[PDF] Top 20 Braz. J. Geol. vol.45 número1

... Para atingir esses objetivos, a sociedade usa como um dos seus principais instrumentos seu periódico, criado em 1945, com o título de Boletim da Sociedade Brasileira de Geologia, e que [r] ... See full document

... he pervasive S 1-2 foliation is parallel or sub-parallel to the bedding planes. hese structures are mainly present in the carbonaceous phyllite and the hydrothermally altered metamaic rocks, but are subordinate in the ... See full document

... Two different facies were identified for Carbomil Well: bioclastic packstones to wackstones (sections C2, C4, C5, C6 and C7), representing a marine brackish or restricted marine syste[r] ... See full document

... (A) A disposição de S0, marcado pelas variações de cor, granulação, mineralogia; (B) Nos estágios iniciais da primeira fase de deformação (Dn) ocorreu a colocação dos veios de quartzo [r] ... See full document

... he F2 deformation phase was less intense and had a brittle to ductile behavior that accommodated a slight shortening through normal open subvertical folds, and reverse faults develope[r] ... See full document

... From this premise, a meta‑ultramaf‑ ic‑maic‑sedimentary complex (Cr‑rich magnesian schists — upper mantle or crustal ultramaic cumulate candidates; epidote amphi‑ bolites, metadiorites [r] ... See full document

... he antecryst microtextures, such as zoned clinopyroxene megacrysts (augite cores and titanaugite rims) with partly corrod‑ ed cores, olivine crystals with corroded rims surrounded by b[r] ... See full document

... Sr and Nd isotopic data available for the Urucum suite granitoids are similar to those obtained for syn-collisional granites (suite G 2 of Pedrosa-Soares & Wiedemann-Leonardos 20[r] ... See full document

... Of the nearly 5,000 known mineral species, only 65 were irst described from Brazil, that is, the type minerals from Brazil (Table 1).. Nineteen of these were published between 1789 and[r] ... See full document

... hese actions have brought results that go beyond those initially planned by the Executive Board of the SBG in con- junction with the Editorial Board of BJG, and has pushed the journal to[r] ... See full document

... Diferently from the Shikaoda Formation, the eolian sand sheet succession of the Bandeirinha Formation does not have subaqueous deposits, mud cracks or adhesion structures that may ind[r] ... See full document

... he Paraguay River lows from north to south, and is cha- racterized by intricate morphology of contrasting river plain styles from its entrance into the basin and throughout the alluvia[r] ... See full document

... Manuscript ID: 30305. Received: 04/12/2015. Approved: 05/18/2015. ABSTRACT: he Fernando de Noronha Archipelago presents, on its main island, a centrally-located stratigraphic unit, the Remédios Formation (age around 8 – ... See full document

... In the irst article “Unusual thick eolian sand sheet sedimentary succession: Paleoproterozoic Bandeirinha Formation, Minas Gerais”, Fábio Simplício and Giorgio Basilici deal with an eol[r] ... See full document

... 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

... here are: delta front facies association (FA1) com- posed of massive mudstone, sigmoidal, medium-grained sandstone with cross-bedding and massive conglomerate organized in coarse- ning-[r] ... See full document

... In this study, we reproduced the diage- netic reactions observed in the Snorre Field sandstones reser- voir, Norwegian North Sea using Geochemist’s Workbench (GWB) and TOUGHREACT softwa[r] ... See full document

... he sandy deposits are generally ine-grained and display tabular cross-stratiication (Facies Sp), climbing ripple cross-lamination (Facies Scc), sigmoidal cross-stratiication (Facies S[r] ... See full document

... Stabilized dunes formed with high RSL, similar to the present, and at coast lines close to the present ones are more or better exposed at the present coastal zone than dunes formed un[r] ... See full document

... he widespread mud laminae, which cover eolian sand deposits at the central and south sand sheet parts and are a recurrent sedimentary feature in stratigraphic section, are an importan[r] ... See full document