Metamorphism and partial melting in ancient orogens

• Grant number: 13/04007-0
• Support Opportunities: Regular Research Grants
• Start date: September 01, 2013
• End date: February 29, 2016
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geology
• Principal Investigator: Renato de Moraes
• Grantee: Renato de Moraes
• Host Institution: Instituto de Geociências (IGC). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• City of the host institution: São Paulo
• Associated researchers: Beatriz Pontes Araújo ; Edward William Sawyer ; Frederico Meira Faleiros ; Gergely Andres Julio Szabó ; Lucelene Martins

Abstract

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

(14)

(The scientific publications listed on this page originate from the Web of Science or SciELO databases. Their authors have cited FAPESP grant or fellowship project numbers awarded to Principal Investigators or Fellowship Recipients, whether or not they are among the authors. This information is collected automatically and retrieved directly from those bibliometric databases.)

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. (13/04007-0, 12/22380-7, 10/11152-8, 14/05563-6)

SANTOS, CAIO A.; LUVIZOTTO, GEORGE L.; MORAES, RENATO; FUMES, REGIANE A.; ZACK, THOMAS. Metamorphism of retroeclogites from the Passos Nappe, Southern Brasilia Orogen. Journal of South American Earth Sciences, v. 112, n. 2, DEC 2021. (16/22627-3, 15/05230-0, 13/04007-0)

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. (16/22627-3, 13/04007-0, 12/22380-7, 14/05563-6)

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. (13/04007-0, 15/04487-7)

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. (13/04007-0)

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, p. 19-pg., 2017-04-15. (13/04007-0, 10/11152-8, 14/05563-6, 12/22380-7)

MOTTA, RAFAEL G.; FITZSIMONS, IAN C. W.; MORAES, RENATO; JOHNSON, TIM E.; SCHUINDT, SHEILA; BENETTI, BEATRIZ Y.. Recovering P-T-t paths from ultra-high temperature (UHT) felsic orthogneiss: An example from the Southern Brasilia Orogen, Brazil. Precambrian Research, v. 359, JUL 1 2021. (16/22627-3, 13/04007-0, 15/22355-0, 16/10276-1)

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. (13/04007-0, 16/22627-3)

MOTTA, RAFAEL GONSALVES; MORAES, RENATO. Refining metamorphic-time paths with deformation conditions: The exhumation history of the southernmost part of Brasilia Orogen, Brazil. Journal of South American Earth Sciences, v. 152, p. 12-pg., 2024-12-21. (15/22355-0, 16/22627-3, 13/04007-0, 16/10276-1)

MOTTA, RAFAEL G.; MORAES, RENATO; FITZSIMONS, IAN C. W.; VILALVA, FREDERICO CASTRO JOBIM; BARROS, RENATA FERREIRA; SOUZA, ZORANO SERGIO; MARIMON, RODRIGO SCHWANTES. Charnockite magmatism from partial melting of UHT granulites: metamorphic modelling and geochemical insights from the southern Brasilia Orogen, Brazil. LITHOS, v. 522, p. 14-pg., 2026-02-01. (16/22627-3, 16/10276-1, 15/22355-0, 13/04007-0)

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. (16/22627-3, 13/04007-0)

PAVAN, M.; SAWYER, E. W.; MORAES, R.; FALEIROS, F. M.. Partial melting of granodiorite: insights from ediacaran granulite-facies metamorphism in Southern Brazil. JOURNAL OF PETROLOGY, v. 62, n. 7, p. 29-pg., 2021-07-01. (13/04007-0)

JULIAO, EDUARDO LOPES; MORAES, RENATO; FALEIROS, FREDERICO MEIRA; DA MOTTA, RAFAEL GONCALVES; QUIROZ VALLE, FRANCY ROXANA; LEAO LOPES, LEONARDO BRENGUERE. The role of deformation-assisted by water influx on partial melting of a granite protolith, and its role in the evolution of southwestern Sao Francisco Craton margin, Brazil. Journal of South American Earth Sciences, v. 112, n. 1, DEC 2021. (18/10012-0, 16/22627-3, 13/04007-0)

PAVAN, MAURICIO; MORAES, RENATO; SAWYER, EDWARD. Changes in the composition of anatectic melt and its complementary residue by forward-modelling using THERMOCALC. LITHOS, v. 396, SEP 2021. (13/04007-0)