Taphonomy of condensed shell storm beds of the Teresina Formation in Rio Preto (State of Paraná, Middle Permian, Paraná Basin): Paleoenvironmental implications

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorNeves, Jacqueline Peixoto-
Autor(es): dc.creatorDavies, Rosemarie Rohn-
Autor(es): dc.creatorSimões, Marcello Guimarães-
Data de aceite: dc.date.accessioned2025-08-21T18:27:50Z-
Data de disponibilização: dc.date.available2025-08-21T18:27:50Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2011-01-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.5327/z1519-874x2011000300008-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/226654-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/226654-
Descrição: dc.descriptionThe deposits of the Permian Teresina Formation are mainly characterized by fi ne-grained siliciclastic rocks and centimetric intercalations of tempestites (bioclastic sandstones and coquinas). Despite the relevance of the bivalve-rich carbonate beds of the Teresina Formation to paleoenvironmental studies, their taphonomy is still poorly studied. The fossil concentration studied in this work was found in a quarry in the city of Irati, Rio Preto district, Paraná State. The fossil concentration is located in the middle/upper portion of the unit, far from the top. The studied bed is a bioclastic, intraclastic, peloidal, grainstone/ packstone, with abundant bivalve shell fragments, pelitic and micritic intraclasts, peloids, rare ooids and oncoids, as well as permineralized of Lycophyta microphylles and fi sh scales. The grains of this carbonate concentration show: high degree of time-averaging, variable degree of packing (dense to disperse), no sorting and chaotic orientation. Notably, the concentration includes a mixture of elements which are indicative of: a) restrictive, low energy, carbonate environment (peloids, ooids and oncoids); b) subaerial environment surrounding the main body of water (Lycophyta microphylles) and c) quiet-water environment punctuated by storm events, where the suspension-feeding bivalves thrived. At least four depositional events caused by storm fl ows were recorded. The amalgamated nature of the bed is a result of storm events in an intracratonic basin with very low seafl oor slope and low rates of sedimentation and subsidence.-
Descrição: dc.descriptionDepartamento de Zoologia Instituto de Biociências UNESP, Distrito de Rubião Jr. s/n, CEP 18618-000, Botucatu, SP-
Descrição: dc.descriptionDepartamento de Geologia Aplicada IGCE UNESP, Rio Claro, SP-
Descrição: dc.descriptionDepartamento de Zoologia Instituto de Biociências UNESP, Distrito de Rubião Jr. s/n, CEP 18618-000, Botucatu, SP-
Descrição: dc.descriptionDepartamento de Geologia Aplicada IGCE UNESP, Rio Claro, SP-
Formato: dc.format131-147-
Idioma: dc.languagept_BR-
Relação: dc.relationGeologia USP - Serie Cientifica-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBivalve mollusk-
Palavras-chave: dc.subjectCarbonate-
Palavras-chave: dc.subjectParana Basin-
Palavras-chave: dc.subjectPassa Dois Group-
Palavras-chave: dc.subjectPermian-
Palavras-chave: dc.subjectTempestite-
Título: dc.titleTaphonomy of condensed shell storm beds of the Teresina Formation in Rio Preto (State of Paraná, Middle Permian, Paraná Basin): Paleoenvironmental implications-
Título: dc.titleTafonomia de Tempestitos Conchíferos Amalgamados da Formação Teresina em Rio Preto (Estado do Paraná, Permiano Médio, Bacia do Paraná) e suas Implicações Paleoambientais-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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