2015
DOI: 10.18285/geonomos.v23i2.709
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P- T Path Reconstruction in Neoproterozoic Garnet-Bearing Paragneisses From a Metasedimentary Succession of the South Western Araçuaí Orogen, Minas Gerais, Brazil

Abstract: This paper focuses on pressure- and temperature path analyses in paragneisses from a metasedimentary succession (MSS) in the south western Araçuaí orogen. The sampling area is limited by the Abre Campo shear zone (West) and the Rio Doce Magmatic Arc (East). This region is rich in ortho-derived metamorphic basement rocks (Mantiqueira and the Juiz de Fora complexes) and para-derived metamorphic rocks, including paragneisses interlaid by quartzites, which form the MSS. The sampled rocks are mainly compost of quar… Show more

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“…High-grade paragneisses and a huge amount of syn-collisional to late-collisional granites (G2 and G3 supersuites; c. 585-530 Ma), as well as a number of post-collisional intrusions (G5 supersuite, c. 530-480 Ma) characterise the back-arc region in the Rio Doce arc domain (Pedrosa-Soares et al, 2011a;Gradim et al, 2014;De Campos et al, 2016;Melo et al, 2016;Richter et al, 2016). The forearc region shows large areas of the Rhyacian basement (Juiz de Fora and Pocrane complexes), Neoproterozoic paragneisses, and collisional granites (Noce et al, 2007;Degler et al, 2016).…”
Section: Geotectonic Settingmentioning
confidence: 99%
“…High-grade paragneisses and a huge amount of syn-collisional to late-collisional granites (G2 and G3 supersuites; c. 585-530 Ma), as well as a number of post-collisional intrusions (G5 supersuite, c. 530-480 Ma) characterise the back-arc region in the Rio Doce arc domain (Pedrosa-Soares et al, 2011a;Gradim et al, 2014;De Campos et al, 2016;Melo et al, 2016;Richter et al, 2016). The forearc region shows large areas of the Rhyacian basement (Juiz de Fora and Pocrane complexes), Neoproterozoic paragneisses, and collisional granites (Noce et al, 2007;Degler et al, 2016).…”
Section: Geotectonic Settingmentioning
confidence: 99%