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33 Fig. 5. Chemical diagrams for Ediacaran metagreywackes from the Serie Negra and Lower Alcudian (Fuenlabrada et al., 2016). A) Chondrite normalized REE plot (Nakamura, 1974); dotted lines correspond to the PAAS (Post Archean Australian Shale; Taylor and McLennan, 1985) and UCC (Upper Continental Crust; Condie, 1993). B) PAAS normalized trace elements diagram. C) Trace elements diagrams with tectonic setting discrimination fields (after Bhatia and Crook, 1986). E. Rojo-Pérez et al. 3UHFDPEULDQ 5HVHDUFK ² Contrasting isotopic sources: CIZ - OMC boundary