Ostracodes Do Aptiano–albiano Da Bacia Do Araripe: Implicações Paleoambientais E Bioestratigráficas

Souza, Debora M. de; Piovesan, Enelise Katia; Neumann, Volker

doi:10.18190/1980-8208/estudosgeologicos.v27n1p3-18

Cited by 9 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The top of the section contains Microhedbergella miniglobularis and Gubkinella sp. associated with Pattersoncypris micropapillosa, the last of which is an ostracode species recorded in the Aptian-Albian interval3,43,46,49,[61][62][63][64][65] . Moreover, typical Albian assemblage not recovered from our samples (e.g., Microhedbergella renilaevis and Microhedbergella rischi), that marks the top of the Microhedbergella miniglobularis Zone 50 and the base of the Albian, corroborates the Aptian age for the section.…”

mentioning

confidence: 99%

New marine data and age accuracy of the Romualdo Formation, Araripe Basin, Brazil

Melo

Guzmán

Almeida-Lima

et al. 2020

Sci Rep

View full text Add to dashboard Cite

A combined biostratigraphic and palaeoecological study of foraminifera, ostracodes and microfacies was carried out on the Aptian in the Sítio Sobradinho section of the Araripe Basin, northeast Brazil. The analysed section represents a deepening-upward sequence with mid-ramp shoal and outer ramp to basin facies associations on a mixed siliciclastic-carbonate marine ramp. The analysed rocks are dominated by Early Cretaceous planktic foraminifera (Hedbergella aptiana, H. praelippa, H. sigali, Blesfucuiana cf. cumulus, Microhedbergella miniglobularis, Gorbachikella cf. kugleri, Pseudoguembelitria blakenosensis, Globigerinelloides clavatus, Globigerinelloides aff. aptiensis, Gubkinella sp. and Loeblichella sp.). Ostracoda fauna is composed mainly of Pattersoncypris crepata and Pattersoncypris micropapillosa. The occurrence of P. crepata associated with the Aptian planktic foraminifera demonstrates the potential of this ostracode species to date this interval. The planktic foraminifera from the upper Aptian (Microhedbergella miniglobularis Zone) of the Araripe Basin show characteristical Tethyan affinities.

show abstract

mentioning

confidence: 99%

New marine data and age accuracy of the Romualdo Formation, Araripe Basin, Brazil

Melo

Guzmán

Almeida-Lima

et al. 2020

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Sp. (Coimbra et al, 2002;Souza et al, 2017) e fragmentos continentais como âmbar (Pereira et al, 2020) corroboram com a interpretação de um ambiente continental para estes folhelhos. Estudos Geológicos v 30(1) https://periodicos.ufpe.br/revistas/estudosgeologicos/index A influência de algas marinhastransicionais apontadas neste estudo e a presença de outros organismos exclusivamente de origem marinha (Arai, 2009;Arai, 2014;Goldberg et al, 2019) leva-se a considerar a deposição destes folhelhos em um ambiente transicional a um marinho restrito, onde existiria a influência desde organismos marinhos a organismos continentais.…”

Section: Discussionunclassified

Paleoambiente Deposicional E Origem Da Matéria Orgânica Dos Folhelhos Betuminosos Da Formação Ipubi, Porções Leste E Sudeste Da Bacia Do Araripe, Ne Do Brasil: Evidência De N-Alcanos E Isoprenoides

Moura¹,

Araújo²,

Lúcio³

et al. 2020

Est. Geol.

View full text Add to dashboard Cite

Paleoenvironmental conditions from cretaceous black shales of Ipubi Formation (Araripe Basin-NE Brasil) are continuously debated. The main point of controversy is if these rocks were deposited in a lacustrine or restricted marine environment. The present study was developed in these black shales, by saturated biomarkers analyses (n-alkanes and isoprenoids) to discuss about the paleoenvironment of deposition of those shales. The n-alkanes predominance between n-C13 and n-C19 reveal algalic contribution. However an influence of terrestrial organism is also observed by the presence of n-C27, n-C28, and n-C29. The Pr/Ph ratio and Pr/Ph vs. (Pr+n-C17)/(Fi+n-C18) diagram indicated both anoxic and hypersaline conditions during the deposition of those shales. The Pr/n-C17 vs. Ph/n-C18 diagram also suggests reducing conditions, and classify an algalic contribution as marine-transitional source. Thus, this study indicates that the investigated shales were deposited in reducing and hypersaline conditions in a restricted marine to transitional environment.

show abstract

“…Because Theriosynoecum silvai and T. quadrinodosa are very different, not only in size but also in outline and ornamentation. Other works, such as Do and Guzmán et al (2022), follow this same synonymization, while the synonym list of T. silvai presented by Souza et al (2017) does not include T. quadrinodosa.…”

Section: Candonopsis Alagoensismentioning

confidence: 96%

The critical role of accurate fossil identification: the case of the ostracods of the Codó Formation, NE Brazil

Coimbra,

Petró

2023

Rev. bras. paleontol.

View full text Add to dashboard Cite

The Class Ostracoda comprises bivalve microcrustaceans with great diversity and abundance in the Lower Cretaceous paleolakes of Brazil and the world. With species generally well-preserved and of relatively short biochrons, it has provided high-resolution biostratigraphic frameworks that permit long-distance correlations. In this context, the Lower Cretaceous biozones of the NE Brazilian basins have allowed the establishment of correlations between coeval geological sections not only in this region but also with those of the Brazilian marginal basins, including the rocks of the pre-salt deposits, as well as with West African basins. In addition to biostratigraphy, these microfossils have proved indispensable in paleoenvironmental and paleogeographical analyses, including studies on the opening of the South Atlantic Ocean. However, some publications have emerged that, regrettably, exhibit errors in species identification and/or the accurate interpretation of biostratigraphic works. These mistakes have led to proposed modifications in both the biochron and geographic distribution of index taxa and taxonomic synonymizations that are incongruent with the current state of knowledge of the species. Consequently, these inaccuracies have given rise to erroneous biochronostratigraphic correlations and paleoenvironmental inferences. In this context, we meticulously examine the current understanding of the taxonomy of ostracods from the Codó Formation (NE Brazil), which is essential for the debate on the use of Lower Cretaceous ostracods in stratigraphy. Keywords: biostratigraphy, paleoecology, microfossils, Lower Cretaceous, Brazil.

show abstract

Ostracodes Do Aptiano–albiano Da Bacia Do Araripe: Implicações Paleoambientais E Bioestratigráficas

Cited by 9 publications

References 0 publications

New marine data and age accuracy of the Romualdo Formation, Araripe Basin, Brazil

New marine data and age accuracy of the Romualdo Formation, Araripe Basin, Brazil

Paleoambiente Deposicional E Origem Da Matéria Orgânica Dos Folhelhos Betuminosos Da Formação Ipubi, Porções Leste E Sudeste Da Bacia Do Araripe, Ne Do Brasil: Evidência De N-Alcanos E Isoprenoides

The critical role of accurate fossil identification: the case of the ostracods of the Codó Formation, NE Brazil

Contact Info

Product

Resources

About