End of a modern geological myth: there are no rudists in Brazil! Paleobiogeographic implications
Autor(a) principal: | |
---|---|
Data de Publicação: | 2015 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/164689 |
Resumo: | Out of the few records of rudists from the Cretaceous strata of the South Atlantic coastal basins only two refer to Brazilian localities. However, petrographic analyses demonstrate that these shells should be assigned to Ostreids or to Pycnodontids rather than to Rudistids. More specifically, the domain considered herein, north of the Rio Grande Rise - Walvis Ridge barrier, was part of the warm-water tropical realm, but it was not part of the Mesogean domain because both Rudistids and Orbitolinas are missing. In addition, the scarcity of corals leads us to ascribe the taphonomic assemblage to the Chloralgal facies. Neither generalized hypersalinity or extreme sea-water temperatures seem to account for these biotic peculiarities. Instead, our alternative hypothesis favors the driving role played by oceanic circulation in the dispersal of the benthic organisms. |
id |
UNSP_4a7b7e57727bb0bd0bb3ac0691b78491 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/164689 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
End of a modern geological myth: there are no rudists in Brazil! Paleobiogeographic implicationsRudistsOstreidsPycnodontidscoralsOrbitolinidscalcareous algaeCretaceousAlbianCenomanianSouth AtlanticTethysMesogeaChloralgalpaleobiogeographyOut of the few records of rudists from the Cretaceous strata of the South Atlantic coastal basins only two refer to Brazilian localities. However, petrographic analyses demonstrate that these shells should be assigned to Ostreids or to Pycnodontids rather than to Rudistids. More specifically, the domain considered herein, north of the Rio Grande Rise - Walvis Ridge barrier, was part of the warm-water tropical realm, but it was not part of the Mesogean domain because both Rudistids and Orbitolinas are missing. In addition, the scarcity of corals leads us to ascribe the taphonomic assemblage to the Chloralgal facies. Neither generalized hypersalinity or extreme sea-water temperatures seem to account for these biotic peculiarities. Instead, our alternative hypothesis favors the driving role played by oceanic circulation in the dispersal of the benthic organisms.Smithsonian FellowshipCarbonatos do Brasil Project - PetrobrasUBO, Fac Tech Sci, Dept STU, F-29238 Brest, FranceUniv Kansas, Dept Ecol & Evolutionary Biol, Lawrence, KS 66045 USAUniv Estadual Paulista, Ctr Geosci Appl Petr UNESPetro, BR-13506900 Rio Claro, SP, BrazilDept Geol Aplicada, BR-13506900 Rio Claro, SP, BrazilUniv Estadual Paulista, Ctr Geosci Appl Petr UNESPetro, BR-13506900 Rio Claro, SP, BrazilCarnets GeologieUBOUniv KansasUniversidade Estadual Paulista (Unesp)Dept Geol AplicadaGranier, BrunoDias-Brito, Dimas [UNESP]2018-11-26T17:55:37Z2018-11-26T17:55:37Z2015-07-14info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article123-136application/pdfCarnets De Geologie. Brest Cedex 3: Carnets Geologie, v. 15, n. 9-11, p. 123-136, 2015.1634-0744http://hdl.handle.net/11449/164689WOS:000357992200003WOS000357992200003.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCarnets De Geologie0,496info:eu-repo/semantics/openAccess2023-10-20T06:07:28Zoai:repositorio.unesp.br:11449/164689Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-10-20T06:07:28Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
End of a modern geological myth: there are no rudists in Brazil! Paleobiogeographic implications |
title |
End of a modern geological myth: there are no rudists in Brazil! Paleobiogeographic implications |
spellingShingle |
End of a modern geological myth: there are no rudists in Brazil! Paleobiogeographic implications Granier, Bruno Rudists Ostreids Pycnodontids corals Orbitolinids calcareous algae Cretaceous Albian Cenomanian South Atlantic Tethys Mesogea Chloralgal paleobiogeography |
title_short |
End of a modern geological myth: there are no rudists in Brazil! Paleobiogeographic implications |
title_full |
End of a modern geological myth: there are no rudists in Brazil! Paleobiogeographic implications |
title_fullStr |
End of a modern geological myth: there are no rudists in Brazil! Paleobiogeographic implications |
title_full_unstemmed |
End of a modern geological myth: there are no rudists in Brazil! Paleobiogeographic implications |
title_sort |
End of a modern geological myth: there are no rudists in Brazil! Paleobiogeographic implications |
author |
Granier, Bruno |
author_facet |
Granier, Bruno Dias-Brito, Dimas [UNESP] |
author_role |
author |
author2 |
Dias-Brito, Dimas [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
UBO Univ Kansas Universidade Estadual Paulista (Unesp) Dept Geol Aplicada |
dc.contributor.author.fl_str_mv |
Granier, Bruno Dias-Brito, Dimas [UNESP] |
dc.subject.por.fl_str_mv |
Rudists Ostreids Pycnodontids corals Orbitolinids calcareous algae Cretaceous Albian Cenomanian South Atlantic Tethys Mesogea Chloralgal paleobiogeography |
topic |
Rudists Ostreids Pycnodontids corals Orbitolinids calcareous algae Cretaceous Albian Cenomanian South Atlantic Tethys Mesogea Chloralgal paleobiogeography |
description |
Out of the few records of rudists from the Cretaceous strata of the South Atlantic coastal basins only two refer to Brazilian localities. However, petrographic analyses demonstrate that these shells should be assigned to Ostreids or to Pycnodontids rather than to Rudistids. More specifically, the domain considered herein, north of the Rio Grande Rise - Walvis Ridge barrier, was part of the warm-water tropical realm, but it was not part of the Mesogean domain because both Rudistids and Orbitolinas are missing. In addition, the scarcity of corals leads us to ascribe the taphonomic assemblage to the Chloralgal facies. Neither generalized hypersalinity or extreme sea-water temperatures seem to account for these biotic peculiarities. Instead, our alternative hypothesis favors the driving role played by oceanic circulation in the dispersal of the benthic organisms. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-07-14 2018-11-26T17:55:37Z 2018-11-26T17:55:37Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Carnets De Geologie. Brest Cedex 3: Carnets Geologie, v. 15, n. 9-11, p. 123-136, 2015. 1634-0744 http://hdl.handle.net/11449/164689 WOS:000357992200003 WOS000357992200003.pdf |
identifier_str_mv |
Carnets De Geologie. Brest Cedex 3: Carnets Geologie, v. 15, n. 9-11, p. 123-136, 2015. 1634-0744 WOS:000357992200003 WOS000357992200003.pdf |
url |
http://hdl.handle.net/11449/164689 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Carnets De Geologie 0,496 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
123-136 application/pdf |
dc.publisher.none.fl_str_mv |
Carnets Geologie |
publisher.none.fl_str_mv |
Carnets Geologie |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803649470939791360 |