Nota sobre algunos aspectos de la tectónica del Carbonífero de las sierras de Prades (Prov. de Tarragona)

Some features of the stratigraphy and hercynian tectonic of the Paleozoic rocks-in the Sierra de Prades (prav. of Tarragona) are described. There is a first tectonic phase with development of fracture cleavage in the pelitic rocks; also a system of parallel folds is developed during a second tectonic phase. Afterwards an intrusive mass of Upper Carba- niferous or Permian granite and diorite metamorphosed the Siluric and Carboniferous rocks causing about 1.W m thick- nese hornfels facies racks