See more from this Division: Joint Sessions
See more from this Session: Hydrogeomorphology and Hydropedology: Emerging Disciplines that Embrace Earth and Soil Sciences
Abstract:
Our purpose is to examine weathering processes and alkalinity losses from Indo-Gangetic soil/paleosol profiles on the floodplain over the Neogene. The Himalayan foreland is the wettest and warmest part of the Himalayan system, and as such probably contributes significantly (or, perhaps, dominates) alkalinity of the Ganges and Brahmaputra Rivers. Using quantitative mass balance, this study quantifies present-day losses from both carbonate and silicate weathering along a transverse extending from western (dry) to eastern (wet) India and compares present-day weathering fluxes in the Gangetic lowlands to the mass losses over time using buried paleosols in the Siwalik sequence. We also examine weathering losses of Sr in floodplain soils and the implications for the impact of Himalayan weathering on marine 87Sr/86Sr ratios.
See more from this Division: Joint Sessions
See more from this Session: Hydrogeomorphology and Hydropedology: Emerging Disciplines that Embrace Earth and Soil Sciences