Tafonomy of macroinvertebrates and Albian marine ingression as recorded by the Romualdo Formation (Cretaceous, Araripe Basin, Brazil)
ABSTRACT: The Romualdo Formation, Araripe Basin, crops out in the municipality of Exu, Pernambuco State, exposing coquinas. Fauna survey, taphonomic analysis of the macrobenthos, and identification of sedimentary facies of the outcrop were carried out to contribute to paleoenvironmental understandin...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Geologia
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| Series: | Brazilian Journal of Geology |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892018000300519&lng=en&tlng=en |
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| author | Ludmila Alves Cadeira do Prado Gelson Luís Fambrini Alcina Magnólia Franca Barreto |
| author_facet | Ludmila Alves Cadeira do Prado Gelson Luís Fambrini Alcina Magnólia Franca Barreto |
| author_sort | Ludmila Alves Cadeira do Prado |
| collection | DOAJ |
| description | ABSTRACT: The Romualdo Formation, Araripe Basin, crops out in the municipality of Exu, Pernambuco State, exposing coquinas. Fauna survey, taphonomic analysis of the macrobenthos, and identification of sedimentary facies of the outcrop were carried out to contribute to paleoenvironmental understanding of the Romualdo Formation. The association of molluscs (Cerithium sp., Tylostoma ranchariensis, Aguileria dissita, Brachidontes araripensis and unidentified cassiopids) and echinoids of the species Bothryopneustes araripensis suggests sedimentation in the marine environment. The taphonomic similarities made possible the grouping of coquinas into two types. Coquinas type 1 exhibit characteristics of transport and reworking of bioclast generated by storms in proximal setting. Coquinas type 2 demonstrates echinoids in situ and articulated with spines connected to shells, suggesting a fast sedimentation by distal tempestite. Regarding sedimentary facies, the concentrations of invertebrates would have been formed in the transitional offshore zone of siliclastic platform. The results presented here evidence a broader distribution of echinoids and expand the geographic limits of the shallow marine environment in the Romualdo Formation. |
| first_indexed | 2024-12-11T09:01:56Z |
| format | Article |
| id | doaj.art-63a058afb3ef425aac427ee348fb2cda |
| institution | Directory Open Access Journal |
| issn | 2317-4692 |
| language | English |
| last_indexed | 2024-12-11T09:01:56Z |
| publisher | Sociedade Brasileira de Geologia |
| record_format | Article |
| series | Brazilian Journal of Geology |
| spelling | doaj.art-63a058afb3ef425aac427ee348fb2cda2022-12-22T01:13:43ZengSociedade Brasileira de GeologiaBrazilian Journal of Geology2317-469248351953110.1590/2317-4889201820180048S2317-48892018000300519Tafonomy of macroinvertebrates and Albian marine ingression as recorded by the Romualdo Formation (Cretaceous, Araripe Basin, Brazil)Ludmila Alves Cadeira do PradoGelson Luís FambriniAlcina Magnólia Franca BarretoABSTRACT: The Romualdo Formation, Araripe Basin, crops out in the municipality of Exu, Pernambuco State, exposing coquinas. Fauna survey, taphonomic analysis of the macrobenthos, and identification of sedimentary facies of the outcrop were carried out to contribute to paleoenvironmental understanding of the Romualdo Formation. The association of molluscs (Cerithium sp., Tylostoma ranchariensis, Aguileria dissita, Brachidontes araripensis and unidentified cassiopids) and echinoids of the species Bothryopneustes araripensis suggests sedimentation in the marine environment. The taphonomic similarities made possible the grouping of coquinas into two types. Coquinas type 1 exhibit characteristics of transport and reworking of bioclast generated by storms in proximal setting. Coquinas type 2 demonstrates echinoids in situ and articulated with spines connected to shells, suggesting a fast sedimentation by distal tempestite. Regarding sedimentary facies, the concentrations of invertebrates would have been formed in the transitional offshore zone of siliclastic platform. The results presented here evidence a broader distribution of echinoids and expand the geographic limits of the shallow marine environment in the Romualdo Formation.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892018000300519&lng=en&tlng=enechinoidsmolluskstempestitesobrution depositsSouth America |
| spellingShingle | Ludmila Alves Cadeira do Prado Gelson Luís Fambrini Alcina Magnólia Franca Barreto Tafonomy of macroinvertebrates and Albian marine ingression as recorded by the Romualdo Formation (Cretaceous, Araripe Basin, Brazil) Brazilian Journal of Geology echinoids mollusks tempestites obrution deposits South America |
| title | Tafonomy of macroinvertebrates and Albian marine ingression as recorded by the Romualdo Formation (Cretaceous, Araripe Basin, Brazil) |
| title_full | Tafonomy of macroinvertebrates and Albian marine ingression as recorded by the Romualdo Formation (Cretaceous, Araripe Basin, Brazil) |
| title_fullStr | Tafonomy of macroinvertebrates and Albian marine ingression as recorded by the Romualdo Formation (Cretaceous, Araripe Basin, Brazil) |
| title_full_unstemmed | Tafonomy of macroinvertebrates and Albian marine ingression as recorded by the Romualdo Formation (Cretaceous, Araripe Basin, Brazil) |
| title_short | Tafonomy of macroinvertebrates and Albian marine ingression as recorded by the Romualdo Formation (Cretaceous, Araripe Basin, Brazil) |
| title_sort | tafonomy of macroinvertebrates and albian marine ingression as recorded by the romualdo formation cretaceous araripe basin brazil |
| topic | echinoids mollusks tempestites obrution deposits South America |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892018000300519&lng=en&tlng=en |
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