“…Thesouthern Himalayan front responds to changes in precipitation overwhelmingly and sediment generation takes place both via physical and chemical weathering (Dosseto and Vigier, 2015). The extreme hydrological events that are more common and that ride over phases of strengthened monsoon (Singh, 2014;Devrani et al, 2015;Das et al, 2015;Sundriyal et al, 2015;Srivastava et al, 2017) help in mobilizing huge amounts of sediment from the paraglacial regions into the low-gradient lower valley segments (Ray et al, 2011) Foothills and Intermontane valleys: In the foothills of the Himalaya, alluvial fans, coalescing fans (piedmont), terraces, and duns (intermontane valleys) are the major landforms Suresh et al, 2007;Thakur et al, 2007;Tandon, 2008, 2010;Goswami and Mishra, 2013;Pandey et al, 2014;Tandon and Singh, 2014;Abrahami et al, 2018). On the basis of Optically Stimulated Luminescence (OSL) dates in Pinjaur/Son Dun, Suresh et al (2007) suggested that the beginning of fan building activity initiated at ~90 ka.…”