ESTUDO DA DEFORMAÇÃO EM METAVULCANITOS ÁCIDOS DA SERRA DO SAPO, CORDILHEIRA DO ESPINHAÇO MERIDIONAL, MG

Resumo

The region of Conceição do Mato Dentro and Serro is characterized by the presence of polydeformed porphyritic metarhyolites and metarhyodacites wich are imbricated within the tectonic framework of the Southern Espinhaco Range. In these occur a sub parallel mylonitic foliation and an intense estretching lineation. The non-coaxial aspect of the deformation is distinguished by the generalized assymetry of some deformed elements(fi.e., the assymetric pressure shadows and the S-C structural planes). Such structural features permit the assumption of crustal shearing responsable for the ridge structure.