Graphical Abstract . Schematic plot illustrates the relation between Mosha fault and Damavand Volcano. Red and Blue represent the hot and cooled magma of Damavand, respectively (after Mostafanejad et al., 2011, Shomali & Shirzad, 2014, Yazdanparast & Vosooghi, 2014, Vajedian et al., 2015, Eskandari et al., 2018). The red star is the 7th May 2020 M5.1 mainshock hypocenter. Red dashed line is the Mosha fault. Horizontal dashed lines are crustal velocity layers from Tatar et al. (2012).