Considerações sobre Estromatólito do Tipo Domal da Lagoa Salgada, Estado do Rio de Janeiro, Brasil.
The lagoa Salgada is situated on the north coast of the State of Rio de Janeiro, between the districts of Campos dos Goytacazes and São João da Barra, at 41o00’30’’ W and 21o54’10’’S. In the margins of the lagoon the presence of recent stromatolitic constructions was verified. The stromatolite may b...
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| Format: | Article |
| Language: | English |
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Universidade Federal do Rio de Janeiro
2007-07-01
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| Series: | Anuário do Instituto de Geociências |
| Subjects: | |
| Online Access: | http://www.anuario.igeo.ufrj.br/anuario_2007_1/2007_1_50_57.pdf |
| _version_ | 1797970261471920128 |
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| author | Loreine Hermida Silva e Silva Anderson Andrade Cavalcanti Iespa Cynthia Moreira Damazio-Iespa |
| author_facet | Loreine Hermida Silva e Silva Anderson Andrade Cavalcanti Iespa Cynthia Moreira Damazio-Iespa |
| author_sort | Loreine Hermida Silva e Silva |
| collection | DOAJ |
| description | The lagoa Salgada is situated on the north coast of the State of Rio de Janeiro, between the districts of Campos dos Goytacazes and São João da Barra, at 41o00’30’’ W and 21o54’10’’S. In the margins of the lagoon the presence of recent stromatolitic constructions was verified. The stromatolite may be defined as lithified biosedimentarystructure, growing through the increase of sediment blade trapping by the carbonate precipitation as result of microbian organism activity. The objective of this study was to describe and to determine the internal morphology of domal type stromatolite of the lagoa Salgada. Through cutting, three different stages wereobserved: the first (base) is present as a thrombolitic stage with spread blade; the second (intermediary) is a and continuous blade; the third (top) is stromatolitic and the most recent stage of the structure, presenting continuous blade and with interruptions rare. Besides the presence of cyanobacteria and mollusk shells, were observed also internee palinomorphs inside the domal stromatolite. Itwas possible to observe that filament cyanobacteria contributed to the formation of blade of domal stromatolite and the microgastropod contributed for the destruction of the blade. |
| first_indexed | 2024-04-11T03:15:12Z |
| format | Article |
| id | doaj.art-b1657bcf19aa436387b23a6f378f8edf |
| institution | Directory Open Access Journal |
| issn | 0101-9759 |
| language | English |
| last_indexed | 2024-04-11T03:15:12Z |
| publishDate | 2007-07-01 |
| publisher | Universidade Federal do Rio de Janeiro |
| record_format | Article |
| series | Anuário do Instituto de Geociências |
| spelling | doaj.art-b1657bcf19aa436387b23a6f378f8edf2023-01-02T10:46:04ZengUniversidade Federal do Rio de JaneiroAnuário do Instituto de Geociências0101-97592007-07-013015057Considerações sobre Estromatólito do Tipo Domal da Lagoa Salgada, Estado do Rio de Janeiro, Brasil.Loreine Hermida Silva e SilvaAnderson Andrade Cavalcanti IespaCynthia Moreira Damazio-IespaThe lagoa Salgada is situated on the north coast of the State of Rio de Janeiro, between the districts of Campos dos Goytacazes and São João da Barra, at 41o00’30’’ W and 21o54’10’’S. In the margins of the lagoon the presence of recent stromatolitic constructions was verified. The stromatolite may be defined as lithified biosedimentarystructure, growing through the increase of sediment blade trapping by the carbonate precipitation as result of microbian organism activity. The objective of this study was to describe and to determine the internal morphology of domal type stromatolite of the lagoa Salgada. Through cutting, three different stages wereobserved: the first (base) is present as a thrombolitic stage with spread blade; the second (intermediary) is a and continuous blade; the third (top) is stromatolitic and the most recent stage of the structure, presenting continuous blade and with interruptions rare. Besides the presence of cyanobacteria and mollusk shells, were observed also internee palinomorphs inside the domal stromatolite. Itwas possible to observe that filament cyanobacteria contributed to the formation of blade of domal stromatolite and the microgastropod contributed for the destruction of the blade.http://www.anuario.igeo.ufrj.br/anuario_2007_1/2007_1_50_57.pdfStromatolitethrombolitecyanobacterialagoa Salgada |
| spellingShingle | Loreine Hermida Silva e Silva Anderson Andrade Cavalcanti Iespa Cynthia Moreira Damazio-Iespa Considerações sobre Estromatólito do Tipo Domal da Lagoa Salgada, Estado do Rio de Janeiro, Brasil. Anuário do Instituto de Geociências Stromatolite thrombolite cyanobacteria lagoa Salgada |
| title | Considerações sobre Estromatólito do Tipo Domal da Lagoa Salgada, Estado do Rio de Janeiro, Brasil. |
| title_full | Considerações sobre Estromatólito do Tipo Domal da Lagoa Salgada, Estado do Rio de Janeiro, Brasil. |
| title_fullStr | Considerações sobre Estromatólito do Tipo Domal da Lagoa Salgada, Estado do Rio de Janeiro, Brasil. |
| title_full_unstemmed | Considerações sobre Estromatólito do Tipo Domal da Lagoa Salgada, Estado do Rio de Janeiro, Brasil. |
| title_short | Considerações sobre Estromatólito do Tipo Domal da Lagoa Salgada, Estado do Rio de Janeiro, Brasil. |
| title_sort | consideracoes sobre estromatolito do tipo domal da lagoa salgada estado do rio de janeiro brasil |
| topic | Stromatolite thrombolite cyanobacteria lagoa Salgada |
| url | http://www.anuario.igeo.ufrj.br/anuario_2007_1/2007_1_50_57.pdf |
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