Abstract

• The Mokpalin-Kyauktanlay area occurs in the southern part of Mogok Metamorphic belt and belongs to the central granitoid belts of Myanmar. The trace elements and rare earth elements geochemistry data are used for the formation of granitoids of the study area. Geochemically, the whole rock of silica ratios varies from 64.55 to 75.31%, Al2O3, Fe2O3t, CaO, MgO ranges from 14.02-17.85%. 1.00-7.87%, 1.16-6.81 and, 0.24-3.24%. The varying ratios of the incompatible elements of Rb/Sr ratios (0.1-0.5), Ba/Sr ratios (0.4-2.9), and Ba/Rb ratios (4-16.3) in granitoids. The granitoid rocks have enrichment in the Light Rare-Earth Elements (LREE) and depletion in Heavy Rare-Earth Elements (HREE) and with negative europium anomalies and they come from the same origin. The age of quartz diorite was about 90.8±0.8 Ma (Mitchell et al. (2012). Tectonically they fall volcanic arc granite fields and were products of volcanic arc magmatism. These granitoids were generated from the partial melting of the shallow crust.