Geology is the science comprising the study of solid earth, the rocks of which it is composed, and the processes by which they change. Geology can also refer generally to the study of the solid features of any celestial body. This book is intended for the students of graduate level. It provides all the basic concepts and latest information on geology. As the phenomena of evolution is on run so all the relevant fields are affected and ever changing. Author has tried best to gather all the latest information to provide all the update concepts.