The Windy Belt rift was formed in the Baltic Shield in the Early Proterozoic as a result of the destruction of the continental crust. Investigations of its sedimentary-volcanogenic complex have shown that the belt was formed on the continental crust within the Karelian craton. Sediments and volcanics were formed in an intraplate coastal-marine environment. Reconstruction of the sedimentation sources for clastic formation indicates continental conditions all along the formation of the structure. However, comparison of the section of the Windward Belt with analogous depressions of the Baltic Shield still allows us to question the accepted stratigraphic sequence of its associations.