Aerial gamma Ray and Magnetic Survey: Davenport Quadrangle, Iowa and Illinois. Final Report

摘要

The Davenport quadrangle covers approximately 7000 square miles in the heart of the Midwestern Physiographic Province. Overlying thin Paleozoic carbonates and shales are Quaternary glacial and related deposits that largely mask possible bedrock exposures. The Paleozoics are broadly folded and deformed, but this is not evident at the surface. Quaternary loess dominates the surface. A search of available literature revealed no existing uranium claims or known deposits. A total of 88 uranium anomalies were defined according to the standard interpretation procedures. None of these anomalies were considered significant and all relate to cultural features. Concentrations of K, U, and T are relatively low throughout the area. Magnetic data suggest complexities in the underlying Precambrian. (ERA citation 06:013437)