Not available.
Not available.
The Corupá Massifi outcrops in the N-NE region of Santa Catarina State, occupying a semi-ring shaped area of 50 Km², being intrusive in gneissic-granulitic rocks of the Luis Alves microplate, in the southernmost end of the Serra do Mar Province, which is made up by neoproterozoic A-Type syenites and granites. The massif is constituted by syenitic rocks, that comprehend six petrographic facies, as well as granitic, dioritic and hybrid rocks, besides monzodioritic to monzonitic enclaves associated to the rosy syenite of medium granulation. The green-coloured syenite presents glanulation varying from medium from to coarsed-grained. The supersatured, hypersolvus green-coloured alkali-feldspar syenite (5 <1C <15) is constituted by hedenbergitic clinopyroxene, calcic to sodic-calcic amphibole and fayalitic olivine. The rosy-coloured varieties (5
50) is saturated, with hedenbergitic clinopyroxene, ferrohortonolitic olivine, biotite, ilmenite, magnetite, apatite and zircon. Hypersolvus alkali-feldspar granites (lC -~ 5) are subordinated, and they appear mainly in the central areas of the syenitic ring. They present, among the mafic minerals, sodic-calcic to sodic amphibole, chevkinite, zircon, apatite and fluorite. Dioritic equigranular rocks of medium granulation (10
WARNING - Viewing this document is conditioned on your acceptance of the following terms of use:
This document is only for private use for research and teaching activities. Reproduction for commercial use is forbidden. This rights cover the whole data about this document as well as its contents. Any uses or copies of this document in whole or in part must include the author's name.
Publishing Date
2015-11-03