Deep-ocean polymetallic nodules as a resource for critical
One of the first factors to be considered, with respect to potential deep-ocean mining, is whether the unique characteristics of marine-based mine sites provide favourable incentives for mine development. Marine-based mine sites do not require roads, ocean-floor ore-transport systems, water-transportation or … See more
In addition to the advantages presented by the unique characteristics of deep-ocean-mine sites, it is important to consider how the tonnage of critical metals … See more
Exploration carried out by different groups since ~1980 showed that two main parameters can be used to distinguish between economic and uneconomic … See more
Polymetallic-nodule-mining operations in the deep ocean consist of the following major components: collector robot on the ocean floor, vertical riser system, … See more
Following the mining and collection of polymetallic nodules from the abyssal plain of the deep ocean, as well as transport to onshore facilities, the metals hosted … See more
First hyperspectral imaging survey of the deep seafloor: High ...
WEBMay 1, 2018 · Manganese nodules are found in deep-sea basins (>4000 m water depth) characterized by low sedimentation rates (<5 mm kyr −1), with major nodule regions …
Deep Sea Minerals: Manganese Nodules, a physical, …
WEBDec 9, 2013 · Nodules are also concentr ated in the Peru Basin, in the Penrhyn Basin near the C ook Islands (Figure 5), and at aby ssal depths in the Indian and Atlantic oceans.
Growth history of manganese nodules and crusts of the Peru Basin
WEBDec 3, 1996 · In the nodule field of the Peru Basin, situated south of the zone of high bioproductivity, a relatively high flux of biogenic matter explains a distinct redox boundary …
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Compositional changes of surface sediments and variability of …
WEBJan 1, 2001 · We distinguished two main types of nodules in Peru Basin: large botryoidal nodules (so-called “cauliflower-nodules”) and small ellipsoidal nodules. Botryoidal …
Composition, Formation, and Occurrence of Polymetallic Nodules
WEBMar 29, 2017 · Learn about the characteristics, metal content, and formation processes of polymetallic nodules, also known as manganese nodules, on the deep-sea floor. This …
Growth history of manganese nodules and crusts of the Peru Basin
WEBThe layering of nodules is mainly the result of organisms moving nodules within the oxic surface sediment from diagenetic to hydrogenetic environments. The frequency of such …
Reyss, J-L et al. (2022): Growth of a manganese nodule from Peru …
WEBAttempts have been made to study the entire growth history of a manganese nodule from the northern part of Peru Basin in the Pacific using radiochemical profiles of …
Manganese: Predominant Role of Nodules and Crusts
WEBA chapter from a book on marine geochemistry that reviews the geochemistry, mineralogy and biology of manganese nodules and crusts in the ocean. It covers the sources, fluxes, …
Association of deep-sea incirrate octopods with manganese …
WEBDec 19, 2016 · Stalked-sponge fauna in the Peru Basin require the presence of manganese nodules as a substrate, and near total collapse of such sponge populations was observed …
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