Eurydesma–Lyonia fauna (Early Permian) from the Itararé group, Paraná Basin (Brazil): A paleobiogeographic W–E trans-Gondwanan marine connection

Taboada, Arturo César; Neves, Jacqueline Peixoto; Weinschütz, Luiz Carlos; Pagani, María Laura; Simões, Marcello Guimarães

doi:10.1016/j.palaeo.2016.02.022

Cited by 35 publications

(6 citation statements)

References 86 publications

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“…6). further south, the Deseado Massif (e.g., Taboada et al, 2016). Paleobiogeographic studies by Taboada and Shi (2011) indicate that the Tepuel-Genoa basin would have been located at high latitudes (approximately 70º) between the middle Carboniferous and the earliest Permian.…”

Section: Reconstruction Of Gondwana and South Americamentioning

confidence: 99%

The Paleozoic Central Patagonian Igneous Metamorphic Belt: its geodynamic and tectonic interpretation based on Paleogeographic reconstructions

Vizán¹

2022

Preprint

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In the southwestern margin of the North Patagonian Massif there is a NW 26 SE belt of igneous and metamorphic rocks defining a limit between the North Patagonian Massif and southern Patagonia (including the Deseado Massif), named the Central Patagonian Igneous Metamorphic Belt (CPIMB). The objective of this paper is to better understand the geodynamic and tectonic processes that generated its rocks and structures. More specifically, explanations are offered for different questions: 1) the aforementioned belt corresponds to a collisional or accretionary orogen? 2) during which geological event it was built? 3) how was the South American plate driftting during that process? 4) why the foliation of the rocks of one of its localities presents a different structural attitude than others? To answer these questions, paleogeographic reconstructions were performed based on paleomagnetic data ranging from ca.415 Ma to ca.305 Ma. Through these reconstructions and considering the middle and upper Paleozoic rocks located in a central area of this deformational belt (the Taquetrén range) and the geological background of several authors, it was possible to separate the processes involved in two tectonic cycles: the Chanic (late Devonian) and the Gondwanan (Carboniferous-Permian) events. The CPIMB presents rocks from an ancient orogen that was built mainly during the Chanic event. In the Taquetrén range the orogenic process would extend between approximately 400 Ma and about 360 Ma. Based on the data of this area, the Chanic orogen collapsed between about 360 Ma and about 330 Ma as the result of an abrupt change in the movement of South America along with all the other continents that constituted Gondwana. From a global geodynamic perspective, it is known that Pangea formed on a mantle super downwelling, where subduction zones surrounded this supercontinent. This caused magmatic processes in its margins and, in the Taquetrén range, triggered a plutonic emplacement in the old structures of the previous metamorphic rocks of the orogen at about 315 Ma. In these plutonic rocks, a Gondwanan tectonic event is recorded at about 300 Ma. During this event, a suggested transpressive deformation could have determined the assembly of southern Patagonia with the rest of the lithospheric domains of South America. This tectonic event ended in the central area of CPIMB before the intrusion of non-deformed batholiths during the Permian.

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Section: Reconstruction Of Gondwana and South Americamentioning

confidence: 99%

The Paleozoic Central Patagonian Igneous Metamorphic Belt: its geodynamic and tectonic interpretation based on Paleogeographic reconstructions

Vizán¹

2022

Preprint

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“…The fossil assemblages found in the studied locations have strong similarities with fossils found in other Gondwana basins in western Australia, Brazil, the Falkland Islands, Oman and South Africa (Table 1; Ghosh 2003; Fielding et al . 2006; Stephenson et al 2007; Taboada et al 2016; Horan et al 2019; Simoes et al 2020). Sahni and Dutt (1959) characterized its brachiopod assemblage by Trigonotreta hesdodoensis .…”

Section: Late Palaeozoic Glaciation In Gondwanamentioning

confidence: 99%

Glacial sedimentation in Northern Gondwana: insights from the Talchir formation, Manendragarh, India

et al. 2023

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Among the vast swathes of Gondwanan sedimentary rocks in India, exposures of the Lower Permian Talchir Formation at Manendragarh in India are exceptional for their cold marine faunal assemblage and muddy conglomerates of possible glacial origin. They may represent a record of the late Palaeozoic glaciation that affected Gondwana in the Permo-Carboniferous. Although the fossil record is relatively well documented, the sedimentology of this area is not well understood. This paper intends to fill the gap in knowledge regarding palaeogeography and the palaeoenvironmental changes within the basin through space and time. We distinguish conglomerates that are formed by glacial and mass flow processes. The lateral variation in facies associations along a NNE-SSW transect in the study area identifies the depositional basin as an interior sea that formed when the sea spilled over a steep basement ridge during a transgression. The benthic organisms remained confined to the seaward basin margin where they only flourished in the initial stage of basin filling. Locally derived, bioclastic storm beds are limited to the seaward flank of the basin. Alternating phases of glaciation and interglaciation resulted in an interbedded succession of grey shales and interglacial density flow deposits. The channels that fed these density flows are preserved closest to the landward margin of the basin. Co-existence of glacial diamictites and interglacial density flow deposits highlights the climatic changes in this part of Gondwana during the Late Palaeozoic.

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“…Inst. Geociênc., 2022;45:48193 fishes (Hamel 2005), brachiopods (Taboada et al 2016), sponges (Mouro et al 2014), crustaceans (Adami-Rodrigues et al 2012, conodonts (Wilner, Lemos & Scomazzon 2016), scolecodonts (Ricetti & Weinschütz, 2011), insects ) and larval cocoons (Mouro et al 2016).…”

Section: Geological Settingmentioning

confidence: 99%

“…Also, this location is considered one of the most important fossiliferous sites of the Itararé Group in the Paraná Basin, with a great variety of fossil groups. The fossiliferous Lontras shale (Hamel 2005;Ricetti & Weinschütz, 2011;Adami-Rodrigues et al 2012;Mouro et al 2014;Taboada et al 2016;Wilner, Lemos & Scomazzon 2016;Mouro et al 2018) is stratigraphically positioned at the base of the Rio do Sul Formation, which is the upper unit of the Itararé Group according to Schneider et al (1974). In this locality, a collection of about 300 meters of drill cores were the object of study by Weinschütz and Castro (2004), Weinschütz and Castro (2005) and Weinschütz and Castro (2006).…”

Section: Introductionmentioning

confidence: 99%

Depositional Sequences of the Itararé Group in the Region of Mafra (SC) and their Regional Correlation

Kraft

Vesely

Weinschütz

2022

Anu. Inst. Geociênc.

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The Itararé Group, Permocarboniferous of the Paraná Basin, has its deposition associated with the Late Paleozoic Ice Age (LPIA), which encompassed multiple glacial advance-retreat cycles. Recognizing the nature of the processes that form these rocks is essential to understand the diversity of glacial and non-glacial depositional systems that were active during the LPIA. Previous authors have carried out sedimentological and stratigraphic studies in outcrops of the Itararé Group in the Santa Catarina and Paraná states, however, the integration between these areas and the delimitation of glacial cycles is still little known. Seeking to increase the knowledge on the stratigraphy of the Itararé Group, this work aims to investigate its facies in five shallow boreholes in the Mafra region, northern Santa Catarina state. In this region, 300 meters of cores sampled almost the entire stratigraphic succession of the Itararé Group. We further integrate our results with published data from Alfredo Wagner, Vidal Ramos, Presidente Getúlio, Doutor Pedrinho and São João do Triunfo in order to build a regional stratigraphic framework. A total of 33 sedimentary facies were recognized and organized in five genetic associations, corresponding to subaqueous outwash fans, rain-out and mud settling, thin-bedded turbidites, mass- transport deposits, and thick-bedded turbidites. The regional stratigraphic correlation allowed the recognition of 5 glacial cycles, corresponding to depositional sequences of deglaciation. They show signs of glacial influence that diminish toward the top, where deltaic deposits developed as climatic conditions improved. Diamictites are present in all areas and distributed preferentially in the lower and middle sequences. They consist of mass- transport deposits with origin attributed to gravitational instability due to sediment accumulation in melting and glacial retreat phases.

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Eurydesma–Lyonia fauna (Early Permian) from the Itararé group, Paraná Basin (Brazil): A paleobiogeographic W–E trans-Gondwanan marine connection

Cited by 35 publications

References 86 publications

The Paleozoic Central Patagonian Igneous Metamorphic Belt: its geodynamic and tectonic interpretation based on Paleogeographic reconstructions

The Paleozoic Central Patagonian Igneous Metamorphic Belt: its geodynamic and tectonic interpretation based on Paleogeographic reconstructions

Glacial sedimentation in Northern Gondwana: insights from the Talchir formation, Manendragarh, India

Depositional Sequences of the Itararé Group in the Region of Mafra (SC) and their Regional Correlation

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