Deglaciation sequences in the Permo-Carboniferous Itararé Group, Paraná Basin, southern Brazil

Vesely, Fernando Farias; Assine, Mário Luís

doi:10.1016/j.jsames.2006.09.006

Cited by 65 publications

(50 citation statements)

References 34 publications

(46 reference statements)

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“…Canuto et al, 2001;Vesely and Assine, 2006). Towards the Paraná Basin depocenter (western part of the São Paulo State), where the Itararé Group thickness reaches about 1,400 m, it is possible to recognize in the subsurface at least nine of these higher-frequency glacial cycles (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Well cores described elsewhere: 2 PP 1 SP and 2 PN 1SP from França and Potter (1988) and Souza (2006); 2CS 1 PR, 1 RS1 PR and 1MB 1SC from França and Potter (1988), Vesely (2006) and AC-72-RS from Cagliari et al (2016). The Ventania-Ibaiti surface section revisited from Vesely et al (2006). (C) Basin-scale correlation chart, notice the thickness changes of the Itararé Group along the basin and the relatively thin and young record exposed in the studied areas relative to the entire Itararé Group and to the well logs record.…”

Section: Captionsmentioning

confidence: 99%

“…Besides these major glacial episodes, some authors have also described regional scale, but higher-frequency glacial/deglacial cycles in Paraná and Santa Catarina states (Canuto et al, 2001, Vesely andAssine, 2006;d´Avila, 2009;Vesely et al, 2015, Fallgatter andPaim, 2017). The exposures around Doutor Pedrinho and Vidal Ramos provide good examples of deglacial deposits, mainly exposed in caves and waterfalls.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, their boundaries are unconformities and they correspond to depositional sequences dominated by deglacial facies represented by diamictites, sandstones, and mudstones with dropstones (França and Potter, 1991;Eyles et al, 1993;Santos et al, 1996;Vesely and Assine, 2006;Rocha-Campos et al, 2008;d´Avila, 2009). …”

Section: Introductionmentioning

confidence: 99%

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Late Palaeozoic glacial cycles and subcycles in western Gondwana: Correlation of surface and subsurface data of the Paraná Basin, Brazil

Buso

Aquino

Paim

et al. 2019

Palaeogeography, Palaeoclimatology, Palaeoecology

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The Paraná Basin, the largest basin in South America, received glacially derived sediments during the Late Palaeozoic Ice Age (LPIA) of the Gondwana supercontinent.Despite the importance of this basin for understanding the continental development of the Gondwana glaciation, and the fact that ca. 95% of this basin is not exposed at the surface, few attempts have been made to connect the exposed glacial strata to the subsurface record. In this paper, exposures of glacial cycles in the Upper Itararé Group in Santa Catarina State, southern Brazil, are analyzed, locally correlated and then linked to the three major glacial cycles previously described from subsurface studies along the basin. Together study areas (Doutor Pedrinho and Vidal Ramos) record five, partially comparable shorter glacial subcycles (relative to the major glacial cycles). These series comprise coarse-grained subaqueous outwash deposits, turbidite sand sheets, marine shales, and diamictites, the latter mostly derived from delta slope failure and ensuing resedimentation. In addition to sedimentological and genetic stratigraphic description and analysis, preliminary age determination based on the palynological content is also presented. Besides, a regional correlation of the described succession to the subsurface record is proposed based on well logs and core information. All the palynomorph associations identified from the exposed successions, which represent the upper third part of the Itararé Group, are related to the Subzone Protohaploxypinus goraiensis, base of the Vittatina costabilis Zone. This zone and correlated ones along the Gondwana are considered Early Permian in age. However, a first isotopic age recently obtained for the upper Itararé Group and published elsewhere is considered within a regional stratigraphic framework once it leads to new insights in terms of the LPIA time span recorded in the Paraná Basin.

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Section: Discussionmentioning

confidence: 99%

Section: Captionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Late Palaeozoic glacial cycles and subcycles in western Gondwana: Correlation of surface and subsurface data of the Paraná Basin, Brazil

Buso

Aquino

Paim

et al. 2019

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…The glacially influenced deposits, which extend for about 1600 km 2 throughout the basin, including the outcrop belt and the subsurface, are contained within the late Bashkirian to early Sakmarian Itararé Group (França and Potter, 1991;Holz et al, 2010). The bulk of the stratigraphic record of the Itararé Group is of glacially influenced, marine deposits such as dropstonebearing mudstones, mass-transport diamictites with faceted and striated clasts and thick sandstones constituting outwash fans, deltas and turbidite lobes (Rocha-Campos, 1967;Rocha-Campos and Rosler, 1978;Gravenor and Rocha-Campos, 1983;França and Potter, 1991;Eyles et al, 1993;Santos et al, 1996;Vesely and Assine, 2006;Rocha-Campos et al, 2008). Terrestrial glaciogenic deposits, including diamictites interpreted as tillites, seem to be restricted to the lowermost interval of the Itararé Group (e.g., Rocha-Campos et al, 2008).…”

Section: Geological Setting and Previous Workmentioning

confidence: 99%

Sedimentary record of a fluctuating ice margin from the Pennsylvanian of western Gondwana: Paraná Basin, southern Brazil

Vesely

Trzaskos

Kipper

et al. 2015

Sedimentary Geology

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The Paraná Basin is a key locality in the context of the Late Paleozoic Ice Age (LPIA) because of its location east of the Andean proto-margin of Gondwana and west of contiguous interior basins today found in western Africa. In this paper we document the sedimentary record associated with an ice margin that reached the eastern border of the Paraná Basin during the Pennsylvanian, with the aim of interpreting the depositional environments and discussing paleogeographic implications. The examined stratigraphic succession is divided in four stacked facies associations that record an upward transition from subglacial to glaciomarine environments. Deposition took place during deglaciation but was punctuated by minor readvances of the ice margin that deformed the sediment pile. Tillites, well-preserved landforms of subglacial erosion and glaciotectonic deformational structures indicate that the ice flowed to the north and northwest and that the ice margin did not advance far throughout the basin during the glacial maximum. Consequently, time-equivalent glacial deposits that crop out in other localities of eastern Paraná Basin are better explained by assuming multiple smaller ice lobes instead of one single large glacier. These ice lobes flowed from an ice cap covering uplifted lands now located in western Namibia, where glacial deposits are younger and occur confined within paleovalleys cut onto the Precambrian basement. This conclusion corroborates the idea of a topographically-controlled ice-spreading center in southwestern Africa and does not support the view of a large polar ice sheet controlling deposition in the Paraná Basin during the LPIA.

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The São Francisco Basin

Reis

Alkmim

Fonseca

et al. 2016

Regional Geology Reviews

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Deglaciation sequences in the Permo-Carboniferous Itararé Group, Paraná Basin, southern Brazil

Cited by 65 publications

References 34 publications

Late Palaeozoic glacial cycles and subcycles in western Gondwana: Correlation of surface and subsurface data of the Paraná Basin, Brazil

Late Palaeozoic glacial cycles and subcycles in western Gondwana: Correlation of surface and subsurface data of the Paraná Basin, Brazil

Sedimentary record of a fluctuating ice margin from the Pennsylvanian of western Gondwana: Paraná Basin, southern Brazil

The São Francisco Basin

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