This text investigates the formation, distribution, and environmental significance of duricrusts within tropical and subtropical geomorphological systems. Andrew Goudie, a prominent geographer, synthesizes decades of field observations and laboratory analysis to explain how these hardened crusts develop in varying climatic conditions. The book provides a comprehensive framework for understanding the chemical and physical processes that lead to the accumulation of minerals like iron, silica, and calcium carbonate at or near the earth's surface.

Experts recognize this work as a foundational reference for geomorphologists studying arid and semi-arid landforms. The text is noted for its technical rigor and remains a standard resource for understanding the complex interaction between climate and soil development.