Tectonica do Complexo Varginha na regiao de Sao Joao da Boa Vista (SP)
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Tectonics of the Varginha Complex in the Sao Joao da Boa Vista Region, SPAutor
Data de publicação
1990-12-01Tipo
Artigo
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Migmatites, high-grade gneisses and granitoids represent the most important Precambrian rocks of Sao Joao da Boa Vista region. Structures are interpreted as due to low-angle oblique non-coaxial ductile shear, developed under conditions of amphibolite facies. Transcurrent ductile shear zones and associated drags modify the foliation and lineations orientations. A first phase of migmatization related to anatexis seems to be developed before or early during the thermo-tectonic process. A second one is syntectonic, and represents the main regional phase. Joints and faults represent the brittle features, the faults marked by cataclastic rocks and intense retrometamorphism along the main zones. -from English summary
Como citar este documento
Morales, N.; Hasui, Y.. Tectonica do Complexo Varginha na regiao de Sao Joao da Boa Vista (SP). Geociencias, v. 9, p. 35-54. Disponível em: <http://hdl.handle.net/11449/64086>.
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Português
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