Abstract

• The present area is situated in the Monywa-Salingyi segment of Western Myanmar Arc that is composed of diverse igneous rocks during early Cretaceous to Quaternary age. Although the plutonic rocks having mafic to felsic composition are exposed, the present research emphasize only on granite and granophyre as granitoid rocks. Mineralogically, these granitoid rocks are mainly composed of quartz, orthoclase, plagioclase, hornblende, and biotite. The textures of granitoid rocks indicate in terms of volatile rich composition, highly differentiate and magma mixing condition of magma. Moreover, the mineral composition and textures strongly supports to interpret I-type, calcalkaline magma. Petrochemically, these rocks belong to the calc-alkaline suite and I-type granitoid. In addition, they can also be interpreted as the subduction related volcanic arc. Thus granitoid rocks were probably formed in an arc setting during subduction of Neo-Tethyan oceanic lithosphere.