Microbialite fields developed in a protected rocky coastline: The shallow carbonate ramp of the Aptian Romualdo Formation (Araripe Basin, NE Brazil)

Registro completo de metadados
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorVarejao, F. G.-
Autor(es): dc.creatorFuersich, F. T.-
Autor(es): dc.creatorWarren, L.-
Autor(es): dc.creatorMatos, S. A.-
Autor(es): dc.creatorRodrigues, M. G.-
Autor(es): dc.creatorAssine, M. L.-
Autor(es): dc.creatorSales, A. M. F.-
Autor(es): dc.creatorSimoes, M. G.-
Data de aceite: dc.date.accessioned2021-03-11T01:17:27Z-
Data de disponibilização: dc.date.available2021-03-11T01:17:27Z-
Data de envio: dc.date.issued2019-10-04-
Data de envio: dc.date.issued2019-10-04-
Data de envio: dc.date.issued2019-07-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.sedgeo.2019.06.003-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/186069-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/186069-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionPetrobras-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionProcesso FAPESP: 2016/13214-7-
Descrição: dc.descriptionProcesso FAPESP: 2017/20803-1-
Descrição: dc.descriptionProcesso FAPESP: 18/01750-7-
Descrição: dc.descriptionPetrobras: 2014/00519-9-
Descrição: dc.descriptionCNPq: 444070/2013-1-
Descrição: dc.descriptionCNPq: 401039/2013-5-
Descrição: dc.descriptionCNPq: 1082 30017/2015-3-
Descrição: dc.descriptionCNPq: 152385/2016-9-
Descrição: dc.descriptionCNPq: 301294/2018-6-
Descrição: dc.descriptionThe Aptian Romualdo Formation is a siliciclastic-dominated sedimentary unit recording the last marine ingression within the Cretaceous interior basins of northeastern Brazil. At the western margin of the Araripe Basin, rocks of the Romualdo Formation are mainly represented by carbonates resting abruptly over the Proterozoic crystalline basement. Detailed mapping and stratigraphic analysis revealed two stromatolite fields that were described and discussed for the first time. Several bioherms, biostromes and isolated stromatolites characterized by distinct microbialite morphologies associated with echinoid-rich strata have been identified, suggesting that hypersalinity, water depth and hydraulic conditions were the main factors controlling stromatolite morphogenesis. A cm-thick amalgamated bivalve rudstone, resting directly on the basement and representing a shell concentration formed above the fair-weather wave base was also recorded. Based on the regional distribution of the stromatolite types and associated sedimentary fades, we interpret the depositional environment as a local low gradient carbonate ramp deepening to the east. Our data robustly indicated that the western rocky shorelines of the Araripe Basin during the Aptian were populated by microbial mats and stromatolites in a condition analogous to the modern world-famous Hamelin Pool, Shark Bay, Western Australia. Finally, the development of stromatolites and echinoid-bearing microbialites at the western margin of the basin may be correlated with the formation of bakevelliid- and cassiopid-rich shell beds in the upper part of the Romualdo Formation at the eastern margin. (C) 2019 Elsevier B.V. All rights reserved.-
Formato: dc.format103-120-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier B.V.-
Relação: dc.relationSedimentary Geology-
Direitos: dc.rightsopenAccess-
Palavras-chave: dc.subjectStromatolites-
Palavras-chave: dc.subjectMicrobialites-
Palavras-chave: dc.subjectEchinoids-
Palavras-chave: dc.subjectBivalves-
Palavras-chave: dc.subjectShark Bay analogue-
Palavras-chave: dc.subjectLower Cretaceous-
Título: dc.titleMicrobialite fields developed in a protected rocky coastline: The shallow carbonate ramp of the Aptian Romualdo Formation (Araripe Basin, NE Brazil)-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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