Fig. 9

A Zr/Y vs. Th/Yb (Ross & Bédard, 2009), B La/Yb vs. Zr/Nb, C Nb/Yb vs. Th/Yb (Pearce, 2008), D Zr/Y vs. Nb/Y (Condie, 2005) diagrams. In A, B and C the values of the end-members N- and E-MORB, OIB and PM are from Sun and McDonough, (1989), UC and LC are from Rudnick and Gao, (2003). In D the fields and end-member values are according to Condie, (2005) and references therein. DM: depleted mantle; E-/N-MORB: enriched and normal mid ocean ridge basalts, EM1 and EM2: enriched mantle sources, EN: enriched component, LC: lower crust, OIB: oceanic island basalts, OPB: oceanic plateau basalts; UC: upper crust. Data sources, West-Central Alborz: Masuleh gabbro (Khalatbari Jafari et al., 2016), Abrud basalt (Rezaei et al., 2020), Javaherdasht–Javaherhdeh gabbros (Haghnazar et al., 2011; Monsef et al., 2022), South Amlash basic rocks (Salavati, 2008; Salavati et al., 2013), Talash-Lahijan basalt (Monsef et al., 2022), Marzanabad basalt (Doroozi et al., 2016), and Deylaman igneous complex (Akmali et al., 2019), Sabzevar basic rocks: (Ghasemi et al., 2018; Kazemi et al., 2019; Rahmani et al., 2020; Shafaii Moghadam et al., 2014, 2020; Shojaat et al., 2003). Basin and Range: (Hawkesworth et al., 1995; Hooper et al., 1995)