Glass Jennifer B.

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Glass
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Jennifer B.
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  • Article
    Submarine volcanic morphology of the western Galapagos based on EM300 bathymetry and MR1 side-scan sonar
    (American Geophysical Union, 2007-03-21) Glass, Jennifer B. ; Fornari, Daniel J. ; Hall, Hillary F. ; Cougan, Allison A. ; Berkenbosch, Heidi A. ; Holmes, Mark L. ; White, Scott M. ; De La Torre, Giorgio
    A compilation of high-resolution EM300 multibeam bathymetric and existing MR1 side-scan sonar data was used to investigate the volcanic morphology of the flanks of the western Galápagos Islands. The data portray an assortment of constructional volcanic features on the shallow to deep submarine flanks of Fernandina, Isabela, and Santiago Islands, including rift zones and groups of cones that are considered to be the primary elements in constructing the archipelagic apron. Ten submarine rift zones were mapped, ranging in length from 5 to 20 km, comparable in length to western Canary Island rift zones but significantly shorter than Hawaiian submarine rift zones. A detailed analysis of the northwestern Fernandina submarine rift, including calculated magnetization from a surface-towed magnetic study, suggests that the most recent volcanism has focused at the shallow end of the rift. Small submarine volcanic cones with various morphologies (e.g., pointed, cratered, and occasionally breached) are common in the submarine western Galápagos both on rift zones and on the island flanks where no rifts are present. At depths greater than ∼3000 m, large lava flow fields in regions of low bathymetric relief have been previously identified as a common seafloor feature in the western Galápagos by Geist et al. (2006); however, their source(s) remained enigmatic. The new EM300 data show that a number of the deep lava flows originate from small cones along the mid-lower portion of the NW submarine rift of Fernandina, suggesting that the deep flows owe their origin, at least in part, to submarine rift zone volcanism.
  • Article
    Hydrogenation reactions of carbon on Earth: linking methane, margarine, and life
    (GeoScienceWorld, 2020-05-01) McGlynn, Shawn E. ; Glass, Jennifer B. ; Johnson-Finn, Kristin ; Klein, Frieder ; Sanden, Sebastian A. ; Schrenk, Matthew O. ; Ueno, Yuichiro ; Vitale-Brovarone, Alberto
    Hydrogenation reactions are a major route of electron and proton flow on Earth. Interfacing geology and organic chemistry, hydrogenations occupy pivotal points in the Earth’s global geochemical cycles. Some examples of hydrogenation reactions on Earth today include the production and consumption of methane in both abiotic and biotic reactions, the reduction of protons in hydrothermal settings, and the biological synthesis and degradation of fatty acids. Hydrogenation reactions were likely important for prebiotic chemistry on the early Earth, and today serve as one of the fundamental reaction classes that enable cellular life to construct biomolecules. An understanding and awareness of hydrogenation reactions is helpful for comprehending the larger web of molecular and material inter-conversions on our planet. In this brief review we detail some important hydrogenation and dehydrogenation reactions as they relate to geology, biology, industry, and atmospheric chemistry. Such reactions have implications ranging from the suite of reactions on early Earth to industrial applications like the production of hydrocarbon fuel.
  • Dataset
    Depth-binned CTD casts from Pelican PE17-02 on the Louisiana Shelf, Gulf of Mexico in July-August 2016 (Methane cycling in OMZs project)
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2021-02-24) Stewart, Frank James ; Glass, Jennifer B.
    Depth-binned CTD casts from Pelican PE17-02 on the Louisiana Shelf, Gulf of Mexico in July-August 2016. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/679374
  • Dataset
    Time-binned CTD casts from R/V Pelican PE17-02 in the Louisiana Shelf, Gulf of Mexico from July to August 2016 (Methane cycling in OMZs project)
    (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2021-02-24) Stewart, Frank James ; Glass, Jennifer B.
    Time-binned CTD casts from R/V Pelican PE17-02 in the Louisiana Shelf, Gulf of Mexico from July to August 2016. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/682613