PALEOTECTONIC FEATURES OF SICHUAN-GUIZHOU N-S-TRENDING STRUCTURAL BELT

The Sichuan-Guizhou N-S-trending Structural Belt whose basement shows a two layer structure composed of lower ‘competent’ strata and upper incompetent ‘soft’ strata consists of a series of simple or composite folds and accompanied faults in which were involved strata from Late Paleozoic to Jurassic.The structures in the cover rocks were mainly controlled by the underlying paleotectonic framework.Paleouplifts and paleodepressions in the belt bagan to occur in early Cambrian and developed gradually from the south to the north.