Sedimentation of the Cretaceous Bauru Group in São Paulo, Paraná Basin, Brazil

Silva, Flávio de Paula e; Kiang, Chang Hung; Caetano-Chang, Maria Rita

doi:10.1016/j.jsames.2009.02.008

Cited by 35 publications

(33 citation statements)

References 14 publications

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“…The samples of the overlying Depositional Sequence 2, which belong to the Santo Anastácio Formation, contain apparent ages that are chronocorrelated with the Brasiliano, Famatianian, and Gondwanides, but there are also some zircons that were denudated during the Brasiliano Orogeny of the Brazilian Shield. Paula e Silva et al () report that the main river flow of the basal units was from NE to SW. The zircons with apparent ages of about 650–850 Ma may have come from the north from the Bauru Basin, probably from the Goiás Magmatic Arc rocks (Pimentel, ).…”

Section: Discussionmentioning

confidence: 99%

“…The sedimentary structures of the Caiuá and Pirapozinho formations point to main sedimentary transport from SW to NE. The overlying sequences, the Santo Anastácio, Adamantina, and Marilia formations, present a more complex sedimentary infill, with sedimentary supply from the SW, W, and E (Paula e Silva et al, ). In this case, the potential areas for the supply of sediments for the Depositional Sequence 1 would be mainly those areas situated to the SW of the Bauru Basin (the Pampean‐Brasiliano terrains) and the W (Goiás Magmatic Arch).…”

Section: Discussionmentioning

confidence: 99%

“…This way, we integrated the information gathered from 27 samples dated by FT, 10 of which were dated by the combined FT and U–Pb dating methods (see Table ). Figure shows a geological map of the study area with the sample locations, and Figure shows the stratigraphy and depositional environment of the sedimentary units of the Bauru Basin, as proposed by Paula e Silva et al ().…”

Section: Methodsmentioning

confidence: 98%

“…Paula e Silva et al () described the main units in a sequence stratigraphic context based on field and drill‐hole information. These authors defined three main depositional phases separated by two erosive/nondepositional phases, as shown in Figure .…”

Section: Geological Settingmentioning

confidence: 99%

“…Paula e Silva et al () interpreted the lower section to be small lacustrine deltas. The upper portion of the Adamantina Formation (sensu Paula e Silva et al, ), here defined as Presidente Prudente Member (or Presidente Prudente Formation after Fernandes & Coimbra, ), is represented by meandering to braided fluvial deposits, overlying the basal deltaic‐lacustrine sediments. The upper section of the Bauru Group is represented by the Marilia Formation, characterized by an increase in the aridity of the basin.…”

Section: Geological Settingmentioning

confidence: 99%

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Fission track and U–Pb double dating of detrital zircon applied to the intracratonic Mesozoic Bauru Basin, Brazil

et al. 2017

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Coupled fission‐track and U–Pb analyses of detrital zircons are presented. A Cretaceous intracratonic basin formed between 93 to 60 Ma, the Bauru Basin, is investigated to distinguish its provenance and information about the main orogenetic events of the South American Platform. The results of U–Pb zircon dating suggest that Rhyacian (Transamazonian Cycle, 2.3–2.05 Ga), Statherian (1.8–1 Ga), Sunsás (1.2–0.9 Ga), Tonian (Early Brasiliano, 1 to 0.85 Ga) and Brasiliano (0.65 to 0.50 Ga) terranes and units are the main source areas. The fission‐track data provide important evidence of cooling during the Early Brasiliano and Brasiliano periods and yields 2 main Paleozoic age populations, one between 500 and 360 Ma and the other between 345 and 230 Ma. These populations were interpreted as resulting from different tectonic events along the western margin of the South American Platform that affected the platform's internal composition by uplift and exhumation.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 98%

Section: Geological Settingmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

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Fission track and U–Pb double dating of detrital zircon applied to the intracratonic Mesozoic Bauru Basin, Brazil

et al. 2017

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Sedimentology of a distributive fluvial system: The Serra da Galga Formation, a new lithostratigraphic unit (Upper Cretaceous, Bauru Basin, Brazil)

et al. 2020

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The Bauru Basin of SE Brazil is a large (ca. 370,000 km2) Upper Cretaceous intracratonic feature, important for its fossil remains and of particular value as a source of regional palaeoclimatic information. Historically, lithostratigraphic reconstructions have been performed mainly for successions of the central and southern parts of the basin, resulting in a lithostratigraphic scheme that is not applicable to the northernmost regions. In particular, the northeastern deposits of the Marília Formation (Serra da Galga and Ponte Alta members) reveal lithological, stratigraphic, and palaeontological differences from southeastern and northwestern counterparts (Echaporã Member). Nevertheless, these deposits are considered as a single lithostratigraphic formation in the literature. To address this problem, this study demonstrates how the northeastern deposits of the Marília Formation do not show affinity to the rest of the unit. A more suitable lithostratigraphic model is proposed for the northeastern succession as a distinct and independent unit. Lithofacies and palaeopedological analysis, combined with lithostratigraphic mapping of the northeastern deposits, reveal 11 distinct lithofacies and three pedotypes over an area of ~450 km2. Sedimentary facies and pedotypes were assigned to six interbedded architectural elements: (a) type 1 channel fill, (b) type 2 channel fill, (c) type 3 channel fill, (d) interchannels, (e) palaeosols, and (f) calcrete beds. The succession is interpreted as a distributive fluvial system with overall direction of flow to the NNW, and which developed under the influence of a semiarid climate regime. This contrasts with deposits of the southeastern and northwestern Marília Formation, previously suggested to be of fine‐grained aeolian affinity with interbedded poorly channelised deposits assigned to an aeolian sand sheet environment. By revising the existing lithostratigraphic scheme for the northeastern deposits, and contrasting them with laterally equivalent strata, this work demonstrates how the previously named Serra da Galga and Ponte Alta members reveal a unique set of lithological, architectural, and genetic signatures that permits to separate them from the Marília Formation. Finally, a new lithostratigraphic classification for the unit is proposed: the Serra da Galga Formation, whose deposition relates to an ancient distributive fluvial system.

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New Regional Correlations Between the Congo, Paraná and Cape-Karoo Basins of Southwest Gondwana

Linol

Wit

Milani

et al. 2014

Geology and Resource Potential of the Congo Basin

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Sedimentation of the Cretaceous Bauru Group in São Paulo, Paraná Basin, Brazil

Cited by 35 publications

References 14 publications

Fission track and U–Pb double dating of detrital zircon applied to the intracratonic Mesozoic Bauru Basin, Brazil

Fission track and U–Pb double dating of detrital zircon applied to the intracratonic Mesozoic Bauru Basin, Brazil

Sedimentology of a distributive fluvial system: The Serra da Galga Formation, a new lithostratigraphic unit (Upper Cretaceous, Bauru Basin, Brazil)

New Regional Correlations Between the Congo, Paraná and Cape-Karoo Basins of Southwest Gondwana

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