Sediment records as archives of the Late Pleistocene–Holocene hydrological change in the alluvial Narmada River basin, western India

摘要: Abstract The rivers of western India are monsoon dominated and have been so throughout the late Quaternary. Sediment accumulation in these river basins has controlled by climatic tectonic changes over a time span from Late Pleistocene to recent. lithofacies assemblages associated with various sediment archives Narmada basin range boulders alluvial fans overbank fines on plains. Estimates, based clast size, stream power competence, bed shear stress discharge reveal that hydrological conditions during (∼90 ka) were comparable present day. size transported clasts thickness accumulated indicate influence subsidence rather than an increase discharge. Discharge estimates sedimentary structures preserved alluvial-plain facies suggest channel had persistent flow, low width–depth ratio large meander wavelength. Holocene more pronounced where early is marked high-intensity regime induced erosion incision earlier sediments. mid-Holocene was less sinuous higher amplitude comparison present-day channel. Palaeo-fluvial reconstructions reach important tools understanding long-term intricate fluvial architecture River ensures scope for detailed studies identify phases weak enhanced regimes.