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Metamorphism and partial melting in ancient orogens

Grant number: 13/04007-0
Support type:Regular Research Grants
Duration: September 01, 2013 - February 29, 2016
Field of knowledge:Physical Sciences and Mathematics - Geosciences - Geology
Principal researcher:Renato de Moraes
Grantee:Renato de Moraes
Home Institution: Instituto de Geociências (IGC). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Assoc. researchers: Beatriz Pontes Araújo ; Edward William Sawyer ; Frederico Meira Faleiros ; Gergely Andres Julio Szabó ; Lucelene Martins


This research project aims to investigate the the tectonic evolution of ancient orogens through the study of metamorphic rocks. Metamorphism and partial melting are direct consequences of the thermal relaxation that follows the collisional stage in orogens. The shape of the P-T paths, melting reactions and mineral paragenesis are reflexes of the tectonic history the rock underwent, so the characterization of textures, type of metamorphism and melting, determination and calculation of intensive variables can be used as tools to access and infer part of the tectonic story of orogen. Two model regions are chosen to research, the Southern Brasília Orogen and Itatins Complex. In both units will be investigated metamorphic rocks of green schist to granulite facies, for determination of P-T conditions, metamorphic paths, melting process, textures, mineral growth, behavior of trace elements in minerals in various textural contexts, in situ dating, and thermodynamic modeling. (AU)

Scientific publications (6)
(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)
SANTOS, CAIO A.; WHITE, RICHARD W.; MORAES, RENATO; SZABO, GERGELY A. J. The gabbro to amphibolite transition along a hydration front. JOURNAL OF METAMORPHIC GEOLOGY, v. 39, n. 4 DEC 2020. Web of Science Citations: 0.
SANTOS, CAIO ARTHUR; MORAES, RENATO; SZABO, GERGELY A. J. A comparison between phase diagram modelling of metamafic rocks and experimental and independent thermobarometric data. LITHOS, v. 340, p. 108-123, SEP 2019. Web of Science Citations: 0.
ROCHA, BRENDA CHUNG; MORAES, RENATO; MOLLER, ANDREAS; CIOFFI, CAUE RODRIGUES. Magmatic inheritance vs. UHT metamorphism: Zircon petrochronology of granulites and petrogenesis of charnockitic leucosomes of the Socorro-Guaxupe nappe, SE Brazil. LITHOS, v. 314, p. 16-39, AUG 2018. Web of Science Citations: 7.
DA MOTTA, RAFAEL GONCALVES; MORAES, RENATO. Pseudo- and real-inverted metamorphism caused by the superposition and extrusion of a stack of nappes: a case study of the Southern Brasilia Orogen, Brazil. INTERNATIONAL JOURNAL OF EARTH SCIENCES, v. 106, n. 7, p. 2407-2427, OCT 2017. Web of Science Citations: 3.
ROCHA, B. C.; MORAES, R.; MOLLER, A.; CIOFFI, C. R.; JERCINOVIC, M. J. Timing of anatexis and melt crystallization in the Socorro-Guaxupe Nappe, SE Brazil: Insights from trace element composition of zircon, monazite and garnet coupled to U-Pb geochronology. LITHOS, v. 277, n. SI, p. 337-355, APR 15 2017. Web of Science Citations: 18.
FALEIROS, F. M.; MORAES, R.; PAVAN, M.; CAMPANHA, G. A. C. A new empirical calibration of the quartz c-axis fabric opening-angle deformation thermometer. TECTONOPHYSICS, v. 671, p. 173-182, MAR 7 2016. Web of Science Citations: 16.

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