A geophysical view of the Southeastern Brazilian margin at Santos Basin: Insights into rifting evolution

Stanton, Natasha; Ponte-Neto, Cosme F.; Bijani, Rodrigo; Masini, Emmanuel; Fontes, Sergio L.; Flexor, Jean-Marie

doi:10.1016/j.jsames.2014.07.003

Cited by 25 publications

(10 citation statements)

References 39 publications

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“…It stands out as a remarkable elongated topographic structure, one of the few elongated ones in the province and the only one oriented to WNW (Fig. 2), which is in accordance with the accommodation zones of the rift system and the transfer zones of the South Atlantic Ocean Plate (Meisling & Cob 2001, Zalán & Oliveira 2005, Cogné et al 2012, Stanton et al 2014, Negrão et al 2015.…”

Section: Geological Evolutionsupporting

confidence: 71%

Nepheline syenites to syenites and granitic rocks of the Itatiaia Alkaline Massif, Southeastern Brazil: new geological insights into a migratory ring Complex

Rosa

Ruberti

2018

Braz. J. Geol.

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The Itatiaia Alkaline Massif comprises some of the largest meso-cenozoic alkaline igneous occurrences in Brazil, covering over 215 km 2 between the states of Minas Gerais and Rio de Janeiro. It appears as an elongated, 30-km long and 4.5-11.5-km wide SE-NW-trending body emplaced along accommodation zones of the Continental Rift of Southern Brazil, intruding metapelites, orthogneiss and granites of the Brasília and Ribeira fold belts. New data and geological mapping suggest that the massif evolved from a migratory magmatic center manifested as ring structures and successive moon-shaped intrusions from SE to NW in three sectors of distinct lithological and geomorphological characteristics: Southeastern, Central and Northwestern. The lithological variants in the three sectors present themselves as discrete intrusive bodies, comprising feldspathoid-bearing and quartz-bearing syenites, porphyritic to breccioid trachytes, granite, monzonite, gabbro and trachybasalt, which can be grouped into 21 units. These rocks occur in five petrographical sets: plagioclase-free nepheline syenites, plagioclase-bearing nepheline syenite and pulaskites, nordmarkite-granite series, anti-rapakivi associations and basic rocks. Sin-to tardi-plutonic dykes of nephelinites, phonolites, trachytes and rhyolites are also present.

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Section: Geological Evolutionsupporting

confidence: 71%

Nepheline syenites to syenites and granitic rocks of the Itatiaia Alkaline Massif, Southeastern Brazil: new geological insights into a migratory ring Complex

Rosa

Ruberti

2018

Braz. J. Geol.

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“…A series of high-angle normal faults in the northeast-southwest direction formed in the early stage of the rifting period were sealed into lake basins in the late stage. Some horsts formed by tectonic action or base highlands where magmatism intermittently exposed the water surface created bioclastic beach bar [45,46]. Therefore, pre-salt traps are mainly inclined fault blocks, horst and spade-shaped fault blocks related to normal faults, diapir anticlines, faulted anticlines, and various salt structures that dominate ancient, buried hills related to volcanism and the upper-salt structures.…”

Section: Target Overviewmentioning

confidence: 99%

Pre-Stack Seismic Data-Driven Pre-Salt Carbonate Reef Reservoirs Characterization Methods and Application

et al. 2021

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Carbonate reservoirs have significant reserves globally, but the substantial heterogeneity brings intractable difficulties to exploration. In the work area, the thick salt rock reduces the resolution of pre-salt seismic signals and increases the difficulty of reservoir characterization. Therefore, this paper proposes to utilize wavelet frequency decomposition technology to depict the seismic blank reflection area’s signal and improve the pre-salt signal’s resolution. The high-precision pre-stack inversion based on Bayesian theory makes full use of information from various angles and simultaneously inverts multiple elastic parameters, effectively depicting reservoirs with substantial heterogeneity. Integrating the high-precision inversion results and the Kuster-Toksöz model, a porosity prediction method is proposed. The inversion results are consistent with the drilling rock samples and well-logging porosity results. Moreover, the reef’s accumulation and growth, which conform to the geological information, proves the accuracy of the above methods. This paper also discusses the seismic reflection characteristics of reefs and the influence of different lithological reservoirs on the seismic waveform response characteristics through forward modeling, which better proves the rationality of porosity inversion results. It provides a new set of ideas for future pre-salt carbonate reef reservoirs’ prediction and characterization methods.

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“…It stands out as a remarkable elongated topographic structure, one of the few elongated ones in the province and the only one oriented to WNW (Fig. 2), which is in accordance with the accommodation zones of the rift system and the transfer zones of the South Atlantic Ocean Plate (Meisling et al, 2001;Zalán & Oliveira, 2005;Stanton et al, 2014;Negrão et al, 2015).…”

Section: Geological Evolutionsupporting

confidence: 69%

“…O maciço encontra-se alojado na região adjacente à Bacia de Resende e próxima da Zona de Acomodação de Queluz, que divide o Rifte do Paraíba do Sul em dois padrões tectônicos distintos (Zalán & Oliveira, 2005). O MAI possui uma notável elongação (cerca de 30 km no eixo maior, com largura variável de 4,5 a 11,5 km) orientada segundo a mesma direção das zonas de acomodação tectônica do RCSB e das zonas de transferência da Placa Oceânica do Atlântico Sul (Meisling & Cob, 2001;Zalán & Oliveira, 2005;Stanton et al, 2014;Negrão et al, 2015). Ressalta-se que o MAI é uma das poucas ocorrências alongadas da Província Alcalina da Serra do Mar e a única com direção discordante dos lineamentos regionais SE.…”

Section: Evolução Geológicaunclassified

Geologia e evolução petrogenética do Maciço Alcalino de Itatiaia, MG-RJ

Rosa¹

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Antes de tudo agradeço aos meus pais, Maurício e Carmen Lúcia, por me oferecerem sempre todo o incentivo, oportunidade e confiança que me fizeram chegar até aqui. À minha irmã, Jaqueline, por sempre me apoiar e criticar nos momentos necessários (e bem-vindo Theo!), aos meus avôs Geraldo e Joaquim, por suas lições de vida e sabedoria que vão muito além de livros e aulas, e a todos meus familiares.Ao professor Excelso pela confiança dedicada ao longo desses dez anos de ensinamentos e amizade. Aos professores Gaston Enrich, Rogério Azzone e Adriana Alves pelas inúmeras assistências, discussões e sugestões. Aos professores

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A geophysical view of the Southeastern Brazilian margin at Santos Basin: Insights into rifting evolution

Cited by 25 publications

References 39 publications

Nepheline syenites to syenites and granitic rocks of the Itatiaia Alkaline Massif, Southeastern Brazil: new geological insights into a migratory ring Complex

Nepheline syenites to syenites and granitic rocks of the Itatiaia Alkaline Massif, Southeastern Brazil: new geological insights into a migratory ring Complex

Pre-Stack Seismic Data-Driven Pre-Salt Carbonate Reef Reservoirs Characterization Methods and Application

Geologia e evolução petrogenética do Maciço Alcalino de Itatiaia, MG-RJ

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