Geochemistry and Sr-Nd isotopic studies of Palaeoproterozoic (ca. 2.3 Ga) meta-lamprophyre from Rapuru area, Nellore Schist Belt, Southern India: implication for back-arc basin magmatism and its relevance to the Columbia Supercontinent assembly

Supplementary material 2: Supplementary figure 8 b) Initial εNd(t) isotope vs. ΔNb variation diagram shows evidence of SCLM enriched by ancient subduction related sediments source for RL. c) fSm/Nd ns. εNd 2.3 Ga variation diagram shows decreasing trend for RL dykes. d) Initial εNd(t) isotope vs. time in Ma considering 2300 Ma calculated ages. e) ⁸⁷Sr/⁸⁶Sr isotope vs SiO₂ variation diagram show poor correlation for RL dykes. f) 100/Nd vs. initial εNd(t) isotope shows poor correlation for RL dykes.