Paleoenvironment reconstruction of Parnaíba Basin (north, Brazil) using indicator species analysis (IndVal) of Devonian microphytoplankton

Trindade, Viviane Segundo Faria; Carvalho, Marcelo de Araújo

doi:10.1016/j.marmicro.2018.02.003

Cited by 21 publications

(4 citation statements)

References 16 publications

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“…Drilling holes were studied around the cities of Aparecida do Rio Negro, Novo Acordo, and Lagoa de Tocantins, to remake the paleoenvironment. The wells intersect the Itaim, Pimenteira and Cabeças formations, where chitinozoan, prasinophytes, acritarchs and miospore were recorded, indicating ages from the limit Pragian-Emsian to Famennian (Trindade, Carvalho & Borghi, 2015;Trindade & Carvalho, 2018).…”

Section: Paleontological Background Of Tocantins Statementioning

confidence: 92%

“…The Devonian fossils from Piauí are well represented by brachiopods, mollusks, arthropods, cnidarians, echinoderms, ichnofossils, tentaculitids, plants and fishes (Kegel, 1953;Barbosa, Ramos, Gomes & Helmbold,1966;Ramos, 1967;Assis & Fernandes, 1980;Ferreira & Fernandes, 1983;Góes & Feijó, 1994;Santos & Carvalho, 2004;Vaz, Rezende, Wanderley Filho & Travassos, 2007;Queiroz, Gama Jr & Pires, 2013). On the other hand, in Tocantins state few studies mention brachiopods, tentaculitids, cnidarians, molluscs, echinoderms, and plants (Ramos, 1967;Melo, 1988;Gama Jr., 2008;Scheffler et al, 2011;Queiroz, Gama Jr & Pires, 2013), as well as palynomorphs, spores, chitinozoan, and acritarchs (Lima & Leite, 1978;Grahn, Melo, & Loboziak, 2006), microfitoplancton (Trindade & Carvalho, 2018) and ichnofossils (Assis & Fernandes, 1980;Ferreira & Fernandes, 1983).…”

Section: Introductionmentioning

confidence: 99%

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Devonian macroinvertebrates from the State of Tocantins: occurrence history and new findings

Ribeiro¹,

Sousa²,

Gaia³

et al. 2021

TerraPlural

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The state of Tocantins has been the subject of several paleontological types of research in the past; however, the Devonian fossils have recently been poorly investigated. This paper expands the knowledge about Devonian in the state of Tocantins, presenting a bibliographic review and adding new fossiliferous discoveries. During fieldwork, brachiopods (Australocoelia, Australospirifer, Derbyina, infaunal lingulids, Orbiculoidea, Tropidoleptus carinatus, Schuchertella), cnidarians (Conularia quichua), crinoids (Exaesiodiscus dimerocrinosus, Laudonomphalus, Monstrocrinus), mollusks (Platyceras, Nuculites, Palaeoneilo, Sanguinolites), and plants remains (Spongiophyton lenticularis) were found in different sedimentary facies of the Pimenteira Formation

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Section: Paleontological Background Of Tocantins Statementioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Devonian macroinvertebrates from the State of Tocantins: occurrence history and new findings

Ribeiro¹,

Sousa²,

Gaia³

et al. 2021

TerraPlural

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“…In the Parnaíba Basin, black-shale intervals with relatively high Total Organic Carbon (TOC) values (>4.0%) are frequently detected in the Devonian section. These geochemical signatures are likely related to the Late Devonian worldwide transgression described in the literature (Lüning et al, 2004;Souza et al, 2013;Bond and Wignall, 2008;Trindade and Carvalho, 2018). Therefore, the present work intends to describe the TOC content excursions recorded in the Devonian section of the Parnaíba Basin and date these excursions by means of palynology, to fit the intervals to the global sea-level curve.…”

Section: Introductionmentioning

confidence: 89%

Palynology and geochemistry of the Frasnian global transgression in the Parnaíba Basin, Brazil

Steemans

Pereira

Hérissé

et al. 2021

Review of Palaeobotany and Palynology

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An integrated palynological and geochemical approach has been initiated to date and to precise the geochemical events of the Pimenteiras Formation, in the Late Devonian from the Parnaíba Basin, Brazil. Based on good biostratigraphic markers and presence of index species among miospores, acritarchs and chitinozoa, the investigated sequences are referred to the Middle to early Late Frasnian. Among Miospores, Chelinospora concinna and Verrucosisporites bulliferus are likely to be from the BPi Interval Zone defined in the Amazon Basin. Chitinozoans of the Early to early Late Frasnian Angochitina (Lagenochitina) avelinoi zone of the Parnaíba Basin are present, and acritarch assemblages are also consistent with a Middle to early Late Frasnian age, by comparison to assemblages previously described in other Brazilian basins. Some important accompanying species of palynomorphs are illustrated. In the studied outcrops, black shale intervals are referred to top of the Radioactive Sale B and Radioactive Shale C according to Rodrigues (1995) definitions. Top of Radioactive Shale B shows good concentration of terrestrial organic matter, but low potential source of gas. By comparison Radioactive Shale C of the upper part of the Pimenteiras Formation, with important concentration of marine organic matter have low to high potential as source of gas and condensate. This study shows that a progressive flooding took place during the Devonian period in the Parnaíba Basin with maximum marine transgression in the Frasnian. These global events of interest for hydrocarbon exploration, are regarded as markers for Gondwanan regional chronostratigraphic correlations.

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“…Specificity refers to the extent to which a species is associated with a particular habitat or condition, while fidelity represents the probability of finding a species in a habitat given its occurrence in the overall study area. The IndVal index has demonstrated successful applications in palynological studies (Caron and Jackson, 2007;Roucoux et al, 2013;Carvalho et al, 2017;Trindade and Carvalho, 2018;Leandro et al, 2020). In our study, the In-dVal index was employed to assess the degree of association between taxa and specific sample groups corresponding to different paleoclimatic phases.…”

Section: Indicator Speciesmentioning

confidence: 99%

Late Aptian paleoclimate reconstruction of the Brazilian equatorial margin: inferences from palynology

Cardoso da Silva Giannerini,

de Araujo Carvalho,

Cunha Lana

et al. 2023

Clim. Past

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Abstract. This study conducted high-resolution paleoclimatic analyses based on the identification of palynological groups of late Aptian age (biozone Sergipea veriverrucata) in the Bragança and Codó formations within the Bragança–Viseu, São Luís, and Parnaíba basins. The analysis comprised 40 palynological samples, with 200 palynomorphs per slide counted when possible. Bioclimatic analysis was mainly supported by the identification of botanical affinities, and ecological and climatic parameters such as the wet/arid trend (Fs/X), Shannon–Wiener diversity, and indicator species analysis (IndVal) were used. Statistical analyses such as principal component and cluster analyses were employed to support the paleoclimatic interpretations. The study recognized 69 genera distributed among the main groups of living plants, including bryophytes, ferns, lycophytes, gymnosperms, and angiosperms. It was possible to attribute botanical affinity in 94.2 % of the taxa, and nine genera occurred in all sections studied: Afropollis, Araucariacites, Callialasporites, Cicatricosisporites, Classopollis, Cyathidites, Deltoidospora, Equisetosporites, and Verrucosisporites, with Classopollis being the most abundant. The stratigraphic distribution of the bioclimatic groups (hydrophytes, hygrophytes, lowland tropical flora, upland flora, and xerophytes) allowed for the identification of climatic phases: pre-evaporitic, evaporitic, and post-evaporitic. In the pre-evaporitic phase, the most significant abundances were between the hygrophytes and upland flora, indicating a certain level of humidity. Xerophytes were the most abundant in all phases, with a conspicuous increase in the evaporitic phase, reflecting an increase in aridity. In the post-evaporitic phase, there was a significant increase in the upland flora with the return of wetter conditions. This study confirmed an increasing humidity trend in the analyzed sections, probably owing to the influence of the Intertropical Convergence Zone that was already operating during the late Aptian.

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Paleoenvironment reconstruction of Parnaíba Basin (north, Brazil) using indicator species analysis (IndVal) of Devonian microphytoplankton

Cited by 21 publications

References 16 publications

Devonian macroinvertebrates from the State of Tocantins: occurrence history and new findings

Devonian macroinvertebrates from the State of Tocantins: occurrence history and new findings

Palynology and geochemistry of the Frasnian global transgression in the Parnaíba Basin, Brazil

Late Aptian paleoclimate reconstruction of the Brazilian equatorial margin: inferences from palynology

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