Humid Landforms

Landforms created by running water dominate the land surface of earth. However, although the role of water is seen everywhere, it is seen at its best in those regions where the climates are wet enough to support a forest vegetation with a continuous canopy. The seasonal fluctuations in the character of precipitation with snow in winter and rain in summer which characterize cool temperate forest climates and the legacies of recent past cold periods in high latitudes means that the landforms of the humid tropics should be regarded as the "normal" or "type" features due to erosion by running water.This discussion of humid landforms, together with J. A. Mabbutt's volume "Desert Landforms" completes a series of seven volumes on systematic geomorphology. It attempts to break with traditional approaches and to discuss humid landforms from the standpoint of the humid tropics. In addition, it seeks to demonstrate that the processes creating and destroying landforms are also those that regulate biotic activity at the earth's surface. The approach followed in this book is to describe the processes affecting the evolution of landforms in terms of the circulations of energy, water and materials before introducing the complication of legacies of different ages from the past. Theories of landform evolution are briefly reviewed in the final chapter.

This unique book is dedicated to helping promote geoheritage, geoconservation, and geoparks in Africa and the Middle East. Local, regional, global and thematic case studies including a geoheritage toolkit are used to illustrate the scope and depth of geoheritage and highlight some current geoparks and aspiring candidates in Africa, the Middle East, China , Europe,and Australia. This special issue mainly consists of the proceedings of the First International Conference on Geoparks in Africa and Middle East (FICGAME) held in, El Jadida, Morocco in 2011. The conference, hosted by the Faculty of Sciences of Chouaib Doukkali University, was organized by the African Geoparks Network and the African Association of Women in Geosciences incollaboration with the UNESCO Cairo Office.

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.

Geomorphology can be defined simply as the study of landforms. Landforms are the result of the interaction between what Ritter (1978) has called the driving and resisting forces. The driving forces or processes are the methods by which energy is exerted on earth materials and include both surface, geomorphological or exogenous processes and subsurface, geological or endogenous processes. The resisting forces are the surface materials with their inherent resistances determined by a complex combination of rock properties. Stated in these simple terms it would be expected that both sides of the equation be given equal weight in syntheses of landform evolution. However, this has not been the case. Until about the 1950s, geomorphology was mainly descriptive and concerned with producing time-dependent models of landscape evolution. Although the form of the land was the main focus, there was little detailed mention of process and scant attention to the properties of surface materials. There were, of course, exceptions. In the late 19th century G.K. Gilbert was stressing the equilibrium between landforms and processes. Many hydrologists were examining the detailed workings of river 'systems and drainage basins, culminating in the classic paper of Horton (1945).

Granite Landforms provides a systematic, coherent, and comprehensive account and analysis of granite landforms. It examines granite forms and their genesis; the morphology of granite exposures; the nature of the materials from which granitic rocks have evolved; and the weathering processes near the Earth’s surface. It also describes major landforms and assemblages, as well as the minor features that have evolved on the major hosts. Organized into four parts encompassing 12 chapters, this book begins with an overview of granite, including their characteristics, occurrences, and composition. It then discusses the factors that influence the weathering of granitic rocks and considers boulders and inselbergs, the all-slopes topography in granite, granite plains and rock basins, granite forms associated with steep slopes, and scarp foot depressions. The reader is also introduced to the piedmont angle, grooves or flutings, caves and tafoni, split rocks, cracked blocks and plates, and the role of climate in the development of landforms on granitic outcrops. Geologists, geomorphologists, geology students, and anyone interested in geology will find this book extremely useful.