| 1. Identificação | |
| Tipo de Referência | ePrint (Electronic Source) |
| Site | mtc-m16c.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Repositório | sid.inpe.br/ePrint@80/2006/04.28.16.51 |
| Última Atualização | 2006:05.02.20.24.35 (UTC) administrator |
| Repositório de Metadados | sid.inpe.br/ePrint@80/2006/04.28.16.51.58 |
| Última Atualização dos Metadados | 2018:06.04.04.12.45 (UTC) administrator |
| Chave de Citação | RossettiNett:2006:FiEvMa |
| Título | First evidence of marine influence in the Cretaceous of the Amazonas Basin, Brazil  |
| Ano | 2006 |
| Data de Acesso | 14 maio 2024 |
| Tipo de Suporte | On-line |
| Tipo Secundário | PRE PI |
| Número de Arquivos | 2 |
| Tamanho | 3557 KiB |
| 2. Contextualização | |
| Autor | 1 Rossetti, Dilce de Fátima 2 Netto, Renata Guimarães |
| Identificador de Curriculo | 1 8JMKD3MGP5W/3C9JGTQ |
| Grupo | 1 DSR-INPE-MCT-BR |
| Afiliação | 1 INPE 2 UNISINOS |
| Endereço de e-Mail | rossetti@dsr.inpe.br |
| Publicação Alternativa | Cretaceous Research |
| Produtor | Instituto Nacional de Pesquisas Espaciais |
| Cidade | São José dos Campos |
| Estágio da Publicação Alternativa | published |
| Avanço | ePrint update |
| Histórico (UTC) | 2006-05-02 20:24:35 :: rossetti -> banon :: 2006-07-05 12:08:17 :: banon -> rossetti :: 2006-12-06 09:30:30 :: rossetti -> marciana :: 2006-12-14 12:51:34 :: marciana -> administrator :: 2007-11-28 19:26:07 :: administrator -> marciana :: 2008-04-26 01:39:59 :: marciana -> administrator :: 2018-06-04 04:12:45 :: administrator -> marciana :: 2006 |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | concluido |
| Transferível | 1 |
| Palavras-Chave | Bacia do Amazonas influência marinha reconstituição paleoambiental sedimentologia icnologia |
| Resumo | The distinction between open marine and continental strata in the geological record is, in general, straightforward, but the recognition of transitional depositional settings might be problematic, as they produce sediments formed by a mixture of marine and non-marine processes. The interpretations are particularly problematic in successions that lack fossils, such that the analysis of the depositional setting has to rely solely on comprehension of the physical sedimentary structures. Many papers published in recent years have contributed to our understanding of the sedimentary imprint of marine processes, particularly involving tidal currents and storm waves (e.g., Boersma and Terwindt, 1981; Dott and Bourgeois, 1982; Walker, 1984; Yang and Nio, 1985; McCrory and Walker, 1986; Arnott and Southard, 1990; Leckie and Singh, 1991; Nio and Yang, 1991; Shanley et al., 1992; Arnott, 1992, 1993; Cheel and Middleton, 1993; Hadley and Elliot, 1993; Amos et al., 1996). As a result, many continental deposits recorded in the literature may be partly of marine origin. The sedimentological criteria that aid recognition of tidal and storm deposits has helped provide new interpretations for many Cretaceous deposits exposed in the northern Brazilian marginal basins, which are dominated by transitional marine deposits. Hence, a number of studies undertaken during the last ten years on exposures of Albian to Cenomanian rocks of the São Luís-Grajaú and Cametá (Marajó Graben System) basins, have demonstrated the significance of tidal currents and storm waves as dominant depositional agents, even in southernmost areas at the basin margins, located several hundreds of kilometers from the modern coastline (e.g., Rossetti, 1998; Rossetti et al., 2000; Rossetti and Santos Jr., 2003; Rossetti and Góes, 2004). These authors have shown that shallow-marine to transitional environments were extensive as a result of extensive marine incursions throughout these basins; this idea contrast with previous suggestions of an entirely continental origin (e.g., Petri and Fúlfaro, 1983). Transgressions of such large magnitude should have had an influence in nearby localities to the west (in the the intracratonic Amazonas Basin), particularly considering that this was an area of overall low relief since at least the Cretaceous. Despite this possibility, the Cretaceous of Amazonas Basin bears no record of marine or marginal marine sediments. The 500-m thick Alter do Chão Formation is comprised of siliciclastic red beds (sandstones and mudstones) that have been interpreted as continental in origin (e.g., Daemon, 1975; Dino et al., 1999). A lack of widespread fossil collecting and sedimentologic studies, however, has precluded full recognition of the sedimentary processes that led to the formation of this sedimentary unit. This paper provides a detailed description of the sedimentary features preserved in the Alter do Chão Formation that crops out along the left side of the Amazonas River, near Careiro Island, around 50 km to the east of Manaus, in the middle of the Amazonas Basin (Fig. 1). Our investigations has revealed a set of exposures with well-preserved physical and biogenic structures, allowing more detailed interpretations of their mode of deposition. So far, studies of this nature have not been carried out in the Alter do Chão Formation. As a result, our knowledge of this unit has been based mostly on regional geological studies. In this work, we have integrated sedimentologic and ichnologic interpretations in order to propose that the Alter do Chão Formation is not entirely continental in origin, as features suggestive of marine influence are abundant throughout the exposures. The data presented herein lead us to suggest that Cretaceous transgressions might have been much more widespread in Brazilian territory than initially proposed, resulting in submergence of large continental areas, even within intracratonic basins. |
| Área | SRE |
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > First evidence of... |
| Conteúdo da Pasta doc | acessar |
| Conteúdo da Pasta source | não têm arquivos |
| Conteúdo da Pasta agreement | não têm arquivos |
| 4. Condições de acesso e uso | |
| URL dos dados | http://urlib.net/ibi/sid.inpe.br/ePrint@80/2006/04.28.16.51 |
| URL dos dados zipados | http://urlib.net/zip/sid.inpe.br/ePrint@80/2006/04.28.16.51 |
| Arquivo Alvo | v2.pdf |
| Grupo de Usuários | administrator banon marciana rossetti |
| Visibilidade | shown |
| Permissão de Atualização | transferida para marciana |
| 5. Fontes relacionadas | |
| Edição Posterior | sid.inpe.br/ePrint@80/2006/12.06.09.30 |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3ER446E |
| Lista de Itens Citando | sid.inpe.br/mtc-m21/2012/07.13.14.44.37 1 |
| Acervo Hospedeiro | sid.inpe.br/mtc-m18@80/2008/03.17.15.17 |
| 6. Notas | |
| Notas | Volume 24, páginas 513 a 528 |
| Campos Vazios | accessyear archivingpolicy archivist contenttype copyholder copyright creatorhistory descriptionlevel dissemination doi edition electronicmailaddress format identifier isbn issn label language lastupdatedate lineage mark mirrorrepository orcid parameterlist parentrepositories previousedition previouslowerunit project readergroup readpermission rightsholder schedulinginformation secondarydate secondarykey secondarymark session shorttitle sponsor subject tertiarymark tertiarytype url versiontype |
| 7. Controle da descrição | |
| e-Mail (login) | marciana |
| atualizar | |