John S. Havens Scott C. Christenson 1998 This is a collection of five papers intended to summarize the results of an assessment of the ground-water quality of the Central Oklahoma Aquifer. The papers include a summary of investigations, the diagenetic history of Permian rocks in the aquifer, a geochemical characterization of solid-phase materials, a summary of geochemical and geohydrologic investigations of the Central Oklahoma Aquifer, and a summary on naturally occurring trace substances that contaminated many wells completed in the aquifer. application/pdf 10.3133/wsp2357A en U.S. Geological Survey Ground-water-quality assessment of the Central Oklahoma aquifer, Oklahoma: Results of investigations reports