Uranium Series Disequilibrium in the Bargmann Property Area of Karnes County,211 Texas

摘要

Historical evidence is presented for natural uranium series radioactive211u001edisequilibrium in uranium bearing soils in the Bargmann property area of Karnes 211u001eCounty on the Gulf Coastal Plain of south Texas. The early history of uranium 211u001eexploration in the area is recounted and records of disequilibrium before milling 211u001eand mining operations began are given. Activity ratios illustrating 211u001edisequilibrium between Radium 226 and Uranium 238 in background soils during 1986 211u001eare listed and discussed. Derivations of uranium mass-to-activity conversion 211u001efactors are covered in detail.