This book is an introductory text for all earth scientists interested in learning about the quantitative description of geological problems. In its style, the book is aimed at the field oriented geologist that wants to begin with learning about the quantitative description of problems. The new edition, revised and extended, features even more illustrations and maps, about 100 corrections of scientific problems, improvement of geomorphology section and shortening of several sections which obviously are too complicated. Graduate students and scientists will find the book a good starting point for a quantitative treatment of their data.