The question of how and when continents have grown and were recycled remains a fundamental topic in Earth sciences. A key time interval is the Archaean to Palaeoproterozoic, when plate tectonics most likely began. In the period ca. 2.4-2.2 Ga there is an apparent shortage of evolved igneous rocks, which has led to the postulation of a “global magmatic shutdown”. In this scenario, a paucity of juvenile addition into the crust is plausibly caused by a widespread lithospheric stagnation, characteristic of episodic mantle overturn. However, I am working on rare occurrences of such rocks in the Mineiro Belt, Brazil which represents a unique opportunity. This project uses a broad assemblage of accessory minerals, including zircon, titanite and apatite. U-Pb, Lu-Hf, and O isotopic analysis of zircons from Paleoproterozoic granitoids, in addition to detrital zircons, will provide new constraints on geodynamic evolution. Trace elements in both titanite and apatite (as the host mineral or inclusions) will provide direct access to the crystallisation history of plutonic rocks through mineral-inclusion equilibrium phases

EMAIL:  hugo_hsm@hotmail.com

PUBLICATIONS:

Moreira, H.S.; Leão L.P., 2010. Quantidade ideal de material rochoso “in natura” adequado à concentração de minerais pesados no LOPAG/DEGEO/EM/UFOP. In: XLV Congresso Brasileiro de Geologia, Belém – PA. Abstract: PAP002740

Moreira, H.S.; Leão L.P.,2010. Determinação da quantidade ideal de material rochoso máfico e ultramáfico adequado à concentração de minerais pesados para determinação geocronológica U-Pb. In: Seminário de Iniciação Científica (SIC) – UFOP.

Moreira, H.S., 2011. O potencial Metalogenético das rochas da Suíte Ribeirão dos Motas. In: Seminário de Iniciação Científica (SIC) – UFOP.

Moreira, H.S.; Romano R.; Lana C.; Alkmim F., 2012. Estabilização da porção sul do Cráton São Francisco, mediante um longo período de magmatismo potássico. In: XLVI Congresso Brasileiro de Geologia, Santos – SP. Abstract: PAP009198

Lana C., Farina F., Albert C., Moreira H.S., Hippertt J.P., 2014. The Archaean and Palaeoproterozoic evolution of the Southern São Francisco Craton: clues from de Quadrilátero Ferrífero, Minas Gerais. 9th South American Symposium on Isotope Geology. Accepted.

 
 

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