manganese nodule


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Related to manganese nodule: Foraminifera

manganese nodule

n
(Geological Science) geology a small irregular concretion found on deep ocean floors having high concentrations of certain metals, esp manganese
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References in periodicals archive ?
The inspiration behind this data management system all started with a JPI Oceans project called "Mininglmpact," which used the ABYSS AUV to evaluate the prolonged effects of manganese nodule mining within a deep-sea environment...
Sir Arvi pointed out, among other things, that contrary to the fears of a couple of decades ago about depletion of mineral resources, the current picture was much more encouraging: there are presently 52 major known, unworked copper orebodies and at least 14 of nickel, while the extensive seabed manganese nodule resources containing nickel and cobalt still await recovery on any significant scale.
One example is manganese nodules, rocks on the seafloor composed of iron and manganese hydroxide.
Regional opportunities to harvest Seafloor Massive Sulphides and Manganese Nodules
Gatchalian said Benham Rise was important because of its '100 percent coral cover and a diverse assemblage of marine resources; deep-sea reef ecosystem, which is a potential source and refuge for shallow reef fish and other organisms affected by climate change; large amounts of natural gas deposits and manganese nodules.'
Caption: The Casper octopus breeds on manganese nodules and is at risk from deep-sea mining
It includes deep seabed resources like iron, manganese nodules and crusts, oil, gas and gas hydrates with last having all the trappings of evolving into useful source of clean energy.
Von Stackelberg, "Growth history of manganese nodules and crusts of the Peru Basin," Geological Society, vol.