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Title: Aerial gamma ray and magnetic survey: Uncompahgre Uplift Project, Salina Quadrangle, Utah

Technical Report ·
OSTI ID:6206874

The quadrangle lies entirely within the Colorado Plateau Physiographic Province. It includes a large part of the San Rafael Swell and smaller parts of the Monument and Circle Cliffs Uplifts. A thick sequence of Mesozoic and Paleozoic sedimentary rocks overlie the Precambrian basement over the entire quadrangle. Tertiary volcanics of the high Plateaus Volcanic Area overlie Paleozoic and Mesozoic rocks in the western 1/4 of the quadrangle. More than 240 uranium mines and prospects are documented in the quadrangle. Most deposits are in the Morrison and Chinle Formations. Almost all of them are one of a variety of peneconcordant deposits which occur in sedimentary beds and which lack features commonly associated with deposits of hydrothermal origin. Such deposits are commonly believed to have formed by precipitation of uranium from circulating meteoric and/or connate water. A total of 181 anomalies in the uranium channel meet the minimum requirements as defined in the Interpretation Methods section of Volume I of this report. These anomalies occur in 43 different map units. A minimum of 11 anomalies are related to known mineralized areas. Probable cultural sources account for at least 11 anomalies. Magnetic Data clearly distinguishes between areas of thick and thin cover over the precambrian basement. The volcanics of the High Plateaus Volcanic Area are also clearly distinguishable by the magnetic data.

Research Organization:
GeoMetrics, Inc., Sunnyvale, CA (USA)
DOE Contract Number:
EY-76-C-13-1664
OSTI ID:
6206874
Report Number(s):
GJBX-95(79)(Vol.2)(Salina)
Country of Publication:
United States
Language:
English