SEDIMENT PRODUCTION AND ROUTING IN THE GANGES-BRAHMAPUTRA RIVER SYSTEM BASED ON DETRITAL U-Pb AGE DATING ANALYSIS

One of the biggest river systems in the world, the Ganges and Brahmaputra River system (GB) is essential to the transport and deposition of sediments into the Bay of Bengal. On average, the GB River system carries about 500 MT of sediment each year from the Himalaya to the Bay of Bengal and the deep-sea Bengal Fan. Understanding the sediment dynamics in the GB River system requires an understanding of the source-to-sink sediment routing. Prior research on the GB River system concentrated primarily on its geomorphology or tectonics. Nevertheless, no noteworthy research has been conducted on the source-to-sink routing in the GB River system utilizing an investigation of the sediments' detrital-zircon U-Pb age distribution. The objective of this research is to reveal the source and routing of sediments from the upstream Himalayan regions to the downstream Bay of Bengal. The sediment sources and their routing mechanisms will be traced by gathering sediment samples from the modern GB River system and using detrital zircon U-Pb dating analysis. The anticipated outcomes will reveal the seasonal, temporal, and geographical changes in sedimentary provenance by shedding light on the geomorphological evolution of the system and their response to climate and tectonic forces. The discoveries of this study will have a broader impact on understanding the sedimentary processes in big river systems in general.