Search Results - "dos Santos, Hélisson Nascimento"

Mineral Quantification with Simultaneous Refinement of Ca-Mg Carbonates Non-Stoichiometry by X-ray Diffraction, Rietveld Method by Hélisson Nascimento dos Santos, Reiner Neumann, Ciro Alexandre Ávila

“…Quantitative phase analyses of carbonate rocks containing Mg-rich calcite and non-stoichiometric dolomite by the Rietveld method yielded improved results when…”
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Sedimentological and geochemical characterization of microbial mats from Lagoa Vermelha (Rio de Janeiro, Brazil) by Guedes, Caio Bittencourt, Arena, Michele Correia, dos Santos, Helisson Nascimento, Valle, Bruno, Santos, Jeferson de Andrade, Favoreto, Julia, Borghi, Leonardo

“…The presence of microbialites in the hypersaline lagoons of Rio de Janeiro is especially important in the study of recent analogs of carbonate rocks with…”
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Microstructure and mineral composition of Holocene stromatolites from Lagoa Vermelha, a hypersaline lagoon in Brazil: Insights into laminae genesis by Keim, Carolina N., dos Santos, Hélisson Nascimento, Santiago, Carolina Souza, Pennafirme, Simone, Neumann, Reiner, Schnellrath, Jürgen, Lima, Inayá, Crapez, Mirian A.C., Farina, Marcos

“…Stromatolites are domes, columns, or nearly flat crusts of laminated sedimentary rocks, usually consisting of Ca-Mg carbonates. Stromatolites result from…”
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Depositional and diagenetic characteristics of the Lula's Fingers: Evidences of microbial activity and exposure during final pre-salt depositional in Santos Basin by Plantz, Josiane Branco, da Silva, Michele Correia Arena Salvador, Santos, Jeferson, Nascimento dos Santos, Hélisson, Borghi, Leonardo

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Identifying and quantifying Mg-clays in well logs using new petrophysical methods: A case study from the Brazilian pre-salt by Valle, Bruno, Dal’ Bó, Patrick Führ, Nascimento dos Santos, Hélisson, Coelho, Pedro, Raitz, Gilberto, Arena, Michele, Santos, Jeferson, Favoreto, Julia, Ribeiro, Carolina, Borghi, Leonardo

“…The Santos Basin, located in offshore southeast Brazil, is the site of several giant oilfields of the Pre-salt interval. The limestones from the Barra Velha…”
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