exhibit a wide variety of halogen compositions, yet the mantle maintains a fairly uniform signature, suggesting halogens may be homogenized...
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Full Text:: , David W. Graham4, Ray Burgess1, and Chris J. Ballentine5 1School of Earth and Environmental Sciences

Creator:: Manga, Michael, Hornbach, Matthew J., Le Friant, Anne, Ishizuka, Osamu, Stroncik, Nicole, Adachi, Tatsuya, Aljahdali, Mohammed, Boudon, Georges, Breitkreuz, Christoph, Fraass, Andrew, Fujinawa, Akihiko, Hatfield, Robert, Jutzeler, Martin, Kataoka, Kyoko, Lafuerza, Sara, Maeno, Fukashi, Martinez-Colon, Michael, McCanta, Molly, Morgan, Sally, Palmer, Martin R., Saito, Takeshi, Slagle, Angela, Stinton, Adam J., Subramanyam, K. S. V., Tamura, Yoshihiko, Talling, Peter J., Villemant, Benoit, Wall-Palmer, Deborah, and Wang, Fei
Abstract:: Using temperature gradients measured in 10 holes at 6 sites, we generate the first high fidelity heat flow measurements from Integrated Ocean Drilling Program drill holes across the northern and central Lesser Antilles arc and back arc Grenada basin. The implied heat flow, after correcting for bathymetry and sedimentation effects,...
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Full Text:: @seismo.berkeley.edu) Matthew J. Hornbach Department of Earth Sciences, Southern Methodist University, Dallas, Texas

Creator:: Geprägs, Patrizia, Torres, Marta E., Mau, Susan, Kasten, Sabine, Römer, Miriam, and Bohrmann, Gerhard
Abstract:: Recent studies have suggested that the marine contribution of methane from shallow regions and melting marine-terminating glaciers may have been underestimated. Here we report on methane sources and potential sinks associated with methane seeps in Cumberland Bay, South Georgia's largest fjord system. The average organic carbon content in the upper...
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Full Text:: latitudes where the effects of climate change are amplified [Walter et al., 2006; Archer et al., 2009

Creator:: Hecker, Christoph, Dilles, John H., van der Meijde, Mark, and van der Meer, Freek D.
Abstract:: In this paper, we present an approach to extracting mineralogic information from thermal infrared (TIR) spectra that is not based on an input library of pure mineral spectra nor tries to extract spectral end-members from the data. Instead, existing modal mineralogy for a number of samples are used to build...
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Full Text:: ; Accepted 8 February 2012; Published 24 March 2012. Hecker, C., J. H. Dilles, M. van der Meijde, and F. D

Creator:: Koppers. Anthony A. P., Staudigel, Hubert, Morgan, Jason Phipps, and Dunca, Robert A.
Abstract:: Over the last three decades the first-order correlation in morphology and orientation of seamount trails has been called upon to support the concept of a ‘‘fixed’’ Pacific hot spot frame of reference and to explain the Hawaii-Emperor bend (HEB) by a dramatic change in Pacific plate motion. In this paper,...
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Full Text:: , J. Phipps Morgan, and R. A. Duncan (2007), Nonlinear 40Ar/39Ar age systematics along the Gilbert

Creator:: Koppers, Anthony A. P., Duncan, Robert A., and Steinberger, Bernhard
Abstract:: The Louisville seamount trail has been recognized as one of the key examples of hot spot volcanism, comparable to the classic volcanic Hawaiian-Emperor lineaments. The published total fusion ⁴⁰Ar/³⁹Ar data of Watts et al. [1988] showed an astonishing linear age progression, firmly establishing Louisville as a fixed hot spot in...
Resource Type:: Article
Full Text:: , J. A. Tarduno, D. Scholl, and T. Davies 1. Introduction [2] The Louisville seamount trail (Figure

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