Now showing items 1-10 of 396
Denudation history of the Bocaina Plateau, Serra do Mar, southeastern Brazil: Relationships to Gondwana breakup and passive margin development
(Gondwana Research, 2010-11-01) [Artigo]
The Bocaina Plateau, which is situated on the eastern flank of the continental rift of southeastern Brazil, is the highest part of the Serra do Mar. Topographic relief in this area is suggested to be closely related to its ...
Caracterização magnetométrica do Sill de Limeira-SP
(Geociências, 2015) [Artigo]
The purpose of this study is to characterize the geological subsurface structure of the diabase sill of the Paraná Magmatic Province intruded in the Itararé Group, located near the city of Limeira, in the east-central ...
Magnetometric exploration in intrusive basic with evidence of gold in northern region of the Camaquã Sedimentary Basin (RS)
(REM. Revista Escola de Minas, 2015) [Artigo]
This study involved magnetometric exploration in the region of São Sepé (RS), southern Brazil, to evaluate the potential for gold mineralization in a gabbro using evidence previously obtained from the geochemical exploration ...
Re-Os isotope and highly siderophile element systematics of the Parana continental flood basalts (Brazil)
(Earth and Planetary Science Letters, 2012-07-01) [Artigo]
Basalts of the Parana continental flood basalt (PCFB) province erupted through dominantly Proterozoic continental crust during the Cretaceous. In order to examine the mantle source(s) of this major flood basalt province, ...
Análise de fraturamentos para determinação de áreas instáveis na faixa de dutos Osvat/Osplan - São Sebastião, em São Paulo
(Revista Brasileira de Geociencias, 2012-09-01) [Artigo]
The present work aimed at characterizing geological features that identify areas with high ruptibility (fracturing) in the Osvat/Osplan pipeline in São Sebastião, São Paulo. The analysis of ruptile geological structures ...
O Grupo Canastra em sua área-tipo, região de Tapira, sudoeste do estado de Minas Gerais
(Geologia USP: Serie Cientifica, 2012-08-01) [Artigo]
This work aimed at describing the Neoproterozoic evolution of a Southern Brasília Fold Belt segment, in Tapira area (southwest of Minas Gerais state, Brazil), using detailed geologic mapping. This area, the Canastra Group ...
Isotopic characterization of the metabasites and amphibolites of the Acungui and Setuva Groups of the Ribeira Belt
(Geologia USP: Serie Cientifica, 2002-12-01) [Artigo]
Pb, Rb, Sr, Sm and Nd isotope analyses were carried out on amphibolitic rocks from Campo Largo (PR), Rio Branco do Sul (PR) and Adrianópolis (PR) and for the metabasite from Adrianópolis and Apiai (SP), all belonging to ...
The U-isotopes modeling in aquifers from Pocos de Caldas plateau, Brazil
(Environmental Geology, 2005-08-01) [Artigo]
U-modeled groundwater residence times were estimated by changes in U-234/U-238 activity ratio (AR) and U content of groundwaters from Pocos de Caldas city situated at the Pocos de Caldas alkaline massif, Brazil. The estimated ...
Geologia e Caracterização Tecnológica do Minério de Manganês da Mina Córrego do Cocho, Itapira (SP)
(Geologia USP: Serie Cientifica, 2011-12-01) [Artigo]
The objects of this study are three manganese ore deposits and one mine derived from lateritic weathering of gondites (spessartine quartzites). These deposits are associated with Mn-rich garnet metasediments of the Itapira ...
Evolution of the Central Ribeira Belt, Brazil: Implications for the Assembly of West Gondwana
(Gondwana Research, 2001-12-01) [Artigo]