Course: Geomorphology Presented by Venkatesh Emani
About me M. Sc geography from University of Madras Three years of experience in teaching Geography and Economy for civil services Interests: Love teaching, watching cricket and some long drives . Follow me on Unacademy: https://unacademy.in/user/venkateshemani
Weathering # It refers to mechanical disintegration and chemical decomposition of rocks at their places (in situ) Elements of weather and climate act over the earth materials Nature and Magnitude varies from place to place It is controlled by complex geological, climatic, topographic and . vegetative factors Weathering processes prepare the way for formation of not only regolith and soils, but also erosion and mass movements.
Erosion It is removal of soil, sediment, regolith and rock fragments from the landscape. - It is carried out by natural agents called agents of erosion Four aspects of erosion: Acquisition of loose material Wearing away of bedrock through impact of transit material - Mutual wear and tear of rock particles during transit Transportation Significance : Relief degrades i.e landscape is worn down
Continuation Erosion is responsible for continuous changes that the earth's surface is undergoing. Weathering helps erosion, but it is not a precondition Weathering, mass-wasting and erosion are degradational processes. Weathering helps eosio, but it is not a pre condition
Deposition Deposition is a consequence of erosion It is laying down of eroded material under favourable conditions It is done by agent of erosion after transporting it for some distance It is an aggradational process.( raise in the level of land because of # It is laying down of eroded material under favou sediment deposition)