Evidence and consequences of tilting of two alluvial fans in the Pinjaur dun, Northwestern Himalayan Foothills

The Pinjaur dun is a NW–SE trending intermontane valley in the foothills belt of the Punjab Sub-Himalaya. In this dun, the Kiratpur and the Balad Rivers have formed fans with areas of ∼28 and ∼21 km2, respectively. A southwest tilt for the Kiratpur and Balad fans of 0.83° and 0.57°, respectively, has been determined. Based on these angles of tilt, uplifts of ∼41 and ∼46 m at the fan head has been calculated for the Kiratpur and Balad fans, respectively. The incision by the Kiratpur and Balad Rivers at the fan heads is also approximately 45 m.