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This book discusses the relationship between geology and fighting during the American Civil War. Terrain was largely determined by the underlying rocks and how the rocks weathered. This book explores the difference in rock type between multiple battlegrounds and how these rocks influenced the combat, tactics, and strategies employed by the soldiers and their commanding officers at different scales.
Comprising approximately 730 square miles and over half a million residents, the Lehigh Valley is the third largest metropolitan area in Pennsylvania, encompassing the cities of Allentown, Bethlehem, and Easton. Much is known about the industrial history of the valley (home to Bethlehem Steel, Mack Trucks, and Crayola crayons). But few have discovered the valley's natural history: the "endless" Blue Mountain, the spectacular raptor migrations, the wetlands and watercourses. The Lehigh Valley explores the land and the natural forces and human history that have altered it. From boulder fields to water gaps, from sinkholes to limestone caves, the valley has long had a powerful influence on the lives of its residents--and the people have had a similarly powerful effect on the valley; the text features brief profiles of some of the people who have shaped the environmental history of the area. The authors also include directions to historical and natural sites, and the book's illustrations aid visitors and naturalists in identifying the region's abundance of flora and fauna. The Lehigh Valley is a unique combination of narrative natural history, identification handbook, and travel and hiking guide. Mountain laurel, red-tailed hawks, dusky salamanders: The Lehigh Valley not only shows us what resides in this beautiful and bountiful valley, but also explains why. This illustrated guide surveys the valley's ecology, geology, history, and agriculture--and is complemented by maps and drawings of the area's plant and animal life. The Lehigh Valley will appeal to area residents, amateur naturalists, and Pennsylvania visitors with an interest in natural history.
Land use decisions in karst terrains can have immediate and serious impacts on the local landscape and groundwater resources. The existing literature on karst and land use can be very difficult to locate in the journals of any of a half-dozen different disciplines. This book brings the interdisciplinary knowledge together in one place, in a format that academics and professionals alike will find accessible, informative and useful. Based on an examination of existing regulations, the experiences and opinions of planners and land use professionals, and quantitative analysis of publicly-available data, the book explores how human settlement patterns and urban systems in karst terrains are affected by land use regulations intended to protect karst resources. The book pays particular attention to the questions of whether these regulations will have a noticeable impact on density and on opportunities for economic growth and development in communities that choose to implement them. This analysis serves as the basis for a regulatory framework that may be used to understand the workings of land use regulations in karst terrains, and to aid in the development of such regulations in the future.