Water-Rock Interaction presents new research on the chemical interaction of aqueous fluids with the rock matrix containing them. The contributions come from a wide variety of geologic settings and include groundwater-aquifer reactions, hydrothermal fluids in volcanic and ore deposit environments and water-rock interaction in geothermal areas. The focus is on upper crustal and near surface environments. The presented research comprises field studies as well as experimental work. The book adds new data and understanding to the multifaceted general process of chemical interaction of water and rock. Audience: The book will appeal to hydrologists and hydrogeologists interested in chemical aspects of water, but solid earth geophysicists, geochemists and petrologists with an interest in fluids in the crust will also find new stimulating ideas in this volume.