L Himalaya
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Geology of the Nepal Himalaya
This book addresses the geology of the entire Himalayan range in Nepal, i.e., from the Gangetic plain in the south to the Tethyan zone in the north. Without a comprehensive look at the various Himalayan zones, it is practically impossible to fully grasp the processes at work behind the formation and development of the spectacular Himalaya. However, the goal is not merely to document all the scientific ontology but rather to reveal a sound basis for the prevailing concepts. Both the early literature on Himalayan geology and contemporary trends are fully covered. For the first time, the origin, use, and abuse of common Himalayan geological terms such as the Siwaliks, Lesser Himalaya, Main Boundary Thrust, Main Central Thrust, and Tethys are discussed. The book will help readers to progress from a cognitive approach to a constructive one by linking various types of knowledge, such as seeking relations between various geological structures as well as between earlier thoughts or views and contemporary approaches.
The Nature of Geomorphological Hazards in the Nepal Himalaya
The book offers a wide range of research topics that are addressed with the aim of contributing to the knowledge of geomorphological hazards in the Himalaya. It is emphasized the integration of climate-driven morphogenetic and tectonic processes in the Nepal Himalaya as a substantial phenomenon of active collisional orogeny. The extreme dynamics of landform evolution in the Himalayan terranes triggers severe natural hazards and risks. Interdisciplinary research of geomorphological processes and events related to natural hazards in the Nepal Himalaya follows general efforts to reduce geoenvironmental disasters. Visual documentation is of particular importance in the conception of the book, which is intended for specialized researchers as well as students.
Tectonics of the Himalaya
Author: S. Mukherjee
language: en
Publisher: Geological Society of London
Release Date: 2015-09-28
The Himalayan mountain belt, which developed during the India–Asia collision starting about 55 Ma ago, is a dramatically active orogen and it is regarded as the classic collisional orogen. It is characterized by an impressively continuous 2500 km of tectonic units, thrusts and normal faults, as well as large volumes of high-grade metamorphic rocks and granites exposed at the surface. This constitutes an invaluable field laboratory, where amazing crustal sections can be observed directly in very deep gorges. It is possible to unravel the tectonic and metamorphic evolution of litho-units, to observe the mechanisms of exhumation of deep-seated rocks and the propagation of the deformation. Himalayan tectonics has been the target of many studies from numerous international researchers over the years. In the last 15 years there has been an explosion of data and theories from both geological and geophysical perspectives. This book presents the results of integrated multidisciplinary studies, including geology, petrology, magmatism, geochemistry, geochronology and geophysics, of the structures and processes affecting the continental lithosphere. These processes and their spatial and temporal evolution have major consequences on the geometry and kinematics of the India–Eurasia collision zone.