Multiple short-lived marine incursions into the interior of Southwest Gondwana during the Aptian

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Autor(es): dc.contributorUnisinos University (UNISINOS)-
Autor(es): dc.contributorUnisinos University-
Autor(es): dc.contributorUniversidade Federal de Mato Grosso do Sul (UFMS)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorResearch Center (CENPES)-
Autor(es): dc.contributorGraduate Program in Geology-
Autor(es): dc.creatorFauth, Gerson-
Autor(es): dc.creatorStrohschoen, Oscar-
Autor(es): dc.creatorBaecker-Fauth, Simone-
Autor(es): dc.creatorLuft-Souza, Fernanda-
Autor(es): dc.creatordos Santos Filho, Marcos Antonio Batista-
Autor(es): dc.creatorSantos, Alessandra-
Autor(es): dc.creatorBruno, Mauro Daniel Rodrigues-
Autor(es): dc.creatorMescolotti, Patrícia-
Autor(es): dc.creatorKrahl, Guilherme-
Autor(es): dc.creatorArai, Mitsuru-
Autor(es): dc.creatorde Oliveira Lima, Francisco Henrique-
Autor(es): dc.creatorAssine, Mario Luis-
Data de aceite: dc.date.accessioned2025-08-21T19:34:00Z-
Data de disponibilização: dc.date.available2025-08-21T19:34:00Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-08-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.marmicro.2024.102389-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/307348-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/307348-
Descrição: dc.descriptionThe Lower Cretaceous sediments of the Sanfranciscana Basin, southeast Brazil, are considered to have been deposited under a Gondwanan continental context. However, different authors have occasionally observed marine elements in these same deposits. This study analyzes samples from five sections of the Sanfranciscana Basin, Quiricó and Três Barras formations, to characterize the paleoenvironment around these marine incursions. We recovered continental (non-marine ostracods and palynomorphs) and marine microfossils (e.g., foraminifera, radiolarians, and ascidian spicules). The alternance of quartz-rich biogenic chert and claystone might be indicative of the occurrence of radiolarites in the studied sessions. The presence of the radiolarian genus Turbocapsula sp., the radiolarian species Holocryptocapsa fallax, and the palynomorph Tucanopollis crisopolensis enabled us to date the interval as early Aptian. Based on the lithologies and microfossils recovered, we interpreted the studied interval as a continental setting that was episodically subjected to marine incursions. We propose three successive paleoenvironmental scenarios: (1) an initial lacustrine depositional setting with a non-marine biota; (2) a second stage, characterized by the presence of episodic marine influence in the sedimentary succession (as evidenced by radiolarians, foraminifera and ascidians), and (3) the return to continental settings dominated by aeolian dune fields. These environmental scenarios characterize the initial development of the Central Segment of the South Atlantic Ocean.-
Descrição: dc.descriptionTechnological Institute of Paleoceanography and Climate Changes (itt Oceaneon) Unisinos University (UNISINOS), Avenida Unisinos, 950, Cristo Rei-
Descrição: dc.descriptionGraduate Program in Geology Unisinos University, Avenida Unisinos, 950, Cristo Rei-
Descrição: dc.descriptionFaculty of Engineering Architecture Urbanism and Geography Federal University of Mato Grosso do Sul (UFMS)-
Descrição: dc.descriptionCenter for Applied Natural Sciences (UNESPetro) São Paulo State University (UNESP)-
Descrição: dc.descriptionPetrobras Research Center (CENPES), Av. Horácio Macedo, 950, Cidade Universitária, Ilha do Fundão-
Descrição: dc.descriptionUniversity of Brasilia Institute of Geosciences Graduate Program in Geology-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Geosciences-
Descrição: dc.descriptionCenter for Applied Natural Sciences (UNESPetro) São Paulo State University (UNESP)-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Geosciences-
Idioma: dc.languageen-
Relação: dc.relationMarine Micropaleontology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectInterior Brazilian basins-
Palavras-chave: dc.subjectMarine incursions-
Palavras-chave: dc.subjectMarine microfossils-
Palavras-chave: dc.subjectZone Turbocapsula spp.-
Título: dc.titleMultiple short-lived marine incursions into the interior of Southwest Gondwana during the Aptian-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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