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Dissolved oxygen and nutrient distributions in interstitial waters of abyssal marine sediments early diagenesis in manganese nodule localities from the eastern equatorial Pacific Ocean /Setlock, George Herman. January 1979 (has links)
Thesis--University of Wisconsin--Madison. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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Mining and pipeline transport of manganese nodulesBek-Derna, A. January 1981 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1981. / Typescript. Includes bibliographical references (leaves 105-111).
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Microchemical and textural studies of selected manganese nodules from a siliceous ooze site in the northeast equatorial PacificOlson, Dan E. January 1979 (has links)
Thesis (M.S.)--University of Wisconsin--Madison. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 147-155).
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Transition metal and rare earth element fluxes at two sites in the eastern tropical Pacific : relationship to ferromanganese nodule genesisMurphy, Kim Marie 28 June 1984 (has links)
Transition metal and rare earth element (REE) data are presented
for various sedimentary materials from two Manganese Nodule
Program (MANOP) sites in the eastern tropical Pacific. These data
constrain the sources of elemental supply to the seafloor and the
processes that control ferromanganese nodule genesis. Investigation
of elemental partitioning between suspended particles, sediments,
ferromanganese nodules, crusts, and micronodules indicates that
particle settling dominates REE supply to the seafloor at MANOP site
H. Partitioning of the particle flux reveals that although detrital
and labile particles both convey REE to H sediments and nodules,
labile biogenic debris is the primary source of REE accreted by site
H nodules.
Evidence from REE abundance patterns and correlations of REE
with other elements define three basic processes of nodule accretion:
(1) hydrogenous or direct seawater precipitation; (2) oxic
diagenesis, referring to a variety of ferromanganese accretion processes
which occur in oxic sediments; and (3) suboxic diagenesis, in
which Mn is mobilized by the oxidation of sedimentary organic matter.
The REE geochemistry of site H nodules suggests an additional
accretionary process, resulting from the degradation of labile
organic matter in an oxic environment.
Contrasts in REE patterns, major element compositions, and
fluxes of various elements in sedimentary samples from MANOP site H
(a nodule-bearing site) with site M (a nodule-free site) reveal
differences in the sources of material to the seafloor in the two
environments. Geochemical data imply a greater hydrothermal influence
and a greater accumulation of organic carbon in site M sediments
relative to those at site H. Comparisons of the REE and major
element geochemistry of H and M sediment traps, sediments, and
crusts, as well as nodules from site H, imply that the reductive
mobilization of Mn and geochemically similar elements is controlled
primarily by surface water biological productivity and the accumulation
of organic carbon in the sediments. The organic flux to the
sediments determines the degree of depletion of oxidants, which
governs the reduction, mobilization, and supply of metals to nodule
surfaces. It appears that the depth to the Mn redox boundary and
possibly seasonal variations in the flux of organic material to the
seafloor determine whether nodules grow or whether Mn is exported to
bottom waters. / Graduation date: 1985
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The leaching of manganese nodules by acid ferrous chloride solutionsFreehill, Barry William. January 1978 (has links)
Thesis (M.S.)--University of Wisconsin--Madison. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 96-97).
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Rare earth abundances in manganese nodulesEhrlich, Alan M. January 1968 (has links)
Thesis (Ph. D.)--Massachusetts Institute of Technology, 1968. / Prepared under: DSR 78841 Contract nonr 1841(74), NR 083-157, Office of Naval Research. DSR 76788, contract AT (30-1)-905, Atomic Energy Commission. Includes bibliographical references (p. 203-216).
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Survey of surficial bottom sediments and the distribution of manganese nodules in Green Bay, WisconsinHall, Carol Anne. January 1970 (has links)
Thesis (M.S.)--University of Wisconsin, 1970. / Typescript (photocopy). eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (p. [97]-101).
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Selective dissolution and extraction of metals from deep sea ferromanganese nodulesStiff, Ann Clopton January 1981 (has links)
No description available.
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The geochemistry of some manganese nodules and associated pelagic deposits,Cronan, D. S. January 1967 (has links)
Thesis (Ph. D.)--University of London, 1967. / Bibliography: leaves 285-307.
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Lake Michigan ferromanganese nodulesRossmann, Ronald. January 1974 (has links)
Thesis-- University of Michigan, 1973.
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