Geology of Nepal

The movement of  Indian plate continues  north relative to Asia at the rate of approximately 50 mm (2.0 in) per year. This is approximately twice the speed at which human fingernails grow, which is very fast given the size of the blocks of Earth's crust involved.[original research?] As the strong Indian continental crust subducts beneath the relatively weak Tibetan crust, it pushes up the Himalayan Mountains. This collision zone has accommodated huge amounts of crustal shortening as the rock sequences slide one over another.so nepal is one of the earthquake hazardous area while being one of the cute and beautiful country. 

The research based on a study published in 2014, of the Main Frontal Thrust, on average a great earthquake occurs every 750 ± 140 and 870 ± 350 years in the east Nepal region.A study from 2015 found a 700-year delay between earthquakes in the region. The study also suggests, that because of tectonic stress transfer, the earthquake from 1934 in Nepal and the 2015 earthquake are connected - following a historic earthquake pattern.

Erosion of the Himalayas is a very important source of sediment, which flows via several great rivers: the Indus, Ganges, and Brahmaputra River systems to the Indian Ocean