NURE aerial gamma ray and magnetic detail survey: Reading Prong area. Volume I. Narrative report

As a part of the Department of Energy (DOE) National Uranium Resource Evaluation Program, LKB Resources, Inc. has performed a rotary-wing detailed high sensitivity radiometric and magnetic survey of northern New Jersey. The surveyed area consisted of approximately 5936 line miles. The radiometric data were corrected and normalized to 400 feet terrain clearance. The data were identified as to rock type by correlating the data samples with existing geologic maps. In addition, a geochemical evaluation was performed as derived from radiometric and magnetic contour maps and multi-variant analysis methods. Statistics defining the mean and standard deviation of each geologic and geochemical unit together with their corresponding histograms are presented in Volume I. The radiometric and magnetic contour maps, profiles, geochemical and multivariate data are presented in Volume II. The data were analyzed to evaluate the multivariate map and its by-product, the geochemical map. This study indicated that the multivariate map, in its present form is of minimal use because of its complexity. However, the study also showed that the geochemical map can be prepared from the contour maps (KUT, the ratios and the magnetics) using fewer combinations, and that its usefulness is similar to the geological maps. The study further confirmed that most of the metamorphic rocks in the area, and in particular the Byram gneiss are good uranium source rocks and may be good host rocks as well