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Contrasting P-T-t paths of basement and cover within the Búzios Orogen, SE Brazil – Tracking Ediacaran-Cambrian subduction zones
(2022-01-01)
Deeply eroded collisional orogens show complex structural and inverted stratigraphic relations with juxtaposition of rock stacks from distinct crustal levels, origins and ages, hence with contrasting P-T-t paths during ...
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 ...
Episodic construction of the early Andean Cordillera unravelled by zircon petrochronology
(Nature Research, 2021)
The subduction of oceanic plates beneath continental lithosphere is responsible for continental growth and recycling of oceanic crust, promoting the formation of Cordilleran arcs. However, the processes that control the ...
Metamorphic modeling and petrochronology of metapelitic rocks from the Luminárias Nappe, southern Brasília belt (SE Brazil)
(Sociedade Brasileira de Geologia, 2019)
Constraining the timing and evolution of a long-lived tectonic boundary: An example from the Early Paleozoic, Argentina
(Pergamon-Elsevier Science Ltd, 2021-04)
The Guacha Corral shear zone (GCSZ) is one of the most prominent crustal-scale shear zones in the Eastern Sierras Pampeanas of Argentina, juxtaposing two different metamorphic terranes: the eastern hanging wall, which was ...
The Late Paleozoic Tectonometamorphic Evolution of Patagonia Revisited: Insights From the Pressure-Temperature-Deformation-Time (P-T-D-t) Path of the Gondwanide Basement of the North Patagonian Cordillera (Argentina)
(American Geophysical Union, 2019-06)
Combined field structural analysis with in situ electron probe microanalysis Th-U-Pb monazite dating, petrologic, and microstructural data provides a reconstruction of the pressure-temperature-deformation-time (P-T-D-t) ...
Metamorphic modeling and petrochronology of metapelitic rocks from the Luminárias Nappe, southern Brasília belt (SE Brazil)
(Sociedade Brasileira de Geologia, 2019)
Abstract The Luminárias Nappe was formed in the agglutination of West Gondwana. A high-pressure metamorphic gradient oblique to the geological contacts is recorded in metapelitic rocks from this Nappe. In the northern ...
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 ...
Petrochronology of high-pressure amphibolite to granulite facies rocks from the Southern Brasília Orogen: examples from the Carrancas and Araxá Groups
(Universidade Estadual Paulista (Unesp), 2021-08-09)
O Orógeno Brasília Meridional registra ambientes tectônicos de subdução e colisão asso- ciados à colagem do Gondwana Oeste, como resultado de um limite convergente entre as Placas do Sãofranciscana Paranapanema. Nessa ...