Amazon.com description: Product Description: HISTORICAL GEOLOGY teaches students basic geologic principles as well as how scientists apply these principles to unravel Earth's history. Wicander and Monroe present a balanced overview of both the geological and biological history of Earth as a continuum of inter-related events. These events reflect the underlying principles and processes that have shaped our planet. The authors also explain the historical development of these basic principles and processes, and their importance in deciphering Earth history. Three major themes - time, evolutionary theory, and plate tectonics - are woven together throughout the book. These themes help students link essential material to enhance their understanding of historical geology.