Fig. 6: Proposed mechanism and Cenozoic evolution of microbial-iron-mediated REY enrichment in deep-sea sediments. | Communications Earth & Environment

Fig. 6: Proposed mechanism and Cenozoic evolution of microbial-iron-mediated REY enrichment in deep-sea sediments.

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

Fig. 6: Proposed mechanism and Cenozoic evolution of microbial-iron-mediated REY enrichment in deep-sea sediments.

a Schematic diagram of microbial iron metabolism mediating REY enrichment in marine sediments. P-OM: phosphorus-containing organic matter. b Cenozoic evolution of ΔSSTL-H and Δδ15NP-A as well as deposit ages of Pacific deep-sea REY-rich. The error bars represent the dating uncertainties. Long blue arrows represent ice sheet expansion stages in the northern and southern hemispheres. ΔSSTL-H and Δδ15NP-A data sourced from Auderset et al.32 and Hess et al.31; REY-rich sample ages are provided in Supplementary Table 3. Epoch abbreviations: Pleistocene (Ple), Pliocene (Pli), Paleocene (Pal).

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