West Gondwana
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Metamorphic modeling and petrochronology of metapelitic rocks from the Luminárias Nappe, southern Brasília belt (SE Brazil)
Abstract The Luminárias Nappe was formed in the agglutination of West Gondwana. A high-pressure metamorphic gradient oblique to the geological contacts is recorded in metapelitic rocks from this Nappe. In the northern portion, the metamorphic peak conditions are at high-pressure lower-amphibolite facies at 580 ± 4°C and ca. 0.9 GPa (Chl + Ky + St + Ms + Q
Braz. J. Geol.. Publicado em: 06/06/2019
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2. Conservation of geosites as a tool to protect geoheritage: the inventory of Ceará Central Domain, Borborema Province - NE/Brazil
ABSTRACT The Ceará Central Domain, in the northern Borborema Province/NE Brazil, encompasses important geological records (geosites) which allow understanding a relevant period of the Earth’s evolution, mainly associated to Neoproterozoic Brazilian/Pan-African Cycle and West Gondwana amalgamation, besides Neoarchean to Ordovician records. The presented ge
An. Acad. Bras. Ciênc.. Publicado em: 2017-12
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3. Structural evolution and tectonic setting of the Porongos belt, southern Brazil
The SW–NE-striking Porongos belt, located between juvenile Neoproterozoic rocks in the west and the Dom Feliciano belt, characterized by intense reworking of older crust, in the east, comprises a greenschist to amphibolite-facies metavolcano-metasedimentary succession (Porongos sequence) of unknown age with some exposures of Palaeoproterozoic gneisses (Enc
Publicado em: 2011
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4. Análise da deformação pós-Rifte na Bacia do Araripe, Nordeste do Brasil
The Araripe Basin is located over Precambrian terrains of the Borborema Province, being part of Northeast Brazil inner basins. Its origin is related to the fragmentation of the Gondwana supercontinent and consequently opening of South Atlantic during early Cretaceous. The basin has a sedimentary infill encompassing four distinct evolution stages, comprising
Publicado em: 2010
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5. Complexo ofiolítico Quatipuru, Pará, Brasil
Os tratos oceânicos existentes entre os blocos continentais descendentes do supercontinente Rodínia são registrados na Faixa Araguaia por meio de corpos ofiolíticos. Tais corpos frequentemente não apresentam a clássica pseudo-estratigrafia de ofiolitos, sendo representados principalmente por peridotitos mantélicos serpentinizados e derrames basáltico
Publicado em: 2009
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6. Cráton do São Franscisco, kimberlitos e diamantes
The São Francisco Craton is a large stable area in the eastern portion of South America. Its basement comprises Archean terrains that were reworked and amalgamated during Paleoproterozoic tectonic events and later on affected marginally by the Neoproterozoic Brasiliano orogeny, during the amalgamation of West Gondwana. In this work the geological evolution
Publicado em: 2007