Abstract
This work presents the multiscale study of structural lineaments that affect alkaline rocks associated to the Lages Dome, situated in the Eastern edge of the Parana Basin, Santa Catarina state, Brazil. We analyzed satellite images (Landsat-TM) and Shuttle Radar Topography Mission (SRTM) project and carried out structural studies of alkaline rocks in quarries of the dome. The results show correlation between the lineaments extracted from the images and faults analyzed in quarries, especially around the NS directions (NNE to NNW) and EW (ENE to ESE) and, secondarily, NE and NW. These structures are largely related to reactivation of basement discontinuities. The first two directions correspond to dextral and sinistral transcurrent faults, respectively. Formation of these structures is compatible with a field of tension with axis oriented NE-SW, whose age ranges from the Late Cretaceous and Tertiary.
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