Metamorphism and partial melting in ancient orogens II

• Grant number: 16/22627-3
• Support type: Regular Research Grants
• Duration: February 01, 2017 - July 31, 2019
• 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: Edgar Batista de Medeiros Junior ; Frederico Meira Faleiros ; Gergely Andres Julio Szabó ; Gláucia Nascimento Queiroga ; Ian Christopher William Fitzsimons ; Lucelene Martins

Abstract

This research project aims to investigate the tectonic evolution of ancient orogens using the study of metamorphic rocks. Metamorphism and partial melting are direct consequences of the thermal relaxation following the collisional stage in orogens. The shape of the P-T paths, the partial melting reactions and formed parageneses are reflections of tectonic history that the rock underwent, so with the characterization of textures, type of metamorphism and partial melting, determination and calculation intensive variables you can access and infer part of tectonic history of the orogen. Four model regions are chosen for this research, Southern Brasilia Orogen, the Itatins Complex, the Petunia Complex, and part of Araçuaí Origen and its infrastructure. In all units metamorphic rocks will be investigated, which conditions may vary between the green schist and granulite facies. They will be investigated to the determination of the P-T conditions of metamorphic peak, metamorphic paths, partial melting process, textures of mineral growth, behavior of trace elements in minerals in various textural contexts with dating methods using in situ and thermodynamic modeling. With the evolution of the project, it is intended to contribute to the knowledge of the tectonic evolution using for it, knowledge raised with understanding of how occurred the metamorphism and partial melting. (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, 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.

REGIANE ANDRADE FUMES; GEORGE LUIZ LUVIZOTTO; RENATO MORAES; MONICA HEILBRON; SILVIO ROBERTO FARIAS VLACH. Metamorphic modeling and petrochronology of metapelitic rocks from the Luminarias Nappe, southern Brasilia belt (SE Brazil). BRAZILIAN JOURNAL OF GEOLOGY, v. 49, n. 2, p. -, 2019. Web of Science Citations: 0.

TASCO, LIZETH HERNANDEZ; MORAES, RENATO. Evaluation of the contributions of possible sources to the leucosome of the diatexite of Socorro-Guaxupe Nappe, in the Alfenas Region, MG, Brazil. BRAZILIAN JOURNAL OF GEOLOGY, v. 49, n. 1 2019. Web of Science Citations: 0.

YANNE DA SILVA QUEIROZ; GLÁUCIA QUEIROGA; RENATO DE MORAES; VICTOR MATHEUS TAVARES FERNANDES; EDGAR MEDEIROS-JÚNIOR; HANNA JORDT-EVANGELISTA; BERNHARD SCHULZ; JULIA SCHMIEDEL; MAXIMILIANO MARTINS; MARCO PAULO DE CASTRO; CRISTIANO LANA. Pseudosection modeling and U-Pb geochronology on Piranga schists: role of Brasiliano Orogeny in the Southeastern Quadrilatero Ferrifero, Minas Gerais, Brazil. BRAZILIAN JOURNAL OF GEOLOGY, v. 49, n. 3, p. -, 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.