Earth, Atmosphere & Environment Sciences
Title : | Tectonic and metamorphic evolution of Tirodi-Amgaon gneisses and associated granulites: Implications for the geodynamic evolution of a terrane boundary in the southwestern part of the Central Indian Tectonic Zone (CITZ) |
Area of research : | Earth, Atmosphere & Environment Sciences |
Focus area : | Geology |
Principal Investigator : | Dr. suranjan Ghosh, Indian Institute of science Education And Research (IIsER) Kolkata, West Bengal |
Timeline Start Year : | 2024 |
Timeline End Year : | 2026 |
Contact info : | suranjan93@gmail.com |
Details
Executive Summary : | The Indian landmass has evolved due to the amalgamation of various Precambrian crustal domains along regional-scale shear zones. The E-W trending Central Indian Tectonic Zone (CITZ) in central India is a sheared crustal entity dominated by greenschist- to amphibolite-facies volcano-sedimentary supracrustal sequences and granulite domains. The southern part of the CITZ is dominated by gneissic-migmatitic terrain, including Tirodi and Amgaon gneisses. The CITZ has attracted significant scientific interest due to its crustal boundaries and tectonic scenario. However, major controversies persist on the position of amalgamation, timing of accretion, and direction of subduction. Petrochronological constraints have been considered a powerful tool in deciphering tectono-thermal evolution of poly-deformed terrains. This proposal aims to present an overview and re-evaluation of gneisses and granulites in and around the Tirodi-Balaghat region in the southern CITZ and neighboring Bastar Craton. The study focuses on the spatio-temporal distribution of gneissic-granulite lithologies, integration of zircon U-Pb geochronology and U-Th-total Pb monazite ages, and understanding the tectonic setting of gneissic-granulite terrain. The study also evaluates the role of southern CITZ in the context of the Great India Proterozoic Fold Belt (GIPFOB) within Columbia and Rodinia supercontinent assemblies. |
Total Budget (INR): | |
Organizations involved