Paper No. 181-6
Presentation Time: 9:00 AM-6:30 PM
DATING THE MAGMATO-METAMORPHIC EVENTS IN THE CHOTTANAGPUR GNEISS COMPLEX, EASTERN INDIA
The Chottanagpur Gneiss Complex (CGC) in Eastern India is an accretionary orogen sandwiched between the Meso/Paleoarchean Singhbhum Craton in the south and the Paleoproterozoic Munghyr Belt in the north. Reconstruction of the Meso/Neoproterozoic accretion dynamics of the crustal domain is poorly constrained due to the lack of robust age data in the high-grade basement gneisses, deformed granitoids and the linear belts of amphibolite facies supracrustal rocks comprising the dominant lithodemic units in the CGC. In this study, we constrain the deformation-metamorphic history and ages of the units based on whole rock lithogechemistry and Laser ablation U-Pb dating of zircons in Simultala (north CGC) and Daltongunj (mid-central CGC) respectively.