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2006
DOI: 10.25249/0375-7536.2006364576587
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O Grupo Araras (Neoproterozóico) Na Parte Norte Da Faixa Paraguai E Sul Do Craton Amazônico, Brasil

Abstract: 2 Bolsista de produtividade em pesquisa do CNPq.

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Cited by 27 publications
(33 citation statements)
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“…This group includes four formations, a basal cap dolostone (Mirassol d'Oeste Formation), a dark gray laminated lime-mudstone and shale (Guia Formation), and a shallow-water dolostone succession (Nobres Formations) bounded by flooding surface related to an abrupt sea-level rise characterized by a coarsening-upward succession from deep-shale to shallow limestone stromatolites (Pacu Formation). The basal Mirassol d'Oeste Formation is characterized by laminated dolostone, exhibiting microbialite, wave ripple, and fan-like crystals Nogueira & Riccomini 2006;Alvarenga et al 2008). This 25-m-thick cap dolostone yielded negative δ 13 C values from -10.5‰ to -3.0‰ and δ…”
Section: Northern Paraguay Beltmentioning
confidence: 99%
“…This group includes four formations, a basal cap dolostone (Mirassol d'Oeste Formation), a dark gray laminated lime-mudstone and shale (Guia Formation), and a shallow-water dolostone succession (Nobres Formations) bounded by flooding surface related to an abrupt sea-level rise characterized by a coarsening-upward succession from deep-shale to shallow limestone stromatolites (Pacu Formation). The basal Mirassol d'Oeste Formation is characterized by laminated dolostone, exhibiting microbialite, wave ripple, and fan-like crystals Nogueira & Riccomini 2006;Alvarenga et al 2008). This 25-m-thick cap dolostone yielded negative δ 13 C values from -10.5‰ to -3.0‰ and δ…”
Section: Northern Paraguay Beltmentioning
confidence: 99%
“…Large negative C-isotope excursions in the Neoproterozoic times are generally associated to the postglacial carbonate succession and probably reflect oceanographic processes (Kaufman et al 1991, Kaufman et al 1997, Hoffman et al 1998. In Brazil, several studies conducted in the southwestern Amazonian Craton recognized diamictite underlying post-glacial carbonate Neoproterozoic successions (Nogueira & Riccomini 2006, Alvarenga et al 2008, Soares & Nogueira 2008, Soares et al 2013.…”
Section: Stratigraphic Correlationsmentioning
confidence: 99%
“…No centro-oeste brasileiro, a base do período Ediacarano é marcada pela formação de extensas plataformas carbonáti-cas do Grupo Araras, discordantemente recoberta por depó-sitos de rochas siliciclásticas do Grupo Alto Paraguai, com idade ediacarana-cambriana (635 -541 Ma), distribuídas ao longo da margem sul do Cráton Amazônico e segmento norte da Faixa Paraguai (Almeida, 1964;Silva Jr., 2006;Nogueira et al, 2003Nogueira et al, , 2006Nogueira et al, , 2007Bandeira et al, 2012).…”
Section: Introductionunclassified