RECONNAISSANCE FOR URANIUM IN THE ANTOFAGASTA AREA, PROVINCE OF ANTOFAGASTA, CHILE

摘要

The Antofagasta area, in the Province of Antofagasta, Chile, was investigated in September and August 1958 by two field parties of the U. S. Atomic Energy Commission and the Instituto de Investigaciones Geologicas de Chile, who were working under a cooperative agreement between the two governments. The purpose of the investigation was to examine the area for the possible occurrence of commercial deposits of uranium.nBedrocks of the greater part of the area are Jurassic volcanics and Cretaceous sediments intruded by at least two phases of the Andean diorite complex of Middle Cretaceous age. Small remnants of Tertiary sands and gravels and widespread Quaternary alluvium cover the broad intermontane valleys.