Geomorphological and stratigraphic evolution of a fluvial incision in the coastal plain and inner continental shelf in southern Brazil
This paper describes the evolution of a sector of the southern coastal plain of the Pelotas Basin, southern Brazil, between the last Pleistocene sea-level lowstand and the Holocene highstand, based on geomorphology and high-resolution stratigraphy. A fluvial drainage system associated with an incise...
- Autores:
-
Barboza, Eduardo G.
Dillenburg, Sérgio R.
Lopes, Renato P.
Rosa, Maria Luiza C.C.
Caron, Felipe
Abreu, Vitor
Manzolli, Rogério P.
Nunes, José Carlos R.
Weschenfelder, Jair
Tomazelli, Luiz J.
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2021
- Institución:
- Corporación Universidad de la Costa
- Repositorio:
- REDICUC - Repositorio CUC
- Idioma:
- eng
- OAI Identifier:
- oai:repositorio.cuc.edu.co:11323/8434
- Acceso en línea:
- https://hdl.handle.net/11323/8434
https://doi.org/10.1016/j.margeo.2021.106514
https://repositorio.cuc.edu.co/
- Palabra clave:
- Taim swamp
Paleo-drainage
Mirim Lagoon
Holocene/Late-Pleistocene
- Rights
- openAccess
- License
- Attribution-NonCommercial-NoDerivatives 4.0 International
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| dc.title.spa.fl_str_mv |
Geomorphological and stratigraphic evolution of a fluvial incision in the coastal plain and inner continental shelf in southern Brazil |
| title |
Geomorphological and stratigraphic evolution of a fluvial incision in the coastal plain and inner continental shelf in southern Brazil |
| spellingShingle |
Geomorphological and stratigraphic evolution of a fluvial incision in the coastal plain and inner continental shelf in southern Brazil Taim swamp Paleo-drainage Mirim Lagoon Holocene/Late-Pleistocene |
| title_short |
Geomorphological and stratigraphic evolution of a fluvial incision in the coastal plain and inner continental shelf in southern Brazil |
| title_full |
Geomorphological and stratigraphic evolution of a fluvial incision in the coastal plain and inner continental shelf in southern Brazil |
| title_fullStr |
Geomorphological and stratigraphic evolution of a fluvial incision in the coastal plain and inner continental shelf in southern Brazil |
| title_full_unstemmed |
Geomorphological and stratigraphic evolution of a fluvial incision in the coastal plain and inner continental shelf in southern Brazil |
| title_sort |
Geomorphological and stratigraphic evolution of a fluvial incision in the coastal plain and inner continental shelf in southern Brazil |
| dc.creator.fl_str_mv |
Barboza, Eduardo G. Dillenburg, Sérgio R. Lopes, Renato P. Rosa, Maria Luiza C.C. Caron, Felipe Abreu, Vitor Manzolli, Rogério P. Nunes, José Carlos R. Weschenfelder, Jair Tomazelli, Luiz J. |
| dc.contributor.author.spa.fl_str_mv |
Barboza, Eduardo G. Dillenburg, Sérgio R. Lopes, Renato P. Rosa, Maria Luiza C.C. Caron, Felipe Abreu, Vitor Manzolli, Rogério P. Nunes, José Carlos R. Weschenfelder, Jair Tomazelli, Luiz J. |
| dc.subject.spa.fl_str_mv |
Taim swamp Paleo-drainage Mirim Lagoon Holocene/Late-Pleistocene |
| topic |
Taim swamp Paleo-drainage Mirim Lagoon Holocene/Late-Pleistocene |
| description |
This paper describes the evolution of a sector of the southern coastal plain of the Pelotas Basin, southern Brazil, between the last Pleistocene sea-level lowstand and the Holocene highstand, based on geomorphology and high-resolution stratigraphy. A fluvial drainage system associated with an incised valley developed during the Last Glacial Maximum (LGM) was identified. Two highresolution 2D and 2.5D geophysical profiles using Ground-Penetrating Radar (GPR) show a Pleistocene fluvial system's former path, starting close to its present mouth inside Mirim Lagoon crossing the coastal barriers and reaching the inner continental shelf, covering some 60 km across the coastal plain. During the LGM, with the sea-level at −120 to −130 m and the coastline positioned close to the shelf edge (distant 200 km from the present coastline), the fluvial system excavated a ~31.5-m deep channel. Two cores, 36 and 32 m long, show that the paleochannel was filled with sedimentary deposits after 19.4 ka BP, and the facies succession represents the transition from fluvial, to estuarine, to the coastal barrier, and finally to inner shelf depositional environments, generated by processes connected to LGM and the Postglacial Marine Transgression (PMT). The study region behaved as a sediment by-pass zone, connecting the adjacent coastal plain's inner portion with the inner continental shelf. The studied area presents an unusual record of the LGM at a coastal plain domain. |
| publishDate |
2021 |
| dc.date.accessioned.none.fl_str_mv |
2021-06-29T21:34:03Z |
| dc.date.available.none.fl_str_mv |
2021-06-29T21:34:03Z |
| dc.date.issued.none.fl_str_mv |
2021 |
| dc.type.spa.fl_str_mv |
Artículo de revista |
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http://purl.org/coar/resource_type/c_2df8fbb1 |
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http://purl.org/coar/resource_type/c_6501 |
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Text |
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info:eu-repo/semantics/article |
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http://purl.org/redcol/resource_type/ART |
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info:eu-repo/semantics/acceptedVersion |
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http://purl.org/coar/resource_type/c_6501 |
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acceptedVersion |
| dc.identifier.uri.spa.fl_str_mv |
https://hdl.handle.net/11323/8434 |
| dc.identifier.doi.spa.fl_str_mv |
https://doi.org/10.1016/j.margeo.2021.106514 |
| dc.identifier.instname.spa.fl_str_mv |
Corporación Universidad de la Costa |
| dc.identifier.reponame.spa.fl_str_mv |
REDICUC - Repositorio CUC |
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https://repositorio.cuc.edu.co/ |
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https://hdl.handle.net/11323/8434 https://doi.org/10.1016/j.margeo.2021.106514 https://repositorio.cuc.edu.co/ |
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Corporación Universidad de la Costa REDICUC - Repositorio CUC |
| dc.language.iso.none.fl_str_mv |
eng |
| language |
eng |
| dc.relation.references.spa.fl_str_mv |
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Barboza, Eduardo G.Dillenburg, Sérgio R.Lopes, Renato P.Rosa, Maria Luiza C.C.Caron, FelipeAbreu, VitorManzolli, Rogério P.Nunes, José Carlos R.Weschenfelder, JairTomazelli, Luiz J.2021-06-29T21:34:03Z2021-06-29T21:34:03Z2021https://hdl.handle.net/11323/8434https://doi.org/10.1016/j.margeo.2021.106514Corporación Universidad de la CostaREDICUC - Repositorio CUChttps://repositorio.cuc.edu.co/This paper describes the evolution of a sector of the southern coastal plain of the Pelotas Basin, southern Brazil, between the last Pleistocene sea-level lowstand and the Holocene highstand, based on geomorphology and high-resolution stratigraphy. A fluvial drainage system associated with an incised valley developed during the Last Glacial Maximum (LGM) was identified. Two highresolution 2D and 2.5D geophysical profiles using Ground-Penetrating Radar (GPR) show a Pleistocene fluvial system's former path, starting close to its present mouth inside Mirim Lagoon crossing the coastal barriers and reaching the inner continental shelf, covering some 60 km across the coastal plain. During the LGM, with the sea-level at −120 to −130 m and the coastline positioned close to the shelf edge (distant 200 km from the present coastline), the fluvial system excavated a ~31.5-m deep channel. Two cores, 36 and 32 m long, show that the paleochannel was filled with sedimentary deposits after 19.4 ka BP, and the facies succession represents the transition from fluvial, to estuarine, to the coastal barrier, and finally to inner shelf depositional environments, generated by processes connected to LGM and the Postglacial Marine Transgression (PMT). The study region behaved as a sediment by-pass zone, connecting the adjacent coastal plain's inner portion with the inner continental shelf. The studied area presents an unusual record of the LGM at a coastal plain domain.Barboza, Eduardo G.Dillenburg, Sérgio R.Lopes, Renato P.Rosa, Maria Luiza C.C.Caron, FelipeAbreu, VitorManzolli, Rogério P.Nunes, José Carlos R.Weschenfelder, JairTomazelli, Luiz J.application/pdfengAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Marine Geologyhttps://www.sciencedirect.com/science/article/abs/pii/S0025322721000967Taim swampPaleo-drainageMirim LagoonHolocene/Late-PleistoceneGeomorphological and stratigraphic evolution of a fluvial incision in the coastal plain and inner continental shelf in southern BrazilArtículo de revistahttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1Textinfo:eu-repo/semantics/articlehttp://purl.org/redcol/resource_type/ARTinfo:eu-repo/semantics/acceptedVersionJ.G.N. Abreu, L.J. 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Geol., 67 (3) (1959), pp. 269-277, 10.1086/626583PublicationORIGINALGeomorphological and stratigraphic evolution of a fluvial incision in the coastal plain and inner continental shelf in southern Brazil.pdfGeomorphological and stratigraphic evolution of a fluvial incision in the coastal plain and inner continental shelf in southern Brazil.pdfapplication/pdf107593https://repositorio.cuc.edu.co/bitstreams/e53fc716-90a3-4736-a0a0-530f9beb6743/downloadc7d798cd2493b2881e846c20e2cdf850MD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8805https://repositorio.cuc.edu.co/bitstreams/07fe88f1-64c6-487e-9054-3803a032056e/download4460e5956bc1d1639be9ae6146a50347MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-83196https://repositorio.cuc.edu.co/bitstreams/93a9c2ef-e679-4f6c-87b5-faa2d06a071b/downloade30e9215131d99561d40d6b0abbe9badMD53THUMBNAILGeomorphological and stratigraphic evolution of a fluvial incision in the coastal plain and inner continental shelf in southern Brazil.pdf.jpgGeomorphological and stratigraphic evolution of a fluvial incision in the coastal plain and inner continental shelf in southern Brazil.pdf.jpgimage/jpeg48510https://repositorio.cuc.edu.co/bitstreams/f663ca21-6921-42ea-97d3-12822239b64b/download89c74d4041f948231c466245b0aa4953MD54THUMBNAILGeomorphological and stratigraphic evolution of a fluvial incision in the coastal plain and inner continental shelf in southern Brazil.pdf.jpgGeomorphological and stratigraphic evolution of a fluvial incision in the coastal plain and inner continental shelf in southern Brazil.pdf.jpgimage/jpeg48510https://repositorio.cuc.edu.co/bitstreams/b7db966c-3ccd-4f79-b9c1-7fc8f9dee6ab/download89c74d4041f948231c466245b0aa4953MD54TEXTGeomorphological and stratigraphic evolution of a fluvial incision in the coastal plain and inner continental shelf in southern Brazil.pdf.txtGeomorphological and stratigraphic evolution of a fluvial incision in the coastal plain and inner continental shelf in southern 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