Geology and structural control of the Cutia Prospect, Serra Leste, Carajás Mineral Province, Pará, Brazil / Geologia e controle estrutural do Garimpo Cutia, Serra Leste, Província Mineral de Carajás, Pará, Brasil
DOI:
https://doi.org/10.34117/bjdv5n1-980Keywords:
Structural Control, Gold in Shear Zone, Cutia ProscpectAbstract
The Cutia Prospect is an occurrence of gold located at the Serra Leste, Carajás Mineral Province. This occurrence is related to magnetite/hematite breccia zones, hosted by hydrothermally altered metavolcano-sedimentary rocks in contact wich felsic ignous rock. The contact has a structural control and hosts oxidized quartz veins and mineralized siliceous breccias. This structure has features of a shear zone with characteristics of a brittle-ductile environment, showing a high degree of maturity, represented by breccias and faults, anastomosed foliation and porphyroclast deformation with the formation of kinematic indicators. Structures such as ruptured and rotated layers, tension gashes, well developed foliation and high angle are evidence of a transcurrent shear zone. Exploration activities in the area allowed to verify that the gold was removed from a transition zone of a gossanic sequence where the oxidized zone of the gossan comprises a superficial ferruginous crust.
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