Permian stromatolites associated with bivalve coquina beds-Angatuba, SP, Brazil (Teresina Formation, Paraná Basin)

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorSecretaria do Meio Ambiente do Estado de São Paulo-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Federal do Estado do Rio de Janeiro-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.creatorFilho, William Sallun-
Autor(es): dc.creatorGhilardi, Renato Pirani-
Autor(es): dc.creatore Silva, Loreine Hermida Silva-
Autor(es): dc.creatorHachiro, Jorge-
Data de aceite: dc.date.accessioned2025-08-21T22:37:49Z-
Data de disponibilização: dc.date.available2025-08-21T22:37:49Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2012-12-01-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/227181-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/227181-
Descrição: dc.descriptionSilicified stromatolites have been described in the Permian Teresina Formation, Passa Dois Group, of the Paraná Basin. These stromatolites occur as blocks in the Fazenda Monte Alegre area at the headwaters of the creek known as Córrego Catanduva in the municipality of Angatuba. These blocks originate from the Serra de Angatuba region and were recognized in a road that was cut in the midst of sandstones and siltites. The stromatolites are isolated bioherms that are domed to subspherical with a flat base in profile and a rounded to lenticular shape in plan view. The stromatolites exhibit a reddish coloration and are composed of microcrystalline quartz. Lamination is continuous, non-columnar, and anastomosed, showing parallel to divergent growth; however, divergent columns also occur, especially at the tops of the bioherms. The lamination is fine and well preserved, with alternating light and dark laminas. Microfossils of filamentous cyanobacteria are preserved and were related to the genera Microcoleus and Rivularia. Silicified bivalves occur in association with the stromatolites and are preserved in the form of coquina beds and rare isolated specimens within the bioherms. The described specimens belong to the Pinzonella illusa biozone, with representatives of the species Pinzonella illusa, Angatubia cowperesioides, and Houldausiella elongata. The formation environment of these stromatolites is associated with tidal plains of shallow, brackish, relatively calm, warm waters of good luminosity with the presence of weak currents. There was likely a low level of predation, and the environment may have been hypersaline. The coquina beds associated with the stromatolites indicate a probable proximal tempestite, i.e., they were formed near the coastline. The stromatolites were originally composed of carbonates, although these were replaced by silica during early diagenesis. © Palaeontological Association March 2012.-
Descrição: dc.descriptionInstituto Geológico Secretaria do Meio Ambiente do Estado de São Paulo, Av. Miguel Stéfano, 3900, 04301-903, São Paulo, SP-
Descrição: dc.descriptionDepartamento de Ciências Biológicas UNESP-Bauru, Av. Eng. Luiz Edmundo Carrijo Coube, s/n, 17033-360, Bauru, SP-
Descrição: dc.descriptionUniversidade Federal do Estado do Rio de Janeiro, Av. Pasteur 458, Bloco III, 22290-240, Rio de Janeiro, RJ-
Descrição: dc.descriptionInstituto de Geociências Universidade de São Paulo, Rua do Lago, 562, 05508-080, São Paulo, SP-
Descrição: dc.descriptionDepartamento de Ciências Biológicas UNESP-Bauru, Av. Eng. Luiz Edmundo Carrijo Coube, s/n, 17033-360, Bauru, SP-
Idioma: dc.languageen-
Relação: dc.relationPalaeontologia Electronica-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBrazil-
Palavras-chave: dc.subjectCoquina bed-
Palavras-chave: dc.subjectParaná Basin-
Palavras-chave: dc.subjectPermian-
Palavras-chave: dc.subjectStromatolite-
Palavras-chave: dc.subjectTeresina Formation-
Título: dc.titlePermian stromatolites associated with bivalve coquina beds-Angatuba, SP, Brazil (Teresina Formation, Paraná Basin)-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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