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Saturday, May 16, 2020 | History

4 edition of Manganese Modules and Sediments in the Equatorial North Pacific Ocean found in the catalog.

Manganese Modules and Sediments in the Equatorial North Pacific Ocean

U. Von Stackelberg

Manganese Modules and Sediments in the Equatorial North Pacific Ocean

Sonne Curise So 25, 1982 (Geol Johrbuch Reihe D, Heft 87 Ser)

by U. Von Stackelberg

  • 23 Want to read
  • 30 Currently reading

Published by Lubrecht & Cramer Ltd .
Written in English

    Subjects:
  • Science/Mathematics

  • The Physical Object
    FormatPaperback
    ID Numbers
    Open LibraryOL11567256M
    ISBN 100945345194
    ISBN 109780945345190

    Indian Ocean _____ _ 37 Maps showing target areas for exploration for manganese nodules rich in combined nickel and copper in: Central northeastern Pacific Ocean _____ 40 Central north equatorial Pacific Ocean _ _ 41 Cited by: Manganese nodules discovered on the deep seafloor in January (Image credit: Thomas Walter) Manganese nodules have been found in every ocean, but are most common in the Pacific Ocean.

    Citation: Bischoff, JL, Piper DZ, Heath GR, Leinen M. Geochemistry of deep sea sediments from the Pacific manganese province: DOMES Sites A, B, and C. Marine geology and oceanography of the Pacific manganese nodule province.   Study sites. Manganese oxide-rich sediment was sampled at three locations: the Gullmar Fjord on the west coast of Sweden (58°N °E; Engström et al., ), the Norwegian Trough in Cited by:

    Over millions of years, manganese and iron oxides can form balls called manganese nodules (also called polymetallic nodules) that sit atop sediment covering the abyssal plains of the global ocean. These nodules form by the accretion of iron and manganese oxides around a tiny nucleus, such as a large grain of sand, a sharks tooth, or older.   The equator subdivides the Pacific ocean into the North Pacific Ocean and South Pacific Ocean. The Pacific ocean is a historically significant part in the world. The Pacific plays its role in classifying the World Time Zones. The degree Meridian passes through the Pacific. It is called as the international date line.


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Manganese Modules and Sediments in the Equatorial North Pacific Ocean by U. Von Stackelberg Download PDF EPUB FB2

Get this from a library. Manganese nodules and sediments in the equatorial North Pacific Ocean: Sonne cruise SO 25, [Ulrich von Stackelberg; Helmut Beiersdorf;].

Manganese nodules were first discovered on the ocean floor miles south-west of the Canary Islands on Februduring the first complex oceano­ logical cruise of the Challenger. They surprised researchers by their unusual shape and also by their unusual chemical composition;Brand: Springer Netherlands.

Deep-sea manganese nodules, once an obscure scientific curios­ ity, have, in the brief span of two decades, become a potential mineral resource of major importance. Nodules that cover the sea floor of the tropical North Pacific may represent a vast ore de­ posit of manganese, nickel, cobalt, andBrand: Springer US.

The relationship between nodule formation and sedimentary processes in the equatorial North Pacific Ocean is discussed and compared with nodules from the Central Pacific basins. Sedimentary hiatuses during the Neogene played a significant role in the initial formation of manganese by: 3.

Sedimentary deposition in the Pacific Ocean is largely influenced by: (1) the great size of the ocean and the relatively small influx of river water; (2) high seismic and volcanic activity, especially in the marginal zone; (3) deep water characterized by relatively high alkalinity and high concentrations of silicate and phosphates; (4) well-developed equatorial current system resulting in high plankton production near the equator.

An attempt is made to outline a satisfactory general theory for the formation of Pacific deep-sea manganese nodules based on a consideration of the time of initiation of formation of the nodules, a mechanism of maintenance of the nodules at the sediment surface and the role of biological productivity of the surface waters in influencing nodule by: Marine sediments and ferromanganese nodules from the Pacific Ocean have been analyzed for the ratio of solid manganese.

We tested six chemical methods. A total of 10 12 metric tons of manganese nodules is estimated to be presently at the surface of the Pacific Ocean sediments. The nodules are indicated to be forming at an annual rate of 6 × 10 6 Author: James R.

Hein. The distribution of rare earth elements in manganese micronodules and sediments from the equatorial and southwest Pacific Author links open overlay panel H.

Kunzendorf 1 R. Gwozdz 1 G.P. Glasby 2 P. Stoffers 3 R.M. Renner 4Cited by: > lice through a manganese nodule: Over millions of years minerals are deposited around a core.

Metal-rich clumps Together with cobalt crusts, manganese nodules are considered to be the most important deposits of metals and other mineral resources in the sea today.

North Pacific Ocean Abyssal Plain Manganese Nodule Pelagic Sediment Nepheloid Layer These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm by: Marine Geology and Oceanography of the Pacific Manganese Nodule Province by James L.

Bischoff,available at Book Depository with free delivery worldwide. Deep-ocean polymetallic nodules form on or just below the vast, sediment-covered, abyssal plains of the global ocean.

Polymetallic nodules primarily consist of precipitated iron oxyhydroxides and Author: James R. Hein, Andrea Koschinsky, Thomas Kuhn. Manganese nodules, together with micronodules and encrustations, are ferromanganese oxide deposits which contain variable amounts of other elements (Table 1).

They occur throughout the oceans, although the economically interesting varieties have a much more restricted distribution. Manganese nodules are mostly found at the sediment-water interface, although it is not uncommon to find them buried within the first 50 m of marine sediment.

That nodules are rarely found at greater depths has raised legitimate concerns as to their origin and rates of growth. COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.

@article{osti_, title = {Geochemistry of rare earth elements in the formation of ferromanganese nodules in the Peruvian Trough of the Pacific Ocean}, author = {Dubinin, A V and Strekopytov, S V}, abstractNote = {The behavior of Fe, Mn, Al, P, Co, Ni, Cu, and the rare-earth elements in myopelagic deposits and nodules, as well as in the upper and lower parts of nodules from the same bottom.

Polymetallic nodules, sediments, and deep waters in the equatorial North Pacific exhibit highly diverse and distinct bacterial, archaeal, and microeukaryotic communities AbstractConcentrated seabed deposits of polymetallic nodules, which are rich in economically valuable metals (e.g., copper, nickel, cobalt, manganese), occur over vast areas of.

W hen published inJ. Mero's Mineral Resources of the Sea ([1][1]) painted a picture of an essentially limitless resource of more than 1 trillion metric tons of manganese nodules on the Pacific deep-sea floor that were growing at a rate faster than could possibly be exploited, a literally inexhaustible supply of metals such as Mn, Co, Ni, and Cu.

This book literally launched a hundred Cited by:   Scientists recently discovered a large batch of manganese nodules on the floor of the Atlantic Ocean.1 These metallic pellets provide strong evidence that most seafloor sediments were deposited rapidly, not slowly and gradually over millions of years.

Are these nodules evidence of the Genesis Flood. Manganese nodules are found scattered on the ocean floor. Though generally. The greatest known concentration of Ni and Cu-rich Fe–Mn nodules occur in the so-called Clarion–Clipperton Zone in the eastern equatorial Pacific Ocean where nodule density can reach a wet weight of 75 kgm 2 of seabed (Hein and Koschinsky ; Petersen et al.

). Additional, important, occur-rences are found in the Peru Basin off Cited by: Environmental aspects of manganese nodule mining Figure 1. The eastern North Pacific Ocean, showing the manganese nodule zone, the location of test sites mentioned in the text, and surface and subsurface currents.

See A.F. Amos, O.A. Roels, C. Garside, T.C. Malone, AZ. Paul, ‘EnvironmentalFile Size: KB.A major factor causing the difference of REE abundances between nodules and sediments is the redox conditions. The redox intensity of the ocean floor of the Pacific is controlled mainly by Antarctic Bottom Water (AABW).

The iron‐bearing facies in the nodules is the main carrier of by: 1.