The mainly meta-volcano-sedimentary Vila Nova Group and associated granites constitute separate belts. which formpart of a large paleoproterozoic (mainly rhyacian) province in the Guyana Shield of which northern Brazil forms a part. andthe West African Craton. In Brazil the southwestern Serra do Ipitinga and Serra Tumucumaque-Serra do Navio belts have noobvious geometrical extensions ... https://chefesquipmenters.shop/product-category/oil/