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Metamorphism of retroeclogites from the Passos Nappe, Southern Brasília Orogen
(2021-12-01)
High-pressure metamafic rocks from the Passos Nappe, Southern Brasília Orogen, have been traditionally interpreted as highly retrogressed eclogites, even though no reliable P-T conditions were available thus far. In this ...
U–]Pb zircon ages and metamorphic conditions of mafic granulites from the basement of the southern Brasilia Orogen, Campinas-SP region
(2019-06-01)
In the southern Brasília Orogen, slices of an intensively reworked Paleoproterozoic basement occur. These are partially covered by a Neoproterozoic sequence of high-metamorphic grade, corresponding to the Socorro–Guaxupé ...
Ultra-high temperature metamorphism in the Guaxupe Complex: a lower crust segment
(Soc Brasileira Geologia, 2020-01-01)
The area is located at the northern boundary of the Guaxupe Complex, which corresponds to the northern domain of the Socorro-Guaxupe Nappe, in the Southern Brasilia Orogen, close to the Varginha Shear Zone. This study ...
Growth mechanism of garnet megaporphyroblasts of the Passos Nappe, Southern Brasília Orogen, Brazil
(2020-10-01)
The Passos Nappe is an important tectonic unit of the Southern Brasília Orogen with inverted metamorphism, grading from greenschist facies at the base to granulite facies in the upper part. In the central part, of amphibolite ...
Geodynamic evolution of the Southern Brasília orogen (SE Brazil): new petrochronological insights from UHT and HP metamorphic rocks
(Universidade Federal de Minas GeraisUFMG, 2018-01-12)
The Southern Brasília orogen is one of the orogens formed around the São Francisco paleocontinent during the West Gondwana amalgamation. Its formation is interpreted to have been the result of the subduction of the passive ...
Characterization and evolution of hedenbergite-hastingsite-biotite-garnet orthogneiss in the region of the alterosa paleo-suture zone, southern portion of southern brasÍlia orogenCaracterização e evolução de hedenberguita-hastingsita-biotita-granada ortognaisse na região da zona de paleo-sutura de alterosa, porção sul do orógeno brasília meridional
(2020-01-01)
In the southwest of Minas Gerais state, Santa Cruz do Prata district region, inserted in a context of high-pressure rocks attributed to the Araxá Group, in the southern portion of the Southern Brasília Orogen, an occurrence ...
The potential for using metagreywacke to study metamorphism of amphibolite facies conditions: a comparison study within the Luminárias Nappe, Southern Brasília Orogen (Southeastern Brazil)
(2021-10-01)
Metagreywacke is a very common rock type in orogenic settings. It occurs in several domains within the Neoproterozoic Southern Brasília Orogen, that registers convergent events related to the Western Gondwana formation. ...
On the crystallization conditions of the Neoproterozoic, high-K calc-alkaline, Bragança Paulista-type magmatism, southern Brasília Orogen, SE Brazil
(Sociedade Brasileira de Geologia, 2019)
Petrochronology of high-pressure granulite facies rocks from Southern Brasília Orogen, SE Brazil: Combining quantitative compositional mapping, single-element thermometry and geochronology
(2022-04-01)
We use a combination of several in situ techniques to assess the P-T-t path of high-pressure granulites from the Passos Nappe in the Southern Brasília Orogen (SE Brazil). Quantitative element mapping and single-element ...