Search Constraints

You searched for: Subject Geological Sciences Remove constraint Subject: Geological Sciences

Search Results

  1. Investigation of Phosphorus Cycle Dynamics Associated With Organic Carbon Burial in Modern (North Pacific) and Ancient (Devonian and Cretaceous) Marine Systems; Strengths and Limitations of Sequentially Extracted (SEDEX) Phosphorus Data

    4b29b6121?file=thumbnail
    Description: Periods of time characterized by widespread accumulation of organic carbon (Corg) -rich deposits have been interpreted to form as a result of increased rates of marine primary production and oxygen-deficient conditions in bottom and pore waters. Yet, debates persist regarding the source of nutrients (in particular phosphorus (P)) to marine...
    Keyword: Geology
    Subject: Geological Sciences
    Creator: Jason A Flaum
    Owner: Scholarly Digital Publishing
    Date Uploaded: 09/14/2018
    Date Modified: 09/14/2018
    Date Created: 2008-10-15
    Rights: In Copyright
    Resource Type: Dissertation
  2. Studies on the S-velocity Structure of the North American Upper Mantle

    6m311p49n?file=thumbnail
    Description: Several surface wave tomographic studies of the upper mantle structure beneath North America are presented, which take advantage of high quality seismic data, primarily recorded in the last decade, to create better resolved S-wave tomographic models. The first study presents a regional 3D model, IL05, of the upper mantle beneath...
    Keyword: Geology
    Subject: Geological Sciences
    Creator: Heather Bedle
    Owner: Scholarly Digital Publishing
    Date Uploaded: 09/13/2018
    Date Modified: 09/13/2018
    Date Created: 2008-10-07
    Rights: In Copyright
    Resource Type: Dissertation
  3. Chemical Weathering: Theoretical Models, Field Study in the Yellow River Basin, and Laboratory Study of Microbially-Mediated Basalt and Granite Weathering

    1j92g7626?file=thumbnail
    Description: Consumption of CO2 by chemical weathering is one of the major fluxes in the global carbon cycle that drives long-term climate. In an effort to understand silicate weathering, which is a net sink of CO2 over geological time scales, as a function of environment (e.g., exposure of parent rocks, climate,...
    Keyword: Geological Sciences
    Subject: Geological Sciences
    Creator: Lingling Wu
    Owner: Scholarly Digital Publishing
    Date Uploaded: 09/06/2018
    Date Modified: 09/06/2018
    Date Created: 2007-12-20
    Rights: In Copyright
  4. Continental Weathering Products: Clay Mineral Surfaces as Sinks for Organic Carbon in Marine Environments; Chemistry and Petrography of Bed Sediments from Large Rivers --Provenance and Chemical Weathering

    Wh246s29f?file=thumbnail
    Description: Continental weathering and organic carbon (OC) burial in marine sediments are important processes because they act as sinks for atmospheric carbon dioxide. Continental weathering products provide information about provenance, marine sediment quality/quantity, denudation and continental crust composition. In this study I explore two topics that impact some of these issues...
    Keyword: Petrology, Red River, Eastern Tibetan Plateau, Weathering, Provenance, and Mineral Surface Area
    Subject: Geological Sciences
    Creator: Joniell B Borges
    Owner: Scholarly Digital Publishing
    Date Uploaded: 08/28/2018
    Date Modified: 08/28/2018
    Date Created: 2007-10-19
    Rights: In Copyright
    Resource Type: Dissertation