Geological Dynamics and Stability in Lansdowne, Garhwal Himalayas: A Litho- structural Perspective

Abstract

This study examines the geological features of the Lansdowne town in the Lesser Himalayas of Uttarakhand, India, where the rocks ranging from Precambrian to Recent are present. The Lansdowne region showcases intricate geological features, encompassing various stages of deformation, and notable compositional changes from augen gneiss to granite as one approaches the town's core. Detailed field analyses of the rock formations and geological structures suggest significant tectonic movements which are marked by the presence of fault lines, joint sets, and gouge zones. The lithological variation from the highly distorted augen gneiss to a more uniform granitic core helps to understand the different tectonic activities and metamorphic conditions in the area. The central part of Lansdowne, which is characterized by uniform granite, shows less intense deformation, suggesting a more stable environment for development. This study highlights the importance of geological stability in urban planning within seismically active regions.