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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
- IIT JAM
- Geology (GG)
Large deposits of marine manganese nodules is usually found in
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Saurabh 1
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Manganese nodules Or nodules primarily forms in deep ocean or one can say in abyssal plain around 3000m deep. Consists dominantly of De, Mn, Co and Ni and most viable condition for this concretion to form is that sediment accumulation shall not prevail.
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Sajan sarthak Best Answer
MANGANESE NODULES Manganese nodules are rounded, hard lumps of manganese, iron, and other metals typically 5 centimeters (2 inches) in diameter up to a maximum of about 20 centimeters (8 inches). When cut in half, they often reveal a layered structure formed by precipitation around a central nucleation object . The nucleation object may be a piece of lithogenous sediment, coral, volcanic rock, a fish bone, or a shark's tooth. Manganese nodules are found on the deep-ocean floor at concentrations of about 100 nodules per square meter (square yard). In some areas, they occur in even greater abundance resembling a scattered field of baseball-sized nodules The formation of manganese nodules requires extremely low rates of lithogenous or biogenous input so that the nodules are not buried.
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Saurabh 1![best-answer]()
Manganese nodules Or nodules primarily forms in deep ocean or one can say in abyssal plain around 3000m deep. Consists dominantly of De, Mn, Co and Ni and most viable condition for this concretion to form is that sediment accumulation shall not prevail.