Fig. 1

a Landsat composite image showing the position of the CIMC between the Arabian and Turan plates (image is from Google Earth). b Map of Iran illustrating the location of SaSZ within the Zagros Orogeny, W Iran (adapted from Deevsalar et al. 2014). The Zagros Folded-Thrust Belt (ZFTB), Sanandaj–Sirjan Zone (SaSZ), and the Urumieh–Dokhtar Magmatic Arc (UDMA) are three major subdivision of Zagros Orogen. c Simplified map of NW Iran showing the distribution of magmatic complexes in the northern SaSZ. 1-Oshnavieh and Urumieh (Os), 2-Naghade-Khalfe-Pasveh (N-K-P); 3-Piranshahr (Pi), Saqqez, Takab (Ta), Miandoab, Mahabad (Mh), Sanandaj (Sn) and Baneh (Ba); 4-Qorveh (Qr); 5-Kamyaran (Ka); 6-Almogholagh (Al); 7-Alvand (Al); 8-Malayer–Boroujerd (MB)