This volume provides a global treatment of historical and regional geomorphic work as it developed from the end of the nineteenth century to the hiatus of the Second World War. The book deals with the burgeoning of the eustatic theory, the concepts of isostasy and epeirogeny, and the first complete statements of the cycle of erosion and of polycyclic denudation chronology.

The geology of an area covering 3,900 square miles in the northeastern part of Mojave Desert, including mountain ranges 6,000-7,000 feet in altitude.