The Javaherdasht gabbros cropped out in the northern part of the Alborz Mountains in east of Guilan Province. According to geochemical, petrographical and field studies, they are divided into two types of gabbros including non-layered and layered gabbros, and layered gabbros. Regarding the mineralogy, the first group gabbros include plagioclase, clinopyroxene, olivine and biotite as primary pha...