This book is an introductory text for all earth scientists interested in learning about the quantitative description of geological problems. It contains chapters on heat flow, sedimentary basin modelling, mechanics of continental deformation, PT path modelling, geomorphology and mass transfer and more. In its style, the book is aimed at the field oriented geologist that wants to begin with learning about the quantitative description of problems. Graduate students and scientists will find the book a good starting point for a quantitative treatment of their data. 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. Update and modernisation of several sections, for example the section on pressure and updated references.