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dc.contributor.author
Warren, Lucas Veríssimo
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Varejão, Filipe Giovanini
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Quaglio, Fernanda
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Simões, Marcello Guimarães
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Fürsich, Franz Theodor
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Poire, Daniel Gustavo
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Catto, Bruno
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Assine, Mario Luis
dc.date.available
2018-06-19T18:18:14Z
dc.date.issued
2017-01
dc.identifier.citation
Warren, Lucas Veríssimo; Varejão, Filipe Giovanini; Quaglio, Fernanda; Simões, Marcello Guimarães; Fürsich, Franz Theodor; et al.; Stromatolites from the Aptian Crato Formation, a hypersaline lake system in the Araripe Basin, northeastern Brazil; Springer Verlag Berlín; Facies; 63; 1; 1-2017
dc.identifier.issn
0172-9179
dc.identifier.uri
http://hdl.handle.net/11336/49360
dc.description.abstract
The origin of the Cretaceous laminites of the Crato Formation, Araripe Basin, northeastern Brazil, has been intensely debated since the beginning of the last century. The monotonous, up to 10-m-thick succession composed of very fine fossiliferous laminites in the middle of the unit lacked diagnostic features for assigning a chemically or biologically induced origin for this facies. The presence of a highly diverse and very well preserved allochthonous to parautochthonous fossil assemblage, associated with scattered halite pseudomorphs throughout the succession, led many authors to believe that these limestones were chemically deposited in a highly stressful, evaporitic shallow-water environment, such as a hypersaline lake close to marine environments. Recently, a micro- and ultrastructural analysis of the laminites yielded structures undoubtedly associated with a biological origin. Several examples of lithified in situ preserved coccoid and filamentous cells and extracellular polymeric substances suggest that the deposition of the laminated limestones was, at some levels, strongly influenced by microbial activity. Here, we record various examples of stromatolite microbialites (mounds, domes, and pseudo-columns) found at distinct stratigraphic levels in the middle part of the Crato Formation. Macro-, meso-, and microscopic features confirm the biologically induced mineralization and the existence of metabolic activity of microbes during the formation of the laminites. Biomat growth may also have played a major role in the excellent preservation of fossils in this famous Cretaceous Konservat-Lagerstätte from Brazil.
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application/pdf
dc.language.iso
eng
dc.publisher
Springer Verlag Berlín
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Aptian
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Araripe Basin
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Biologically Induced Carbonates
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Lower Cretaceous
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Microbialites
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Santana Group
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Meteorología y Ciencias Atmosféricas
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Stromatolites from the Aptian Crato Formation, a hypersaline lake system in the Araripe Basin, northeastern Brazil
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
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info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-06-18T21:21:01Z
dc.journal.volume
63
dc.journal.number
1
dc.journal.pais
Alemania
dc.journal.ciudad
Berlin
dc.description.fil
Fil: Warren, Lucas Veríssimo. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
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Fil: Varejão, Filipe Giovanini. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
dc.description.fil
Fil: Quaglio, Fernanda. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
dc.description.fil
Fil: Simões, Marcello Guimarães. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
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Fil: Fürsich, Franz Theodor. Friedrich Alexander Universität Erlangen Nürnberg; Alemania
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Fil: Poire, Daniel Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
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Fil: Catto, Bruno. Petróleo Brasileiro Matriz; Brasil
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Fil: Assine, Mario Luis. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
dc.journal.title
Facies
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1007/s10347-016-0484-6
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info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs10347-016-0484-6
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