rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    non sort: The
    title: transport of heavy metals by the Mississippi River and their fate in the Gulf of Mexico
  name:
    name part: Trefry, John Harold.
    role:
      role term: creator
  name:
    name part: Presley, B. J.
    role:
      role term: degree supervisor.
  name:
    name part: Giam, C. S.
    role:
      role term: degree committee member.
  name:
    name part: Schink, D.
    role:
      role term: degree committee member.
  name:
    name part: Scott, B.
    role:
      role term: degree committee member.
  name:
    name part: Scott, M.
    role:
      role term: degree committee member.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  genre: Academic theses.
  origin info:
    place:
      place term: txu
    date issued: 1977
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: xiii, 223 leaves : illustrations, graphs, maps ; 28 cm
  abstract: Significant differences in total and leachable concentration of some metals were observed between Mississippi River suspended matter and Gulf of Mexico sediments. These variations are related to diversity in Gulf sediment redox conditions, accumulation rates and grain-size distribution. Suspended particulates transport >90% of the Mississippi River metal load. Hydrous oxides and aluminosilicate lattices are the primary phases of particulate metal transport. In general, total and leachable metal concentrations in river suspended matter are seasonally and spatially uniform. During low river flow, an eight-fold increase in the organic content of the suspended matter brought about a decrease in particulate Fe and Al values and a marked increase in Mn, Zn, Cu and Cd concentrations. Average SIO2, Al2O3 and K2O concentrations in Mississippi River particulates are similar to crustal abundances. Particulate Na2O, CaO and MgO values are 60-80% below crustal levels; however a high river dissolved load of these elements offsets the low particulate levels. No significant change in the total or leachable heavy metal concentrations of river suspended matter was found across the freshwater-seawater interface.
  note: by John Harold Trefry, III.
  note: Vita.
  note: "Major subject: Oceanography."
  note: Texas A & M University
  note: Includes bibliographical references (leaves 171-183).
  subject:
    geographic code: n-usm--
    geographic code: nm-----
  subject:
    topic: Heavy metals
  subject:
    topic: Sediment transport
    geographic: Mississippi River
  subject:
    topic: Marine sediments
    geographic: Mexico, Gulf of
  subject:
    topic: Heavy metals
  subject:
    topic: Marine sediments
  subject:
    topic: Sediment transport
  subject:
    geographic: Gulf of Mexico
  subject:
    geographic: Mississippi River
  subject:
    topic: Major oceanography
  classification: QH545.H43 T74 1977
  identifier: http://hdl.handle.net/1969.1/Dissertations-365726
  identifier: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: http://hdl.handle.net/1969.1/Dissertations-365726
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  record info:
    record content source: TXA
    record creation date: 771209
    record change date: 20210125085024.0
    record identifier: in00000354808
    language of cataloging:
      language term: eng