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also show a relative enrichment in Th (between 0.86 and 3.76 ppm) and La (between 7.3 and 15.9 ppm), as well as depletion in Nb-Ta-Ti (supplementary Fig. S2a and S2d), suggested by several authors (e.g Condie, 1976; Pearce 2008; 2014) as indicative of supra-subduction setting with slab fluids and/or sediment melt participation in the magma generation. As a whole, the meta- granitic rocks within the Upper Unit of Mérida Massif show pat- terns (Fig. 5d and 5e) with great enrichment in large ion lithophile elements (LILE) and light rare earth elements (LREE), with moderate to high depletion in HREE and also in HFSE ele- ments (Supplementary Fig. S2b and S2c), typical of rocks derived from subduction-related settings (Brown et al., 1984; Davidson, 1996; Pearce 1996a). However, the highly fractionated LREE pat- terns and the depleted HREE for the San Andrés and Valverde rocks (avg. 35.14 and 36.55, respectively) and low Zr and Ti contents, as well as the positive Eu anomaly shown by the Valverde Metaig- neous Complex samples (avg. Eu/Eu*= 1.07), could suggest a differ- ent magmatic source than that of Don Álvaro and Valle Real Fig. 7. (a) V – Ti diagram (Shervais, 1982; Pearce, 2014) for the metabasites of the Montemolín Formation. (c) and (d) tectonic setting discrimination diagrams for metagranites (Pearce et al., 1984); dotted regions in (b) represent areas for Andean and Alaskan arc batholiths (Pearce et al., 1984). Fields: ORG, Ocean-ridge granitoids; syn - COLG, Syncollisional granitoids; post-COLG, Postcollisional granitoids; VAG, Volcanic-arc granitoids; WPG, Within-plate granitoids. (d) Th – Nb/16 - Hf/3 discrimination diagram (Wood, 1980) showing a common tectonic setting for the igneous complexes of the Mérida Massif. Fields: A) N-MORB; B) E-MORB and within-plate tholeiites; C) within-plate alkaline basalts; D) volcanic-arc basalts, the dashed line separates the island-arc tholeiites (Hf/Th > 3) from the calc-alkaline basalts (Hf/Th < 3). E. Rojo-Pérez, U. Linnemann, M. Hofmann et al. Gondwana Research 109 (2022) 89–112 &KDSWHU