The Quaternary alluvial systems tract of the Pantanal Basin, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Geology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892015000300475 |
Resumo: | ABSTRACT The Pantanal Basin is an active sedimentary basin in central-west Brazil that consists of a complex alluvial systems tract characterized by the interaction between different river systems developed in one of the largest wetlands in the world. The Paraguay River is the trunk river system that drains the water and part of the sediment load received from areas outside of the basin. Depositional styles vary considerably along the river profiles throughout the basin, with the development of entrenched meandering belts, anastomosing reaches, and floodplain ponds. Paleodrainage patterns are preserved on the surface of abandoned lobes of fluvial fans, which also exhibit many degradational channels. Here, we propose a novel classification scheme according to which the geomorphology, hydrological regime and sedimentary dynamics of these fluvial systems are determined by the geology and geomorphology of the source areas. In this way, the following systems are recognized and described: (I) the Paraguay trunk-river plains; (II) fluvial fans sourced by the tablelands catchment area; (III) fluvial fans sourced by lowlands; and (IV) fluvial interfans. We highlight the importance of considering the influences of source areas when interpreting contrasting styles of fluvial architectures in the rock record. |
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The Quaternary alluvial systems tract of the Pantanal Basin, BrazilPantanalwetlandsfluvial megafanmodern depositional environmentsalluvial systems tract.ABSTRACT The Pantanal Basin is an active sedimentary basin in central-west Brazil that consists of a complex alluvial systems tract characterized by the interaction between different river systems developed in one of the largest wetlands in the world. The Paraguay River is the trunk river system that drains the water and part of the sediment load received from areas outside of the basin. Depositional styles vary considerably along the river profiles throughout the basin, with the development of entrenched meandering belts, anastomosing reaches, and floodplain ponds. Paleodrainage patterns are preserved on the surface of abandoned lobes of fluvial fans, which also exhibit many degradational channels. Here, we propose a novel classification scheme according to which the geomorphology, hydrological regime and sedimentary dynamics of these fluvial systems are determined by the geology and geomorphology of the source areas. In this way, the following systems are recognized and described: (I) the Paraguay trunk-river plains; (II) fluvial fans sourced by the tablelands catchment area; (III) fluvial fans sourced by lowlands; and (IV) fluvial interfans. We highlight the importance of considering the influences of source areas when interpreting contrasting styles of fluvial architectures in the rock record.Sociedade Brasileira de Geologia2015-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892015000300475Brazilian Journal of Geology v.45 n.3 2015reponame:Brazilian Journal of Geologyinstname:Sociedade Brasileira de Geologia (SBGEO)instacron:SBGEO10.1590/2317-4889201520150014info:eu-repo/semantics/openAccessAssine,Mario LuisMerino,Eder RenatoPupim,Fabiano do NascimentoMacedo,Hudson de AzevedoSantos,Mauricio Guerreiro Martinho doseng2015-11-23T00:00:00Zoai:scielo:S2317-48892015000300475Revistahttp://bjg.siteoficial.ws/index.htmhttps://old.scielo.br/oai/scielo-oai.phpsbgsede@sbgeo.org.br||claudio.riccomini@gmail.com2317-46922317-4692opendoar:2015-11-23T00:00Brazilian Journal of Geology - Sociedade Brasileira de Geologia (SBGEO)false |
dc.title.none.fl_str_mv |
The Quaternary alluvial systems tract of the Pantanal Basin, Brazil |
title |
The Quaternary alluvial systems tract of the Pantanal Basin, Brazil |
spellingShingle |
The Quaternary alluvial systems tract of the Pantanal Basin, Brazil Assine,Mario Luis Pantanal wetlands fluvial megafan modern depositional environments alluvial systems tract. |
title_short |
The Quaternary alluvial systems tract of the Pantanal Basin, Brazil |
title_full |
The Quaternary alluvial systems tract of the Pantanal Basin, Brazil |
title_fullStr |
The Quaternary alluvial systems tract of the Pantanal Basin, Brazil |
title_full_unstemmed |
The Quaternary alluvial systems tract of the Pantanal Basin, Brazil |
title_sort |
The Quaternary alluvial systems tract of the Pantanal Basin, Brazil |
author |
Assine,Mario Luis |
author_facet |
Assine,Mario Luis Merino,Eder Renato Pupim,Fabiano do Nascimento Macedo,Hudson de Azevedo Santos,Mauricio Guerreiro Martinho dos |
author_role |
author |
author2 |
Merino,Eder Renato Pupim,Fabiano do Nascimento Macedo,Hudson de Azevedo Santos,Mauricio Guerreiro Martinho dos |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Assine,Mario Luis Merino,Eder Renato Pupim,Fabiano do Nascimento Macedo,Hudson de Azevedo Santos,Mauricio Guerreiro Martinho dos |
dc.subject.por.fl_str_mv |
Pantanal wetlands fluvial megafan modern depositional environments alluvial systems tract. |
topic |
Pantanal wetlands fluvial megafan modern depositional environments alluvial systems tract. |
description |
ABSTRACT The Pantanal Basin is an active sedimentary basin in central-west Brazil that consists of a complex alluvial systems tract characterized by the interaction between different river systems developed in one of the largest wetlands in the world. The Paraguay River is the trunk river system that drains the water and part of the sediment load received from areas outside of the basin. Depositional styles vary considerably along the river profiles throughout the basin, with the development of entrenched meandering belts, anastomosing reaches, and floodplain ponds. Paleodrainage patterns are preserved on the surface of abandoned lobes of fluvial fans, which also exhibit many degradational channels. Here, we propose a novel classification scheme according to which the geomorphology, hydrological regime and sedimentary dynamics of these fluvial systems are determined by the geology and geomorphology of the source areas. In this way, the following systems are recognized and described: (I) the Paraguay trunk-river plains; (II) fluvial fans sourced by the tablelands catchment area; (III) fluvial fans sourced by lowlands; and (IV) fluvial interfans. We highlight the importance of considering the influences of source areas when interpreting contrasting styles of fluvial architectures in the rock record. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892015000300475 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892015000300475 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/2317-4889201520150014 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Geologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Geologia |
dc.source.none.fl_str_mv |
Brazilian Journal of Geology v.45 n.3 2015 reponame:Brazilian Journal of Geology instname:Sociedade Brasileira de Geologia (SBGEO) instacron:SBGEO |
instname_str |
Sociedade Brasileira de Geologia (SBGEO) |
instacron_str |
SBGEO |
institution |
SBGEO |
reponame_str |
Brazilian Journal of Geology |
collection |
Brazilian Journal of Geology |
repository.name.fl_str_mv |
Brazilian Journal of Geology - Sociedade Brasileira de Geologia (SBGEO) |
repository.mail.fl_str_mv |
sbgsede@sbgeo.org.br||claudio.riccomini@gmail.com |
_version_ |
1752122398365188096 |