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Filtering by: Advisor Hawkes, Stephen J. Remove constraint Advisor: Hawkes, Stephen J. Academic Affiliation College of Oceanic and Atmospheric Sciences Remove constraint Academic Affiliation: College of Oceanic and Atmospheric Sciences

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  • Microbial alteration of the seafloor

    Creator:
    Josef, Jennifer A.
    Abstract:
    In the early 1980's the first evidence of biological alteration of basalt glass (sideromelane) was published. Since that time additional evidence, including DNA staining, isotopic abundance and chemical mapping, has come to light suggesting that this unique alteration of glass can be attributed to microbial activity. Microbial alteration textures have...
    Resource Type:
    Masters Thesis
    Full Text:
    the Seafloor. Abstract approved: Stephen Giovannoni In the early 1980's the first evidence of

  • Prokaryotes associated with marine crust

    Creator:
    Mason, Olivia Underwood
    Abstract:
    Oceanic crust covers nearly 70% of the Earth's surface, of which, the upper, sediment layer is estimated to harbor substantial microbial biomass. Marine crust; however, extends several kilometers beyond this surficial layer, and includes the basalt and gabbro layers. In particular, the basalt layer has high permeabilities which allows for...
    Resource Type:
    Dissertation
    Full Text:
    : _______________________________________________ Stephen J. Giovannoni Martin R. Fisk Oceanic crust covers nearly 70% of the