Fig. 4

The ⁸⁷Sr/⁸⁶Sr_(t) and εNd_(t) of the AC. Age-corrected initial Sr and Nd isotopic compositions of the AC (including existent Sr and Nd isotopic from the AC) compared to HP-mafic rocks, HP-mica-schists, GLOSS, MORB, and AOC (compiled from Cohen et al.³⁹, Yáñez et al.⁴⁰, Plank & Langmuir⁴¹, Hauff et al.⁴², Zheng et al.⁴³, Halama et al.⁴⁴, Ker et al.⁴⁵, Keppie et al.⁴⁶, King et al.⁴⁷, Wang et al.³⁶, Zhu et al.⁴⁸, and Muñoz-Montecinos et al.⁴⁹. These isotopic ratios are corrected for metamorphic ages to characterize isotopic metasomatism and identify fluid sources responsible for fluid-rock interaction processes in subduction zones.