Produção Nacional
MARCUS VINÍCIUS RODRIGUES MAAS, Claudinei Gouveia de Oliveira, Augusto César Bittencourt Pires, Roberto Alexandre Vitória de Moraes,
Tópico(s): Geological Modeling and Analysis
2003 - Sociedade Brasileira de Geologia | Revista Brasileira de Geociências
Produção Nacional
Marcus Vinícius Rodrigues Maas, Claudinei Gouveia de Oliveira, Augusto César Bittencourt Pires, Roberto Alexandre Vitória de Moraes,
Mineral deposits like those of the Cu-Au-U-ETR-Fe-oxides class are commonly associated with hydrothermal alteration zones that are detectable by airbone geophysical methods. In The Pio IX, Sao Juliao and Fronteiras region (Piaui State), and Campos Sales region (Ceara State) there are copper occurrences in Eo-cambrian molassic basins, and others associated with fault breccias in hydrothermal alteration zones due to Post-Brasiliano granites (550 My) intruded in Mesoproterozoic ortogneisses and metavolcanic ...
Tópico(s): Geophysical and Geoelectrical Methods
2003 - Sociedade Brasileira de Geologia | Brazilian Journal of Geology
Produção Nacional
Leila Márcia Mendes Carvalho, Augusto César Bittencourt Pires, Claudinei Gouveia de Oliveira, Roberto Alexandre Vitória de Moraes, Marcelo de Lawrence Bassay Blum,
The area covered by the Itabira-Ferros Project is located in the lron Quadrangle, State of Minas Gerais, and is known for its emerald occurrences. The area is characterized by greenstone belts (Rio das Velhas Supergroup) and paleoproterozoic iron sequences belonging to the Minas Series, insertedin granitoid bodies (Borrachudos Granite). The development of emerald deposits is attributed to the interaction of pegmatitic fluids with mafic-ultramafic rocks of Rio das Velhas Supergroup. The present study ...
Tópico(s): Geography and Environmental Studies
2006 - Sociedade Brasileira de Geologia | Revista Brasileira de Geociências
Produção Nacional
Leila Márcia Mendes Carvalho, Augusto César Bittencourt Pires, Claudinei Gouveia de Oliveira, Roberto Alexandre Vitória de Moraes, Marcelo de Lawrence Bassay Blum,
The area covered by the Itabira-Ferros Project is located in the Iron Quadrangle, State ofMinas Gerais, and is known for its emerald occurrences. The present study applies geophysical characteristics, using airborne gamma-ray spectrometric data and their integration with geology, to determine probable zones of emerald mineralization. The total count gamma-ray image allows the definition of the spectrometric framework ofthe area. Analyses ofthe elements K, Th, and U distribution were conducted together ...
Tópico(s): Mineralogy and Gemology Studies
2006 - Sociedade Brasileira de Geologia | Revista Brasileira de Geociências
Edmund Cecil Harder, Rollin T. Chamberlin,
... Crossref reports the following articles citing this article:Alexandre Raphael Cabral, Armin Zeh, Fernando Roberto Mendes Pires, Jefferson Ferreira Silva, Vitalino Elizeu Ferreira Carmo, Miguel ...
Tópico(s): Geochemistry and Elemental Analysis
1915 - University of Chicago Press | The Journal of Geology
... org/10.1590/S2236-89062010000100009Luiz Cláudio Ribeiro-Rodrigues, Claudinei Gouveia de Oliveira, Gunther Friedrich The Archean BIF- ... doi.org/10.1590/S0101-81752003000200026F.R.M. Pires Distribution of hard hematite ore at the Quadrilátero ...
Tópico(s): Amphibian and Reptile Biology
1906 - University of Chicago Press | The Journal of Geology