Deep-burial hydrothermal alteration of the Pre-Salt carbonate reservoirs from northern Campos Basin, offshore Brazil: Evidence from petrography, fluid inclusions, Sr, C and O isotopes

Lima, Bruno Eustáquio Moreira; Tedeschi, Leonardo R.; Pestilho, André Luiz Silva; Santos, Roberto Ventura; Vazquez, Joselito C.; Guzzo, J. V. P.; Ros, Luiz Fernando De

doi:10.1016/j.marpetgeo.2019.104143

Cited by 71 publications

(72 citation statements)

References 80 publications

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“…Studies of the Eo-Cretaceous Pre-Salt interval of Campos Basin have thus far been focused on petrography, diagenetic history and depositional environments of reservoir rocks (Dias et al, 1988;Herlinger et al, 2017;Lima & De Ros, 2019;Lima et al, 2020;Mizuno et al, 2018;Muniz & Bosence, 2015;Olivito & Souza, 2020). However, only regional scale research into the Precambrian basement and rift structural geology of the basin has been undertaken (Chang et al, 1992;Fetter, 2009;Guardado et al, 1989;Stanton et al, 2019), along with that the basement rocks of Campos Basin have been considered mostly homogeneous in both regional (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Basement geology and its controls on the nucleation and growth of rift faults in the northern Campos Basin, offshore Brazil

2021

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Section: Introductionmentioning

confidence: 99%

“…Guardado et al, 1989) and local studies (e.g. Lima et al, 2020). Also, the structures that evolved during the rift initiation and climax are still poorly understood at reservoir scale in the north of the Campos Basin.…”

Section: Introductionmentioning

confidence: 99%

Basement geology and its controls on the nucleation and growth of rift faults in the northern Campos Basin, offshore Brazil

2021

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“…(B) Carbonate facies associations (FAs) from the Crato Formation. (C) Aptian successions from the Parnaíba, Campos and Santos basins (information from Bahniuk et al ., 2015; Lima et al ., 2020; Pietzsch et al ., 2020).…”

Section: Discussionmentioning

confidence: 99%

“…The Aptian Cod o Formation (Parna ıba Basin), also in the north-eastern Brazilian interior, bears carbonate deposits that can be correlated with those of the Crato Formation (Varejão et al, 2016). There, microbialites developed in a closed lacustrine system with d 18 O between Bahniuk et al, 2015;Lima et al, 2020;Pietzsch et al, 2020).…”

Section: Implications For a Pre-salt Analoguementioning

confidence: 99%

Mixed siliciclastic–carbonate sedimentation in an evolving epicontinental sea: Aptian record of marginal marine settings in the interior basins of north‐eastern Brazil

et al. 2021

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The Aptian evaporitic transitional sequence (sag phase) of the Brazilian marginal basins records the first connection between the Central and South Atlantic oceans in the equatorial area. During this phase, lacustrine carbonate reservoirs and giant salt deposits developed in the southern basins of Santos and Campos, forming world-class petroleum reservoirs. The sag succession is also well-preserved in the interior rift basins of north-eastern Brazil, where upper Aptian strata are represented by a continuous section. This contribution presents an interpretation of the evolution of a third-order depositional sequence comprising lacustrine limestones, marine siliciclastic facies and evaporite deposits of the intracontinental Araripe Basin. The Lowstand Systems Tract is characterized by fluvial deposits filling accommodation generated during the syn-rift phase. The overlying deposits comprise marine facies with preservation of dinoflagellates and marine ichnotaxa, evidencing marine deposition in bayhead delta settings. The transgressive surface is represented by limestones, including the Konservat-Lagerst€ atte laminites, onlapping the basement rocks. Above, tide-dominated bay deposits with distinct subtidal, intertidal and supratidal portions are recorded. The Maximum Flooding Surface is a dark shale below foreshore to shoreface facies, marking the beginning of the Highstand Systems Tract, culminating with deposition of evaporites (gypsum and anhydrite). The stratigraphic architecture and palaeocurrents measured in different facies associations suggest that marine waters reached the basin from the south. The data unequivocally records late Aptian marine ingressions of an incipient South Atlantic Ocean over the interior basins of north-eastern Brazil, while lacustrine conditions were still prevailing in the Pre-Salt sag units of the Santos and Campos basins.

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“…The interest on continental carbonates has increased sharply through the past decade, in part due to the discovery of huge petroleum reserves in the lacustrine carbonates of the South Atlantic Pre‐Salt province offshore Brazil and west Africa (Carminatti et al ., 2008; Wright & Barnett, 2014, 2015; Sabato Ceraldi & Green, 2017; Saller et al ., 2016; Wright & Tosca, 2016; Herlinger Jr. et al ., 2017; Abelha & Petersohn, 2018; Lima & De Ros, 2019; Lima et al. , 2020; Wright & Barnett, 2020).…”

Section: Introductionmentioning

confidence: 99%

Calcretes and travertines from the Palaeocene Itaboraí Basin as evidence of the early evolution of the Southeastern Brazil Continental Rift

et al. 2020

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The Itabora ı Basin, located in Rio de Janeiro state, is the smallest segment of the Southeastern Brazil Continental Rift, and the first to open, during the Palaeocene. Numerous studies focused on its fossiliferous content, but few systematically approached its depositional and diagenetic processes and products. A detailed description of the basal sedimentary deposits that remained after nearly fifty years of exploitation for cement production allowed an interpretation of the initial tectono-sedimentary conditions responsible for the formation of the Basin. The macroscopic and petrographic description of outcrops and well core samples of the calcretes and travertines that correspond to the initial basin infill was integrated with stable isotope geochemistry. The calcretes were separated into different facies (powdery, nodular, massive, platy, laminated and brecciated), and classified according to morphogenetic stages. Their main microscopic features include nodules, contraction cracks, vadose pisoliths, rhizocretions, infiltrated clays, corroded grains, expanded micas and clay aggregates with bimasepic-plasmic microfabric. The travertines exhibit diverse forms of abiotic calcite crystal aggregates (plumose, lamellar to prismatic-radial, spherulitic) and a minor proportion of microbial microcrystalline precipitates (bacterial shrubs). Tectonically active periods, characterized by intense fault movements associated with humid climate, promoted hydrothermal activity, formation of travertines and modification of the alluvial deposits and calcrete facies by ascending fluids. During periods of tectonic stability under arid to semi-arid climate, the exposed alluvial and hydrothermal deposits were influenced by pedogenetic processes. Sulphide-rich carbonate hydrothermal breccias occur in the main fault zone at the southern border. The characterization of extremely active pedogenetic and hydrothermal processes during opening and early evolution of the Itabora ı Basin is essential to the understanding of the initial evolution of the Southeastern Brazil 477

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Deep-burial hydrothermal alteration of the Pre-Salt carbonate reservoirs from northern Campos Basin, offshore Brazil: Evidence from petrography, fluid inclusions, Sr, C and O isotopes

Cited by 71 publications

References 80 publications

Basement geology and its controls on the nucleation and growth of rift faults in the northern Campos Basin, offshore Brazil

Basement geology and its controls on the nucleation and growth of rift faults in the northern Campos Basin, offshore Brazil

Mixed siliciclastic–carbonate sedimentation in an evolving epicontinental sea: Aptian record of marginal marine settings in the interior basins of north‐eastern Brazil

Calcretes and travertines from the Palaeocene Itaboraí Basin as evidence of the early evolution of the Southeastern Brazil Continental Rift

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