Fig. 2: Geochemical characterization of deep-sea sediments from the Pigafetta Basin. | Communications Earth & Environment

Fig. 2: Geochemical characterization of deep-sea sediments from the Pigafetta Basin.

From: Microbial iron cycling illuminates the biological contribution and potential climate drivers of deep-sea rare earth element enrichment

Fig. 2: Geochemical characterization of deep-sea sediments from the Pigafetta Basin.

a Downcore variations of elemental concentrations, total organic carbon (TOC), magnetic susceptibility, and Fe isotope ratios in core GC112. The light blue shaded area denotes REY-rich layers (ΣREY > 700 mg kg−1)6. Data from core GC18 are shown for comparison (gray hollow squares). Correlation plots of ΣREY versus Fe and Mn (b), and versus P and Ca (c). Data from this study (solid squares) and compiled literature (hollow circles) are plotted24,51. d REY distribution patterns of the REY-rich layer in core GC112, normalized to Post-Archean Australian Shale (PAAS) and Pr3,52. Patterns from representative hydrothermal fluids, seawater, and various porewater types are shown for comparison3,4,12,17,53,54. e Iron phase distribution in the REY-rich layers (n = 3), error bars represent the analytical precision; background sediment data are provided in Supplementary Table 2.

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