Earth Surf. Dynam., 9, 463–485, 2021 https://doi.org/10.5194/esurf-9-463-2021 © Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License. Implications of the ongoing rock uplift in NW Himalayan interiors Saptarshi Dey1, Rasmus C. Thiede2, Arindam Biswas3, Naveen Chauhan4, Pritha Chakravarti1, and Vikrant Jain1 1Earth Science Discipline, IIT Gandhinagar, Gandhinagar-382355, India 2Institute of Geosciences, Christian Albrechts University of Kiel, 24118 Kiel, Germany 3Department of Applied Geology, IIT-ISM Dhanbad, Jharkhand-826004, India 4Atomic Molecular and Optical Physics Division, Physical Research Laboratory, Ahmedabad, India Correspondence: Saptarshi Dey (
[email protected]) Received: 28 April 2020 – Discussion started: 18 June 2020 Revised: 1 April 2021 – Accepted: 19 April 2021 – Published: 2 June 2021 Abstract. The Lesser Himalaya exposed in the Kishtwar Window (KW) of the Kashmir Himalaya exhibits rapid rock uplift and exhumation (∼ 3 mm yr−1) at least since the late Miocene. However, it has remained unclear if it is still actively deforming. Here, we combine new field, morphometric and structural analyses with dating of geomorphic markers to discuss the spatial pattern of deformation across the window. We found two steep stream segments, one at the core and the other along the western margin of the KW, which strongly suggest ongoing differential uplift and may possibly be linked to either crustal ramps on the Main Himalayan Thrust (MHT) or active surface-breaking faults. High bedrock incision rates (>3 mm yr−1) on Holocene–Pleistocene timescales are deduced from dated strath terraces along the deeply incised Chenab River valley.