Filipe Altoe Temporim
@geologia.fct.ufg.br
Faculdade de Ciências e Tecnologia
Universidade Federal de Goiás
RESEARCH, TEACHING, or OTHER INTERESTS
Geophysics, Geology, Geochemistry and Petrology, Earth-Surface Processes
Scopus Publications
Scopus Publications
Kargean Vianna Barbosa, Diego Lang Burak, Carlos Eduardo Veiga de Carvalho, Filipe Altoé Temporim, Danilo de Lima Camêlo, and Alexandre Rosa dos Santos
Springer Science and Business Media LLC
F. A. Temporim, Ricardo Ivan Ferreirae da Trindade, Marcos Egydio‐Silva, Tiago Valim Angelo, Eric Tohver, Caroline Cibele Soares, Lucas Pequeno Gouvêa, Julio Cesar Mendes, Silvia Regina Medeiros, Antônio Carlos Pedrosa‐Soares,et al.
Wiley
AbstractFeaturing 3 000‐km‐long large and hot orogen, the Mantiqueira Province provides a rare opportunity to study the process of gravitational collapse at mid to deep crustal levels. Distinct but contemporary (~500 Ma) post‐collisional intrusions show structures and anisotropy of magnetic susceptibility (AMS) fabrics related to their emplacements, recording different flow patterns. In southern deep‐seated intrusions, ellipsoidal‐shaped roots with gabbroic‐to‐hybrid cores surrounded by granitic rocks show concentric patterns of AMS fabrics that cut across the NE‐trending regional foliation. In contrast, northern intrusions, exposed as the upper sections of batholith‐size bodies of coarse‐grained granite emplaced at the shallow to mid‐crust, show general NS‐trending magnetic fabrics roughly parallel to strike of the orogen and the regional foliation of host rocks. These contrasting magnetic patterns from shallow to deeper crust suggest vertical magma migration from the overthickened orogenic core to be emplaced across its thinner stretched flanks during the gravitational collapse of the orogenic edifice.
Guilherme Loriato Potratz, Mauro Cesar Geraldes, Edgar Batista de Medeiros Júnior, Filipe Altoé Temporim, and Maria Virgínia Alves Martins
MDPI AG
The Araçuaí and Ribeira orogens have been studied for decades, and recently, these two orogens were described as the Araçuaí–Ribeira Orogen System. Despite much work investigating this orogenic system, some issues, such as the connection between the two orogens, are still not fully understood. This work aimed to present unpublished Lu-Hf data for the Santa Angélica Intrusive Complex (SAIC) and for the host rocks that are part of the Rio Negro magmatic arc, as well as to present U-Pb ages for these rocks, thus contributing to the understanding of the geological processes that acted in the transition zone between the Araçuaí and Ribeira orogens. Two samples were collected corresponding to the magmatic arc and six samples from the Santa Angélica Intrusive Complex. The zircon grains were separated from the samples and subjected to geochronological (U-Pb) and isotopic (Lu-Hf) analysis by laser ablation-induced coupled plasma mass spectrometry (LA-ICP-MS). The geochronological data for the host rocks indicate a crystallization age of ca. 595 Ma. In contrast, the Hf isotopic data point to at least two magmatic sources, one crust, and one mantle. The geochronological data obtained for the SAIC rocks show three age peaks. The first peak (537 ± 5 Ma) coincides with the process of crustal anatexis and possibly marks the beginning of the generation of magmas associated with post-collisional magmatism. The second peak (510 ± 5 Ma) registers the apex of crystallization of the SAIC, and the third peak of ages (488 ± 7 Ma) marks the upper limit of the magmatism in the SAIC. The SAIC isotopic data point to at least two crustal components and a mantle component (juvenile).
U.D. Bellon, G.F. Souza Junior, F.A. Temporim, M.S. D'Agrella-Filho, and R.I.F. Trindade
Elsevier BV
G.F. Souza Junior, R.I.F. Trindade, F.A. Temporim, U.D. Bellon, L.P. Gouvêa, C.C. Soares, C.A.D. Amaral, and V. Louro
Tectonophysics Elsevier BV
U.D. Bellon, M.S. D'Agrella-Filho, F.A. Temporim, G.F. Souza Junior, C.C.V. Soares, C.A.D. Amaral, L.P. Gouvêa, and R.I.F. Trindade
Journal of Structural Geology Elsevier BV
F.A. Temporim, U.D. Bellon, M. Domeier, R.I.F. Trindade, M.S. D'Agrella-Filho, and E. Tohver
Precambrian Research Elsevier BV
F. A. Temporim, R. I. F. Trindade, E. Tohver, C. C. Soares, L. P. Gouvêa, M. Egydio‐Silva, C. A. D. Amaral, and G. F. Souza
American Geophysical Union (AGU)
AbstractThe Araçuaí Orogen (AO) has been interpreted as a Neoproterozoic example of a large, “hot” orogen, based on a broad zone (250 km) of midcrustal metamorphic assemblages with a long, 70‐Myr history of crustal melting and episodic magmatism throughout the late Neoproterozoic and earliest Paleozoic. Here, we present results of U‐Pb sensitive high‐resoution ion microprobe (SHRIMP) zircon dating and detailed anisotropy of magnetic susceptibility (AMS) study on a late Cambrian, bimodal pluton related to final period of collapse of the AO. New U‐Pb zircon ages constrain the crystallization age of different suites within the Santa Angélica Pluton, 506 ± 3 Ma for the early felsic phase and 498 ± 5 Ma for the mafic core. New AMS data indicate that the emplacement of the Santa Angélica Pluton corresponds to two coupled plutons with concentric structures arrayed about a twin, bull's eye pattern. During the final stages of intrusion, upward relative movement of the northeastern lobe exposed the deeper levels of the intrusion, relative to the more shallowly eroded southwestern lobe. These observations suggest that magma emplacement was controlled by magma buoyancy forces, with little influence of regional tectonic stress. This behavior contrasts with the well‐defined, tectonic‐controlled fabrics of coeval plutons occurring to the north which was still hot, therefore highlighting the contrasting thermal evolution between different sectors of the orogen during its final stages.
Tiago Valim Angelo, Marcos Egydio-Silva, Filipe Altoé Temporim, and Marina Seraine
Elsevier BV
Filipe Altoé Temporim, Fábio Furlan Gama, Waldir Renato Paradella, José Cláudio Mura, Guilherme Gregório Silva, and Athos Ribeiro Santos
Springer Science and Business Media LLC
Filipe Altoé Temporim, Fábio Furlan Gama, José Cláudio Mura, Waldir Renato Paradella, and Guilherme Gregório Silva
FapUNIFESP (SciELO)
ABSTRACT: Carajás Mineral Province, Amazon region, is the most important one in Brazil. Vale S.A. Company has the right to operate in the area of the N5E mine. The work is conducted on rock alteration products of low geomechanical quality related to sandstones, siltstones, and a lateritic cover. In order to monitor ground deformation, 33 TerraSAR-X images covering the period of March 2012-April 2013 were used in the investigation. An interferometric synthetic aperture radar (InSAR) approach based on permanent scatterer interferometry (PSI) using an interferometric point target analysis algorithm was applied. Results demonstrated that most of the area was considered stable during the time span of the image acquisition. However, persistent scatterers (PSs) with high deformation rates were mapped over a landfill probably related to settlements. To validate the PSI data, graphs were generated with the displaced information based on topographic measurements in the field. The graphs showed that the surface deformations during TSX-1 runway coverage are within the miner’s safety threshold and do not present a risk of major problems. The PSI data provided a synoptic and detailed view of the deformation process that affects the mining complex without the need of field campaign or instrumentation.
Guilherme Gregório Silva, José Claudio Mura, Waldir Renato Paradella, Fabio Furlan Gama, and Filipe Altoé Temporim
SPIE-Intl Soc Optical Eng
Abstract. Persistent scatterer interferometry (PSI) analysis of a large area is always a challenging task regarding the removal of the atmospheric phase component. This work presents an investigation of ground movement measurements based on a combination of differential SAR interferometry time-series (DTS) and PSI techniques, applied on a large area of extent with open pit iron mines located in Carajás (Brazilian Amazon Region), aiming at detecting linear and nonlinear ground movement. These mines have presented a history of instability, and surface monitoring measurements over sectors of the mines (pit walls) have been carried out based on ground-based radar and total station (prisms). Using a priori information regarding the topographic phase error and a phase displacement model derived from DTS, temporal phase unwrapping in the PSI processing and the removal of the atmospheric phases can be performed more efficiently. A set of 33 TerraSAR-X (TSX-1) images, acquired during the period from March 2012 to April 2013, was used to perform this investigation. The DTS analysis was carried out on a stack of multilook unwrapped interferograms using an extension of SVD to obtain the least-square solution. The height errors and deformation rates provided by the DTS approach were subtracted from the stack of interferograms to perform the PSI analysis. This procedure improved the capability of the PSI analysis for detecting high rates of deformation, as well as increased the numbers of point density of the final results. The proposed methodology showed good results for monitoring surface displacement in a large mining area, which is located in a rain forest environment, providing very useful information about the ground movement for planning and risk control.