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Microstructures, kinematics and thermometry of mylonitic rocks of the western portion of the Taxaquara Shear Zone - Pilar do Sul, SP

Grant number: 17/08919-4
Support type:Scholarships abroad - Research Internship - Scientific Initiation
Effective date (Start): July 20, 2017
Effective date (End): September 06, 2017
Field of knowledge:Physical Sciences and Mathematics - Geosciences - Geology
Principal researcher:Ginaldo Ademar da Cruz Campanha
Grantee:Bruno Vieira Ribeiro
Supervisor abroad: Roberto Weinberg
Home Institution: Instituto de Geociências (IGC). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Research place: Monash University, Australia  
Associated to the scholarship:16/22051-4 - Microstructures, kinematics and thermometry of milonitic rocks of the Western portion of the Taxaquara shear zone - Pilar do sul, SP, BP.IC


The Taxaquara Shear Zone was one of the first regional transcurrent structures of importance identified in the Ribeira Belt, having been assigned to it great importance in the tectonic subdivision of the Belt. Despite the importance that has been attributed to it, the Taxaquara Shear Zone has been very little addressed in specific studies since its original definition for nearly half a century. In this period a number of new concepts and research techniques have been developed, become urgent re-evaluation of this structure. This study aims to characterize from field criteria and microstructural the predominant kinematics Taxaquara Shear Zone in Pilar do Sul (SP), relating temperature and deformation mechanisms of milonitic rocks, through the analysis of mineral assemblages microstructures, crystallographic axes of quartz frames-c and vorticity analysis. The results will be useful to better understand the Shear Zone System in Southeastern Brazil.This research internship at Monash University (Melbourne, Australia), will focus on as crystallographic preferred orientation of quartz, through c-axis measurement using new techniques such as the Fabric Analyzes technique. This method is not used in Brazil and it will help the further analysis such as vorticity studies and to understand the shear zone kinematics. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
RIBEIRO, B. V.; FALEIROS, F. M.; CAMPANHA, G. A. C.; LAGOEIRO, L.; WEINBERG, R. F.; HUNTER, N. J. R. Kinematics, nature of deformation and tectonic setting of the Taxaquara Shear Zone, a major transpressional zone of the Ribeira Belt (SE Brazil). TECTONOPHYSICS, v. 751, p. 83-108, JAN 20 2019. Web of Science Citations: 1.

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