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Showing 1 to 4 of 4 for “"Borborema Province"”.
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Dynamic Topography of the Borborema Province, South America
The Borborema Province is located in the northeast corner of the Brazilian Shield. It is characterized by a positive long-wavelength free-air gravity anomaly of ∼ +30 mGal, which is consistent with sub-crustal dynamic support. This inference is corroborated by the presence of positive residual …
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Epeirogeny of South America and Evolution of Parnaíba Basin, Northeast Brazil
… velocities correlate with high plateaux of the Borborema Province and the Central Andean Altiplano. Admittance analyses of these regions are used to gauge dynamic support. Admittance of $>20$ mGal km$^{-1}$ at wavelengths $>$ 500 km suggests partial dynamic support. In this context, inverse …
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Petrografia, litoquímica, química mineral e termobarometria de rochas cálcioalcalinas de alto K de textura porfirítica, ediacaranas, no extremo NE da Província Borborema (NE do Brasil)
… six bodies are located in the northeast of the Borborema Province, NE Brazil. The plutons are represented by monzogranites wich have porphyritic facies with phenocrysts of K-feldspar with sizes between 5 and 15 cm. The K-feldspar, plagioclase and quartz are the dominant paragenesis; while the …
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Association of S-type and I-type granitoids in the Neoproterozoic Cameroon orogenic belt, Bafoussam area, West Cameroon : geology, geochemistry and petrogenesis
… of western Gondwanaland such as the neighbouring provinces of Nigeria and the Central African Republic, as well as in the Borborema Province of northeastern Brazil. This supports the previous hypothesis that the Central African fold Belt including Cameroon, Nigeria and the Central African Republic …