This unique addition to reference literature provides an introduction to the major concepts and contemporary issues that are essential for students of environmental science and environmental studies to know. With over 200 entries authored by world-class names like Anthony Brazel, John Day and Edward Keller, this text is divided into six sections: Environmental Science, Environments, Paradigms & Concepts, Processes & Dynamics, Scales & Techniques, and Environmental Issues.
Glaciation refers to the processes involved with covering of parts of Earth with land bound moving masses of ice known as glaciers. Throughout Earth history, there have been several major Ice Ages or glaciations that have been identified by study of the geologic record. The earliest of these glaciations occurred several billion years ago and the best-studied glaciation or Ice Age is the Pleistocene glaciation that has been ongoing for approximately the last one million years. The geologic record in the Northern Hemisphere suggests that during that time there have been about 14 major advances of glacial ice that spread outward and to the south, covering the northern parts of Europe and North America. The major cycle of glaciations is about 100,000 years, with minor ...