The alluvial architecture of a suspended sediment dominated meandering river: the Río Bermejo, Argentina
- Autores
- Sambrook Smith, Gregory H.; Best, James L.; Leroy, Jessica Z.; Orfeo, Oscar
- Año de publicación
- 2016
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The alluvial architecture of fine-grained (silt-bed) meandering rivers remainspoorly understood in comparison to the extensive study given to sand-bed andgravel-bed channels. This paucity of knowledge stems, in part, from the difficultyof studying such modern rivers and deriving analogue information fromwhich to inform facies models for ancient sediments. This paper employs anew technique, the parametric echosounder, to quantify the subsurface structureof the Rıo Bermejo, Argentina, which is a predominantly silt-bed river witha large suspended sediment load. These results show that the parametricechosounder can provide high-resolution (decimetre) subsurface imaging fromfine-grained rivers that is equivalent to the more commonly used ground-penetratingradar that has been shown to work well in coarser-grained rivers. Analysisof the data reveals that the alluvial architecture of the Rıo Bermejo ischaracterized by large-scale inclined heterolithic stratification generated bypoint-bar evolution, and associated large-scale scour surfaces that result fromchannel migration. The small-scale and medium-scale structure of the sedimentaryarchitecture is generated by vertical accretion deposits, bed sets associatedwith small bars, dunes and climbing ripples and the cut and fill fromsmall cross-bar channels. This style of alluvial architecture is very differentfrom other modern fine-grained rivers reported in the literature that emphasizethe presence of oblique accretion. The Rıo Bermejo differs from these other riversbecause it is much more active, with very high rates of bank erosion andchannel migration. Modern examples of this type of highly active fine-grainedriver have been reported rarely in the literature, although ancient examples aremore prevalent and show similarities with the alluvial architecture of the RıoBermejo, which thus represents a useful analogue for their identification andinterpretation. Although the full spectrum of the sedimentology of fine-grainedrivers has yet to be revealed, meandering rivers dominated by lateral or obliqueaccretion probably represent end members of such channels, with the specificstyle of sedimentation being controlled by grain size and sediment load characteristics.
Fil: Sambrook Smith, Gregory H.. University Of Birmingham; Reino Unido
Fil: Best, James L.. University of Illinois. Urbana - Champaign; Estados Unidos
Fil: Leroy, Jessica Z.. University of Illinois. Urbana - Champaign; Estados Unidos
Fil: Orfeo, Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina - Materia
-
ALLUVIAL ARCHITECTURE
BERMEJO RIVER
SILT- BED
ARGENTINA
FINE-GRAINED
MEANDERING
PARAMETRIC ECHOSOUNDER - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/26531
Ver los metadatos del registro completo
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CONICET Digital (CONICET) |
spelling |
The alluvial architecture of a suspended sediment dominated meandering river: the Río Bermejo, ArgentinaSambrook Smith, Gregory H.Best, James L.Leroy, Jessica Z.Orfeo, OscarALLUVIAL ARCHITECTUREBERMEJO RIVERSILT- BEDARGENTINAFINE-GRAINEDMEANDERINGPARAMETRIC ECHOSOUNDERhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The alluvial architecture of fine-grained (silt-bed) meandering rivers remainspoorly understood in comparison to the extensive study given to sand-bed andgravel-bed channels. This paucity of knowledge stems, in part, from the difficultyof studying such modern rivers and deriving analogue information fromwhich to inform facies models for ancient sediments. This paper employs anew technique, the parametric echosounder, to quantify the subsurface structureof the Rıo Bermejo, Argentina, which is a predominantly silt-bed river witha large suspended sediment load. These results show that the parametricechosounder can provide high-resolution (decimetre) subsurface imaging fromfine-grained rivers that is equivalent to the more commonly used ground-penetratingradar that has been shown to work well in coarser-grained rivers. Analysisof the data reveals that the alluvial architecture of the Rıo Bermejo ischaracterized by large-scale inclined heterolithic stratification generated bypoint-bar evolution, and associated large-scale scour surfaces that result fromchannel migration. The small-scale and medium-scale structure of the sedimentaryarchitecture is generated by vertical accretion deposits, bed sets associatedwith small bars, dunes and climbing ripples and the cut and fill fromsmall cross-bar channels. This style of alluvial architecture is very differentfrom other modern fine-grained rivers reported in the literature that emphasizethe presence of oblique accretion. The Rıo Bermejo differs from these other riversbecause it is much more active, with very high rates of bank erosion andchannel migration. Modern examples of this type of highly active fine-grainedriver have been reported rarely in the literature, although ancient examples aremore prevalent and show similarities with the alluvial architecture of the RıoBermejo, which thus represents a useful analogue for their identification andinterpretation. Although the full spectrum of the sedimentology of fine-grainedrivers has yet to be revealed, meandering rivers dominated by lateral or obliqueaccretion probably represent end members of such channels, with the specificstyle of sedimentation being controlled by grain size and sediment load characteristics.Fil: Sambrook Smith, Gregory H.. University Of Birmingham; Reino UnidoFil: Best, James L.. University of Illinois. Urbana - Champaign; Estados UnidosFil: Leroy, Jessica Z.. University of Illinois. Urbana - Champaign; Estados UnidosFil: Orfeo, Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; ArgentinaWiley Blackwell Publishing, Inc2016-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/26531Sambrook Smith, Gregory H.; Best, James L.; Leroy, Jessica Z.; Orfeo, Oscar; The alluvial architecture of a suspended sediment dominated meandering river: the Río Bermejo, Argentina; Wiley Blackwell Publishing, Inc; Sedimentology; 63; 5; 3-2016; 1187-12080037-07460037-0746CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/sed.12256/abstractinfo:eu-repo/semantics/altIdentifier/doi/10.1111/sed.12256info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:44:22Zoai:ri.conicet.gov.ar:11336/26531instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:44:22.711CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
The alluvial architecture of a suspended sediment dominated meandering river: the Río Bermejo, Argentina |
title |
The alluvial architecture of a suspended sediment dominated meandering river: the Río Bermejo, Argentina |
spellingShingle |
The alluvial architecture of a suspended sediment dominated meandering river: the Río Bermejo, Argentina Sambrook Smith, Gregory H. ALLUVIAL ARCHITECTURE BERMEJO RIVER SILT- BED ARGENTINA FINE-GRAINED MEANDERING PARAMETRIC ECHOSOUNDER |
title_short |
The alluvial architecture of a suspended sediment dominated meandering river: the Río Bermejo, Argentina |
title_full |
The alluvial architecture of a suspended sediment dominated meandering river: the Río Bermejo, Argentina |
title_fullStr |
The alluvial architecture of a suspended sediment dominated meandering river: the Río Bermejo, Argentina |
title_full_unstemmed |
The alluvial architecture of a suspended sediment dominated meandering river: the Río Bermejo, Argentina |
title_sort |
The alluvial architecture of a suspended sediment dominated meandering river: the Río Bermejo, Argentina |
dc.creator.none.fl_str_mv |
Sambrook Smith, Gregory H. Best, James L. Leroy, Jessica Z. Orfeo, Oscar |
author |
Sambrook Smith, Gregory H. |
author_facet |
Sambrook Smith, Gregory H. Best, James L. Leroy, Jessica Z. Orfeo, Oscar |
author_role |
author |
author2 |
Best, James L. Leroy, Jessica Z. Orfeo, Oscar |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
ALLUVIAL ARCHITECTURE BERMEJO RIVER SILT- BED ARGENTINA FINE-GRAINED MEANDERING PARAMETRIC ECHOSOUNDER |
topic |
ALLUVIAL ARCHITECTURE BERMEJO RIVER SILT- BED ARGENTINA FINE-GRAINED MEANDERING PARAMETRIC ECHOSOUNDER |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The alluvial architecture of fine-grained (silt-bed) meandering rivers remainspoorly understood in comparison to the extensive study given to sand-bed andgravel-bed channels. This paucity of knowledge stems, in part, from the difficultyof studying such modern rivers and deriving analogue information fromwhich to inform facies models for ancient sediments. This paper employs anew technique, the parametric echosounder, to quantify the subsurface structureof the Rıo Bermejo, Argentina, which is a predominantly silt-bed river witha large suspended sediment load. These results show that the parametricechosounder can provide high-resolution (decimetre) subsurface imaging fromfine-grained rivers that is equivalent to the more commonly used ground-penetratingradar that has been shown to work well in coarser-grained rivers. Analysisof the data reveals that the alluvial architecture of the Rıo Bermejo ischaracterized by large-scale inclined heterolithic stratification generated bypoint-bar evolution, and associated large-scale scour surfaces that result fromchannel migration. The small-scale and medium-scale structure of the sedimentaryarchitecture is generated by vertical accretion deposits, bed sets associatedwith small bars, dunes and climbing ripples and the cut and fill fromsmall cross-bar channels. This style of alluvial architecture is very differentfrom other modern fine-grained rivers reported in the literature that emphasizethe presence of oblique accretion. The Rıo Bermejo differs from these other riversbecause it is much more active, with very high rates of bank erosion andchannel migration. Modern examples of this type of highly active fine-grainedriver have been reported rarely in the literature, although ancient examples aremore prevalent and show similarities with the alluvial architecture of the RıoBermejo, which thus represents a useful analogue for their identification andinterpretation. Although the full spectrum of the sedimentology of fine-grainedrivers has yet to be revealed, meandering rivers dominated by lateral or obliqueaccretion probably represent end members of such channels, with the specificstyle of sedimentation being controlled by grain size and sediment load characteristics. Fil: Sambrook Smith, Gregory H.. University Of Birmingham; Reino Unido Fil: Best, James L.. University of Illinois. Urbana - Champaign; Estados Unidos Fil: Leroy, Jessica Z.. University of Illinois. Urbana - Champaign; Estados Unidos Fil: Orfeo, Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina |
description |
The alluvial architecture of fine-grained (silt-bed) meandering rivers remainspoorly understood in comparison to the extensive study given to sand-bed andgravel-bed channels. This paucity of knowledge stems, in part, from the difficultyof studying such modern rivers and deriving analogue information fromwhich to inform facies models for ancient sediments. This paper employs anew technique, the parametric echosounder, to quantify the subsurface structureof the Rıo Bermejo, Argentina, which is a predominantly silt-bed river witha large suspended sediment load. These results show that the parametricechosounder can provide high-resolution (decimetre) subsurface imaging fromfine-grained rivers that is equivalent to the more commonly used ground-penetratingradar that has been shown to work well in coarser-grained rivers. Analysisof the data reveals that the alluvial architecture of the Rıo Bermejo ischaracterized by large-scale inclined heterolithic stratification generated bypoint-bar evolution, and associated large-scale scour surfaces that result fromchannel migration. The small-scale and medium-scale structure of the sedimentaryarchitecture is generated by vertical accretion deposits, bed sets associatedwith small bars, dunes and climbing ripples and the cut and fill fromsmall cross-bar channels. This style of alluvial architecture is very differentfrom other modern fine-grained rivers reported in the literature that emphasizethe presence of oblique accretion. The Rıo Bermejo differs from these other riversbecause it is much more active, with very high rates of bank erosion andchannel migration. Modern examples of this type of highly active fine-grainedriver have been reported rarely in the literature, although ancient examples aremore prevalent and show similarities with the alluvial architecture of the RıoBermejo, which thus represents a useful analogue for their identification andinterpretation. Although the full spectrum of the sedimentology of fine-grainedrivers has yet to be revealed, meandering rivers dominated by lateral or obliqueaccretion probably represent end members of such channels, with the specificstyle of sedimentation being controlled by grain size and sediment load characteristics. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-03 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/26531 Sambrook Smith, Gregory H.; Best, James L.; Leroy, Jessica Z.; Orfeo, Oscar; The alluvial architecture of a suspended sediment dominated meandering river: the Río Bermejo, Argentina; Wiley Blackwell Publishing, Inc; Sedimentology; 63; 5; 3-2016; 1187-1208 0037-0746 0037-0746 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/26531 |
identifier_str_mv |
Sambrook Smith, Gregory H.; Best, James L.; Leroy, Jessica Z.; Orfeo, Oscar; The alluvial architecture of a suspended sediment dominated meandering river: the Río Bermejo, Argentina; Wiley Blackwell Publishing, Inc; Sedimentology; 63; 5; 3-2016; 1187-1208 0037-0746 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/sed.12256/abstract info:eu-repo/semantics/altIdentifier/doi/10.1111/sed.12256 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844614481144971264 |
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13.070432 |