Weathering is an important phenomenon of the geochemical cycle as it contributes to the relief formation It corresponds to a general term applied to physical and chemical changes suffered by rocks as a consequence of their exposition to different conditions of humidity and temperature In this book the authors present topical research in the study of the types processes and effects of weathering Topics discussed include the use of weathering indices in rock research geomorphic processes in the last glacial age understanding chemical weathering in affecting the Earth s surface weathering of dimensional granite stones used as cladding and the weathering process and desert pavement development