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Rating:  Summary: An intelligent, well-detailed introduction to caves Review: This book explains the geology and biology of caves, and how they have been used by human beings. The authors explain the details very well, drawing upon lots of interesting examples of caves from around the world and providing useful illustrations, charts, and photographs throughout the book.In the section on limestone formations, they explain why most limestone caves have been formed by slowly moving water in a thin horizontal zone directly below the water table. They examine scallop formations, carbon dioxide content, calcite solubility and other factors. (Sandstone caves, sea caves and lava tubes are covered just briefly.) There is some good coverage about water movement through caves, the growth of speleotherms, and how to date caves and cave deposits. There is a table provided that lists the secondary minerals found in limestone caves and the caves they can be found in. You will also learn about cave temperatures, relative humidity, and how different karst formations are related to the nature and distribution of the soil in different climatic zones. There is also a section about the many cave dwelling micro-organisms, troglobites, and vertebrates. It explains their evolution, adaptation to the cave environment, and how they fit into the food chain.
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