Prof. Mahyra Tedeschi

I am Assistant Professor of Mineralogy at Federal University of Minas Gerais (UFMG). My research centers around Geochronology and Petrology, and their associated use in Petrochronology. It involves combined field observations, petrography, compositional maps, thermobarometry and phase equilibrium modeling, geochronology, isotopic geochemistry, and abundance of trace elements in minerals and rocks in order to reconstruct pressure-temperature-time paths to unfold the timing and rates of geological processes towards understanding the geodynamic evolution of orogens. 

I have obtained my MSc degree focused on Geochronology and Geochemistry applied to Tectonics (UFMG – 2013) and acquired my Ph.D with a major in Petrochronology and Geodynamic evolution in 2018 at UFMG, with a one-year research internship at the University of Bern (UniBe), Switzerland. Since 2020, I’ve been investigating nanogranitoids applying Raman spectroscopy and experimental petrology, with an internship at the Universität Potsdam. Currently, my research focuses on the formation and evolution of ultra-high pressure and ultra-high temperature rocks.

ResearchGate | Lattes

Mariana Madeira

Mariana Madeira is currently a PhD candidate at Federal University of Minas Gerais (UFMG). She is undergraduate in Geology Engineer and master’s degree in Geology at University Federal of Ouro Preto (UFOP). Her research interests lie in the field of Tectonics, Structural geology and Stratigraphy especially applied to investigating processes related to geodynamic and tectonic evolution of the ancient orogenic belts. Currently, she focuses on deformational evolution of orogenic belts investigating processes of shear zones development and escape tectonics in NE Brazil (Borborema Province).

Lattes | Research Gate

Hugo Oliveira

Undergraduate student in Geology at UFMG, Brazil, with interests in mineralogy, petrography, and isotopic geology. He was a scientific initiation researcher at the Petrochronics research group in an investigation that aimed to examine zircons from a granulite of the Brasília orogen with the help of tools such as Raman spectroscopy, cathodoluminescence, photomicrography images, and U-Pb geochronology. From these tools, we tried to correlate the zircons structures with their CL domains and their ages.
He is currently a Crew Petrochronics member, assisting the group in scientific dissemination.

Lucas Schiavetti

Geologist by the University of São Paulo (USP) with a Masters degree by the University of Campinas (UNICAMP) focused on high-grade metapelites from the hot Araçuaí Orogen (SE Brazil). Main interests include: Neoproterozoic orogenic belts, migmatites, high-grade metamorphism, thermodynamic modelling, multi-system geochronology and code/scripting. Soon-to-be phD student.

Otavio Sant’ Anna G. Silva

Otavio Sant’ Anna G. Silva is a geologist and a M.Sc. student at the São Paulo State University (UNESP). His research is focused on the metamorphic modeling of high-temperatures granulites by integrating Thermodynamic Models (Forward Modelling), Trace Elements Thermobarometry, and Monazite Geochronology. His main interest are the geodynamic processes that lead to high-grade metamorphism and its influence on the evolution of the southern portion of the Brazilian Belt (southeast Brazil).


Lucas Tesser

Lucas R. Tesser is currently a Ph.D. student at the University of São Paulo (IGc-USP) and he works in the metamorphic evolution of the South Borborema Orogeny, NE-Brazil. Previously in the MSc, he developed his research focused on the first described occurrence of ultrahigh-temperature (UHT) metamorphic rocks in the Borborema Province by applying metamorphic modelling and zircon petrochronology (see Tesser et al., 2021 JMG). In parallel, he collaborates with research in the Kaoko Belt (Namibia/Barrovian-type metamorphism), Togo-Mali ( Earth’s oldest UHP metamorphic rocks), and Rio Negro-Juruena province (southern Amazonian Craton).

ResearchGate | Lattes | Google Scholar

Brenda Rocha

Assistant professor in the Department of Mineralogy and Tectonics at the Institute of Geosciences, University of São Paulo (IGc-USP), since July 2020. My research is focused on the investigation of igneous and metamorphic processes related to the formation of orogenic belts, continental break-up and evolution of the continental crust, combining field observations with petrology, geochemistry and isotope geochronology and was responsible for pioneering petrochronology studies in Brazil using monazite, zircon and titanite. The PhD degree was obtained in 2016 at the University of São Paulo (IGc-USP), with a 1-year research internship at the University of Kansas (USA) applying in-situ dating techniques in high-grade metamorphic rocks in the southern Brasília orogen, using a petrochronology approach. 

Additionally, I have conducted a post-doctoral research at the University of São Paulo (IGc-USP) on the environmental impact of the Paraná-Etendeka Large Igneous Province (LIP) magmatism and applied high-precision U-Pb age determinations using the techniques of chemical abrasion, isotope dilution, thermal ionization mass spectrometry when I was a visiting researcher at the University of Geneva (Switzerland), to investigate the temporal correlation between the Paraná-Etendeka LIP volcanism with a period of environmental disturbance in the Lower Cretaceous.

Regiane Fumes

I am a geologist. I have obtained a PhD degree (2021) and a master’s degree (2017) in geosciences and environment at São Paulo State University. My work was focused on the characterization of the metamorphic P–T–t paths of high- pressure (HP) metamorphic rocks from Southern Brasília Orogen (Luminárias and Passos nappes) and their implication on the tectonic evolution of the orogen. My PhD supervisor was George Luvizotto. I have experience in metamorphic modeling using pseudosections, quantitative compositional mapping, trace element thermobarometers (Ti-in-quartz and Ti-in-rutile), U-Pb-ThT monazite dating (by EPMA).
Since 2017 I have been a substitute professor at São Paulo State University in the disciplines of structural geology, geotectonic, general geology and field practices.

ResearchGate | Lattes

Deniro Felipe

Final-year undergraduate student at Federal University of Minas Gerais (UFMG). Main interests include: ultra-high-temperature metamorphism, geochronology and geochemistry. Currently working on radiation damage in zircon and apatite fission track thermochronology.


Guto (Paulo Paiva-Silva)

Guto is currently a Master’s student at the Federal University of Ouro Preto (MG/Brazil), working in the establishment of metamorphic conditions and P-T-t paths for metapelitic rocks from the Quadrilátero Ferrífero, SE Brazil. Researcher and enthusiast in petrochronology, with key-interests related to phase equilibrium modelling, geochronology and trace elements studies, altogether with machine learning and teaching-centred skills.

ResearchGate | Lattes

Our Collaborators

Kathryn Cutts

Kathryn Cutts is currently a post-doctoral researcher at UERJ working on the metamorphic and temporal evolution of the Ribeira fold belt and its connection to the Sao Francisco craton. She previously worked at UFOP as a postdoc studying the metamorphic evolution of rocks of the SFC and adjacent domains (see Cutts et al 2018 GR, 2019 GF, and 2020 PR); and as a postdoc at Stellenbosch University, South Africa where she investigated Archean metamorphism in the Barberton granite greenstone belt. She completed her Ph.D. at the University of Adelaide in 2012.
Her main research interests involve utilizing a variety of techniques (including petrochronology!) to interrogate polymetamorphic and/or Archean terrains in order to understand the tectonic evolution and relationships between various terrains, and what metamorphism can tell us about the evolution of plate tectonics on Earth.

Vitor Barrote

Vitor Barrote is a Posdoctoral researcher at the AG Geochemistry group at Freie Universität Berlin. His research interests lie in the field of isotopic geochemistry and geochronology, with a special interest in technical development and the use of multidisciplinary studies applied in unorthodox ways in order to solve unusual problems. He has been involved in Economic Geology for the good part of his academic journey, from his master degree at UFMG (Brazil) to his PhD at the John de Laeter Centre, Curtin University, where he studied VHMS deposits from Western Australia. He believes that mineral deposits are rare records of amplified geological processes, and could hold fundamental keys to the understanding of major questions that every geoscientist asks themselves: the history of Earth’s evolution, the spark of life and what makes our planet so special.

Bruno Ribeiro

Geologist and Master of Science graduated by the University of Sao Paulo and Doctor of Philosophy (PhD) graduated by Monash University (Australia). Current Research Fellow at the Timescales of Mineral Systems Group from Curtin University (Australia) focusing on novel geochronological methods (in-situ Rb/Sr and Lu/Hf), multi-mineral U–Pb geochronology and metamorphic petrology to investigate the tectonic evolution of Precambrian terranes in Brazil, Australia and Greenland.

Researchgate | Google scholar | ORCID

Silvia Volante

Silvia Volante completed her BSc and MSc studies at the University of Milan, in Italy. During her MSc she carried out a field-based thesis project on the tectono-metamorphic evolution of the Argentera–Mercantour Massif, one of the external massifs of the Western Alps, which encompasses relicts of a Variscan suture zone. In September 2016, she joined Prof. Zheng-Xiang Li’s Earth-Dynamics Research Group at Curtin University in Perth (Western Australia) to start a field-based PhD project that investigated the tectonic evolution of northern Queensland during the Palaeo–Mesoproterozoic in order to better understand the role of NE Australia during the evolution of the Precambrian supercontinent Nuna (Columbia). Silvia received her PhD in December 2020. Since May 2020, Silvia is a Junior researcher at the Ruhr- University Bochum in the Tectonic and Resources Research Group in Bochum (Germany). Silvia’s current research focuses on understanding Early Earth processes in Archean terranes by applying a multi-disciplinary approach which combines metamorphic and igneous petrology with geochemistry and geochronology.

Researchgate | Google scholar

Luckas Maia

Undergraduate student in geology at the Federal University of Minas Gerais (UFMG), Brazil, since March 2018. Mineralogy tutor for two years. He is currently a member of Crew Petrochronics and a scientific initiation researcher at the Professor Manoel Teixeira da Costa Research Center (CPTMC), focused on the investigation of eclogites from Togo using techniques such as Raman spectroscopy and photomicrography. The objective is to correlate the spectra obtained to the chemical composition and crystalline structure of the minerals.
He is interested in mineralogy, geochemistry, petrology, and petrography.


Former Members

Cristina Araújo

Geology Ph.D. student at the Federal University of Minas Gerais (UFMG), Brazil, Chemist, Geologist and Geology Master. Her research is focused on the geochronology and Hf isotopic signatures from igneous and metamorphic zircons in order to provide petrological information about the evolutionary history of the rocks. Her main interest is to understand the geodynamic evolution of the Southeastern Brazilian orogens combining petrography, geochemistry, isotopic geology, and regional geology.


Marco Pinheiro

Geologist graduated from the Federal University of Ouro Preto (2005), with a Master’s and a phD from the same university (2008 and 2013). Post-Doctorate (2015/2016) from the Russian Academy of Sciences (SB-RAS), working with petrology of mafic and ultramafic rocks. Marco also worked with mineral prospecting (gems and gold) in private companies from 2005 to 2008; and then as a Professor of Mineral Research at CEFET-OP in the first half of 2009. In July 2009, he joined the Geological Survey of Brazil (CPRM/SUREG- BH) where he has been working as a full-time researcher. He was Secretary-Director of the Brazilian Society of Geology, in its nucleus of Minas Gerais (2015-2016 and 2017-2018), where he also held the position of President Director (2019-2020).

ResearchGate | Lattes | Google Scholar


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