[PDF] Top 20 Braz. J. Geol. vol.46 número3

... In late May 2015, the Brazilian Journal of Geology (BJG) was accepted by homson Reuters for inclusion in the Science Citation Index Expanded (SCIE) and in the Journal Citation Reports ([r] ... See full document

... ABSTRACT: he present work investigates the relationship between whole-rock geochemistry and stable isotope composition from carbo- natites belonging to the Tapira, Araxá, Salitre, Serra[r] ... See full document

... Samples in the lower organic-rich bed in HV-44 have high DOP T and very high Fe T /Al, sug- gesting inhospitable, anoxic conditions during the depo- sitions of these sediments (Lyons a[r] ... See full document

... Roddaz M., Viers J., Brusset S., Baby P., Boucayrand C., Herail G. 2006. Controls on weathering and provenance in the Amazonian foreland basin: Insights from major and trace element geochemistry of Neogene ... See full document

... others vol- atiles; Sørensen 1997, Le Maitre 2002) is restricted to a few localities in this province, usually in small volumes associated with large miaskitic bodies, as in the Poços de Caldas, Itatiaia, and ... See full document

... hin sections were described on a Leica DM EP microscope at the Departamento de Geologia (DEGEO), Universidade Federal de Ouro Preto. Microprobe analyses on the titanite were performed on a JEOL microprobe JXA 8900 RL, at ... 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

... In the spectral region covered by Landsat-8/OLI band 4, iron oxides (hematite and goethite) and clay minerals have high relectance and, conversely, the chlorophyll of the green vegeta[r] ... 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

... 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

... 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

... 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

... 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

... 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

... 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

... 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

... 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

... 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

... 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

... he syenites constitute the most central portion of the pluton and occur in blocks and slabs which can be frac- tured and faulted (b). he syenites exhibit pink to reddish gray color, equigranular to slightly ... See full document