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La degradación cuaternaria del piedemonte del río Yeltes (Salamanca)

Authors: Cantano Martín, Mercedes; Martín Serrano, A.; Mediavilla López, Rosa; Carral, P.; Rubio, F. J.;

La degradación cuaternaria del piedemonte del río Yeltes (Salamanca)

Abstract

El río Yeltes, tributario del Tormes y originario de la Sierra de la Peña de Francia, a la salida de ésta se enmarca en una orla de sedimentos aluviales de planta triangular, formados por rañas y terrazas fluviales. Pertenecen al piedemonte meridional de la fosa de Ciudad Rodrigo, edificado sobre una formación roja miocena que sella un relleno fundamentalmente arcósico atribuido al Paleógeno medio-superior. El techo de este piedemonte que se prolonga hacia el interior montañoso, está constituido por un sistema de grandes conos aluviales con carácter de raña. Dichos abanicos están constituidos por sedimentos fluviales de alta energía, cuyo escalonamiento sucesivo en plataformas cada vez más alargadas, marcan el ritmo de la disección hasta la definición actual del río Yeltes. La franja de depósitos fluviales asociados, con sus rasgos cambiantes (sobre todo edáficos y de alteración), paralelamente a su evolución, se alarga desde los grandes abanicos iniciales hacia el límite septentrional de la fosa, donde se estrangulan por el encajamiento del río. Dicho estrangulamiento causado por el condicionamiento morfo y litoestructural ejercido por el sustrato en el trazado del río, define una situación cartográfica anómala en relación con otros piedemontes conocidos de la Meseta. Concretar la edad de los distintos episodios de su evolución es por el momento bastante problemática.

Country
Spain
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Keywords

Artículos de Investigación, piedemonte de la Meseta, Terrazas, incisión fluvial, Incisión fluvial, Fluvial incision, Piedemonte de la Meseta, Piedmont of the Meseta, Terraces

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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gold
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