This festschrift, running into two volumes, attempts to analyse the various aspects of earth system sciences. It presents analytical discourse and multidisciplinary disposition of research vistas in the growth of inter and intrasub-disciplines of earth sciences, including earthquakes and tectonics, landslide hazards, water resources, petrology and geochemistry, applied geomorphology and terrain studies, and geo-environment and climate change. It is of great use to academicians and researchers in the field of earth system sciences.