REGIONAL DISTRIBUTION AND ESTRUCTURAL CONTROL OF THE GOLD OCCURRENCES/DEPOSITS IN THE GOIÁS MASSIF AND BRASÍLIA BELT

Abstract

The distribution of gold occurrences/deposits in the Goias Massif and Brasilia Belt reflects the tectonic controls that operated during their geologic evolution. Their distribution shows three main regional trends: northwest-southeast, northeast-southwest and north-south, which correspond to tectonic discontinuities generated during the Brasiliano event. Since the regional structural features are an important control for the location of the main gold occurrences/deposits in both massif and belt, further studies of the regional tectonic regime and the establishment of structural models for these geotectonic units are essential to mineral exploration programs for gold in central Brazil.