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    Regional variability in occurrence and distribution of polymetallic nodules in the central Indian Basin

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    Mar_Georesour_Geotechnol_34_542a.pdf (560.6Kb)
    Date
    2016
    Author
    Valsangkar, A.B.
    Rebello, J.M.S.
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    Abstract
    Regional scale morphological studies on different-sized polymetallic nodules from the Central Indian Basin show that only 2–5 cm sized nodules have highest occurrence per station (92–94% along latitudes; 88–94% along longitudes). A nodule size shows an inverse relationship with the nodule distribution, grade, and abundance. Interestingly, only 3–4 and 4–5 cm sized nodules have highest grade, abundance, and distribution percentages along longitudes in P<sub>1</sub>, first generation mine site and relinquished area, which further implies that the nodule mining along the longitude would be beneficial. Different-sized nodule groups suggest their formation under variable environmental conditions that existed in the Central Indian Basin. The coexistence of different-sized nodules suggests different environmental conditions existed in the Central Indian Basin
    URI
    http://drs.nio.org/drs/handle/2264/4959
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