Evidences of Neo-Tectonic Landforms Between Srinagar and Bagwan Area in Lower Alaknanda Valley (Garhwal Himalaya), India
In this paper an attempt has been made to identify the places of recent displacement and upliftment along the North Almora Thrust (NAT) in the Lower Alaknanda Valley of Lesser Garhwal Himalaya. The basic aim of this paper is the identification of the first record sites of recent neo-tectonic activities and associated landforms along N-S trending transverse faults. The study indicates that active movements along thrust plane and transverse fault were active. The evidences of neo-tectonic activity along strike slip transverse faults have been observed in the Quaternary sediments exposed 2nd and 3rd level river terraces. Structurally, quaternary sediments were gently folded and at places show warping and gentle dips with prominent thrust planes. It may be concluded that neo-tectonic movements along NAT were prominent during 15–9 ka and show the recurrence of tectonic activity. The minor structural features on Quaternary sediments are folding, faulting, thrusting, warping and tilting. The final results of the study indicate that the neo-tectonic movements along NAT were more active during 15–9 ka. It is concluded that NAT in Srinagar section has been reactivated from time to time.
KeywordsNeo-tectonics North Almora Thrust Transverse fault Quaternary period River terraces
- 2.Kothyari, G.C.: Quaternary reactivation of NAT in Central Kumaun: implication to neotectonic rejuvenation, Lesser Himalaya, Uttarakhand. Unpublished Ph.D. thesis, submitted to Kumaun University, Nainital in Geology, pp. 75–91 (2007)Google Scholar
- 3.Rajendra, C.P., Rajendra, K.: The status of central seismic gap: a perspective gap on the spatial and temporal aspects of the large Himalayan earthquakes. Tectonophysics 395, 29–39 (2005)Google Scholar
- 4.Sati, S.P., et al.: Geomorphic indicators of neotectonic activity around Srinagar (Alaknandada Basin),Uttarakhand. Curr. Sci. 92(6), 824–829 (2007)Google Scholar
- 5.Tyagi, A.K., et al.: Identifying areas of differential uplift using steepness index in the Alaknanda Basin, Garhwal Himalaya, Uttarakhand. Curr. Sci. 97(25), 1473 (2009)Google Scholar
- 6.Valdiya, K.S.: Reactivation of Terrane defining boundary thrust in central sector of the Himalaya: implications. Curr. Sci. 81, 1418–1430 (2001)Google Scholar