[PDF] Top 20 Braz. J. Geol. vol.46 número1

... Mauro Daniel Rodrigues Bruno Instituto Tecnológico de Micropaleontologia – itt Fossil, Universidade do Vale do Rio dos Sinos (UNISINOS), Cidade de São Leopoldo (RS), Brasil. Welcome to [r] ... See full document

... It should also be recalled that the Aptian Northeast Brazilian Seaway was not a direct consequence of the con- tinental breakup, being unrelated directly to the South Atlantic opening. he primitive South Atlantic has ... See full document

... he São Sebastião and Marizal formations were the subject of previous studies, which made possible the comparison of Ground Penetrating Radar survey to previous stratigraphic studies i[r] ... See full document

... Fretwell P., Pritchard H.D., Vaughan D.G., Bamber J.L., Barrand N.E., Bell R., Bianchi C., Bingham R.G., Blankenship D.D., Casassa G., Catania G., Callens D., Conway H., Cook A.J., Corr H.F. J., Damaske D., Damm ... See full document

... Imagens de biotita-muscovita-quartzo xisto: (A) aspecto macroscópico dos xistos com xistosidade deinida por muscovita e quartzo; (B) textura lepidoblástica marcada po[r] ... See full document

... he proposed paleogeographic reconstruction comprises several elongated, shallow, branched gulf-like tongues connecting the Western Tethys with interior (Parnaíba, Araripe, Recôncavo, [r] ... See full document

... A irst model that takes into consideration the four evidential layers (ASA, h/K ratio, elevation and slope) for the whole study area permits inference on possibilities for supergene n[r] ... See full document

... Likewise, a negative excursion fol- lowed by moderately positive values is also observed in the late Ediacaran upper Polanco Formation (Arroyo del Soldado Group, Uruguay), which is als[r] ... See full document

... he granites occur close to the borders of the pluton, in contact with quartz blocks and the metasedimentary host (Fig. 2). hey are deformed, with oriented maic minerals. E-W trending aplitic dikes of quartz monzonitic ... See full document

... Faria D.A., Ruiz A.S., Matos J.B., Sousa M.Z.A., Lima G.A., Moacir J.B.M. 2014. Geology geochemistry and geochronology (U-Pb) of the Rio Fortuna Gneiss – Serra do Baú Intrusive Suite – Paraguá Terrane – SW Amazonian ... See full document

... Finally, we would like to thank Professor Umberto Cordani for his eforts in helping create and further develop the Geochronological Research Center at Universidade de São Paulo, and als[r] ... See full document

... Li Z.X., Bogdanova S.V., Collins A.S., Davidson A., De Waele B., Ernst R.E., Fitzsimons I.C.W., Fuck R.A., Gladkochub D.P., Jacobs J., Karlstrom K.E., Lu S., Natapov L.M., Pease V., Pisarevsky S.A., Thrane K., ... See full document

... But, from the end of the Oligocene to the beginning of the Late Miocene, both the Purus Arch and sedimentary basins were the focus of sub- sidence and sedimentation, with the depositio[r] ... See full document

... Silva L.C., Armstrong R., Noce C.M., Carneiro M., Pimentel M.M., Pedrosa-Soares A.C., Leite C., Vieira V.S., Silva M., Paes V., Cardoso- Filho J. 2002. Reavaliação da evolução geológica em terrenos pré- cambrianos ... See full document

... Rocks in the area of São Gabriel da Cachoeira and the Içana River, in NW Brazil, are well within the Rio Negro-Juruena province, and very likely have primary ages between 1800 and 150[r] ... See full document

... Figure 4. Photos from the Cabo Frio Tectonic Domain units. (A) 1.97 Ga coarse grained granite with dioritic enclaves, probably coeval and related to magma mingling; (B) Cross-cutting contact between the foliated 1.98 Ga ... See full document

... he greenstone belts successions are made of a basal ultra- maic unit made of komatiites, locally presenting well-pre- served spinifex textures and pillow structures, covered by a metabasalt unit with intercalations of ... See full document

... The evolution of the Neoproterozoic São Gabriel juvenile terrane, southern Brazil based on high spatial resolution U-Pb ages and 18 O data from detrital zircons. Granulitos da região [r] ... See full document

... In order to contribute to the understanding of the man- tle sources involved in PCFB, this study presents the irst Pb isotope data and a review of published major, minor and incompatib[r] ... See full document

... In summary, petrographic, whole-rock geochemistry and Nd data, and detrital zircon geochronology indicate that felsic to intermediate Rhyacian rocks of the São Luís cratonic fragment [r] ... See full document