[SCG66-18] Statistic and isotopic characterization of deep-sea sediments in the western North Pacific Ocean
Keywords:deep-sea sediment, seafloor mineral resources, REY-rich mud, multivariate analysis, isotopes, rare-earth elements
To further characterize the data clusters statistically extracted from the high-dimensional dataset, we implemented Sr–Nd–Pb isotope analyses on a set of representative samples of each cluster. Here we regarded samples closest to each cluster centroid (calculated center of each cluster) as the representatives of each cluster. The representative bulk sediment samples were pre-treated to isolate detrital silicate fraction, and isotopic compositions of the silicate fractions were analyzed. In the presentation, by integrating the statistic and isotopic information, we will discuss the origin(s) of deep-sea sediments including REY-rich mud in the western North Pacific Ocean.
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