Evidencias del desequilibrio y la reorganización de la red fluvial en la cuenca de Ouarzazate (Marruecos)

Since it became externally drained, the fluvial dynamics of the Ouarzazate foreland basin has been dominated by erosive processes due to a base level fall. The basin landscape is dominated by extensive Quaternary deposits aggraded by the transverse rivers draining the High Atlas Mountains. These dep...

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Detalles Bibliográficos
Autores: Pastor, Àlvar, Babault, Julien, Teixell, Antonio, Arboleya, María Luisa
Tipo de recurso: artículo
Fecha de publicación:2010
País:España
Institución:Universidad de Huelva (UHU)
Repositorio:Arias Montano. Repositorio Institucional de la Universidad de Huelva
Idioma:español
OAI Identifier:oai:ariasmontano.uhu.es:10272/7469
Acceso en línea:http://hdl.handle.net/10272/7469
Access Level:acceso abierto
Palabra clave:Ouarzazate basin
Glacis
Stream piracy
Incision
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spelling Evidencias del desequilibrio y la reorganización de la red fluvial en la cuenca de Ouarzazate (Marruecos)Evidences for a non-steady state and a reorganization of the fluvial network in the Ouarzazate basin (Morocco)Pastor, ÀlvarBabault, JulienTeixell, AntonioArboleya, María LuisaOuarzazate basinGlacisStream piracyIncisionSince it became externally drained, the fluvial dynamics of the Ouarzazate foreland basin has been dominated by erosive processes due to a base level fall. The basin landscape is dominated by extensive Quaternary deposits aggraded by the transverse rivers draining the High Atlas Mountains. These deposits accumulated in valleys and pediments incised in the basin Tertiary infill, characterized mostly by fine-grained and soft sediments. Evidences of fluvial captures are abundant in recent times and throughout the Quaternary, in a scenario where there is more incision efficiency in the interfluves’ secondary streams (characterized by fine-grained or sediment-free pediments) than in the main transverse rivers (characterized by thick gravel deposits). Satellite imagery, elevation data and field observations demonstrate how minor streams increase their catchment areas by headward erosion, creating extensive pediments lying under the main rivers and producing captures of the main rivers. This study demonstrates the unsteady-state of the drainage network of the Ouarzazate basin and its recent reorganization, apparently uncoupled from tectonic or climatic processesUniversidad de Huelva20102010-01-0120102010-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10272/7469reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelvainstname:Universidad de Huelva (UHU)Españolspaopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:ariasmontano.uhu.es:10272/74692026-06-02T14:58:11Z
dc.title.none.fl_str_mv Evidencias del desequilibrio y la reorganización de la red fluvial en la cuenca de Ouarzazate (Marruecos)
Evidences for a non-steady state and a reorganization of the fluvial network in the Ouarzazate basin (Morocco)
title Evidencias del desequilibrio y la reorganización de la red fluvial en la cuenca de Ouarzazate (Marruecos)
spellingShingle Evidencias del desequilibrio y la reorganización de la red fluvial en la cuenca de Ouarzazate (Marruecos)
Pastor, Àlvar
Ouarzazate basin
Glacis
Stream piracy
Incision
title_short Evidencias del desequilibrio y la reorganización de la red fluvial en la cuenca de Ouarzazate (Marruecos)
title_full Evidencias del desequilibrio y la reorganización de la red fluvial en la cuenca de Ouarzazate (Marruecos)
title_fullStr Evidencias del desequilibrio y la reorganización de la red fluvial en la cuenca de Ouarzazate (Marruecos)
title_full_unstemmed Evidencias del desequilibrio y la reorganización de la red fluvial en la cuenca de Ouarzazate (Marruecos)
title_sort Evidencias del desequilibrio y la reorganización de la red fluvial en la cuenca de Ouarzazate (Marruecos)
dc.creator.none.fl_str_mv Pastor, Àlvar
Babault, Julien
Teixell, Antonio
Arboleya, María Luisa
author Pastor, Àlvar
author_facet Pastor, Àlvar
Babault, Julien
Teixell, Antonio
Arboleya, María Luisa
author_role author
author2 Babault, Julien
Teixell, Antonio
Arboleya, María Luisa
author2_role author
author
author
dc.contributor.none.fl_str_mv
dc.subject.none.fl_str_mv Ouarzazate basin
Glacis
Stream piracy
Incision
topic Ouarzazate basin
Glacis
Stream piracy
Incision
description Since it became externally drained, the fluvial dynamics of the Ouarzazate foreland basin has been dominated by erosive processes due to a base level fall. The basin landscape is dominated by extensive Quaternary deposits aggraded by the transverse rivers draining the High Atlas Mountains. These deposits accumulated in valleys and pediments incised in the basin Tertiary infill, characterized mostly by fine-grained and soft sediments. Evidences of fluvial captures are abundant in recent times and throughout the Quaternary, in a scenario where there is more incision efficiency in the interfluves’ secondary streams (characterized by fine-grained or sediment-free pediments) than in the main transverse rivers (characterized by thick gravel deposits). Satellite imagery, elevation data and field observations demonstrate how minor streams increase their catchment areas by headward erosion, creating extensive pediments lying under the main rivers and producing captures of the main rivers. This study demonstrates the unsteady-state of the drainage network of the Ouarzazate basin and its recent reorganization, apparently uncoupled from tectonic or climatic processes
publishDate 2010
dc.date.none.fl_str_mv 2010
2010-01-01
2010
2010-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10272/7469
url http://hdl.handle.net/10272/7469
dc.language.none.fl_str_mv Español
spa
language_invalid_str_mv Español
language spa
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidad de Huelva
publisher.none.fl_str_mv Universidad de Huelva
dc.source.none.fl_str_mv reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelva
instname:Universidad de Huelva (UHU)
instname_str Universidad de Huelva (UHU)
reponame_str Arias Montano. Repositorio Institucional de la Universidad de Huelva
collection Arias Montano. Repositorio Institucional de la Universidad de Huelva
repository.name.fl_str_mv
repository.mail.fl_str_mv
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