This 1973 comprehensive catalogue examines the many presences and absences found within the characteristics of different types of quartz grain sand. The focal point of this work is the numerous micrographs, selected specifically for their ability to demonstrate the many variations in the surface textures of quartz grain sand.

These proceedings record the results of climate change in many areas which are hyper-arid deserts today but which, almost cyclically, at intervals of thousands or even hundreds of thousands of years, have had a much more humid climate.

Sedimentology has neither been adequately popularized nor This book begins with a consideration of the complex end commonly taught as an interdisciplinary subject, and many product of processes and materials, the sedimentary environ workers in the areas of modem environment studies have very ment. It then proceeds to discuss the processes and materials limited knowledge of sedimentology. Practical Sedimentol themselves. The emphasis is on geological interpretations of ogy (henceforth PS) is designed to provide an introduction and ancient deposits, but most discussions are also relevant to review of principles and interpretations related to sedimentary modem sediments and can be used to predict environmental processes, environments, and deposits. Its companion volume, changes. A basic knowledge of geological jargon is antici Analytical Sedimentology (henceforth AS), provides "cook pated for users of this book; we try to define most of the more book recipes" for common analytical procedures dealing with esoteric terms in context, but if there are additional incom sediments, and an introduction to the principles and reference prehensible terms, refer to Bates and Jackson's Glossary of sources for procedures that generally would be performed by Geology (AGI, 1987). specialist consultants or commercial laboratories. Specialist sedimentologists will find in them useful reviews, whereas sci ACKNOWLEDGMENTS entists from other disciplines will find in them concepts and procedures that may contribute to an expanded knowledge of Many chapter drafts ofPS were critically reviewed by Dr. M.

Papers presented at the conference organized by Central Mining Research Institute in collaboration with Manonmanium Sundaranar University, Tirunelveli, Oct. 26-27, 2005; with reference to India.

Including recent research findings from terrestrial satellite imagery, the study of planetary landscapes, and advances in laboratory work, this also covers the environmental processes involved in desertification and the solution of planning and