Publication: Análisis morfoestructural del centro peninsular
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2008
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Sociedad Geológica de España.
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Abstract
El paisaje del centro peninsular ha sido creado por la actividad tectónica ocurrida desde el Terciario hasta la actualidad. Mediante el análisis espectral y la elaboración de mapas de envolventes se han analizado los principales rasgos morfoestructurales del área. Las longitudes de onda de la topografía muestran el predominio de orientaciones NE-SO, claramente alpinas, aunque cuando son menores de 50 km se observa la superposición de trenes de ondulaciones NO-SE relacionadas con las estructuras variscas. El mapa de subenvolventes muestra la existencia de tres tipos de zonas: zonas de cordillera asociadas a las cadenas montañosas, zonas de plataforma asociadas a relieves suaves y zonas de incisión, relacionadas con el encajamiento de los ríos. Las primeras están caracterizadas por un desequilibrio hídrico y alto potencial de erosión frente a las zonas de plataforma en las que existe un relativo equilibrio. En general el mapa muestra cómo las cuencas del Tajo y del Guadiana cambian desde zonas de plataforma en el Este hacia zonas de incisión hacia el Oeste.
The landscape of today's central Iberian Peninsula was shaped by ongoing tectonic activity since the Tertiary. Spectral analysis and subenvelope map let us to decipher some morfostructural features of central Iberian Peninsula. NE-SO wavelength predominate although when wavelength shorter than 50 km show the existence of NO-SE ondulations corresponding with variscan structures. Subenvelope pattern let to differentiate three zones: Cordilleran zones related to mountainous ranges, platform zones associated with smoother relief and incision zones related to incised valleys. The first one is characterized by a non-balanced hydric regimen and a great erosional power capacity whereas platform zones exhibit a balanced hydric regimen. The map shows the existence of a change from old planation surfaces in the eastern parts of the Tajo and Guadiana basins towards incision zones in the west part.
The landscape of today's central Iberian Peninsula was shaped by ongoing tectonic activity since the Tertiary. Spectral analysis and subenvelope map let us to decipher some morfostructural features of central Iberian Peninsula. NE-SO wavelength predominate although when wavelength shorter than 50 km show the existence of NO-SE ondulations corresponding with variscan structures. Subenvelope pattern let to differentiate three zones: Cordilleran zones related to mountainous ranges, platform zones associated with smoother relief and incision zones related to incised valleys. The first one is characterized by a non-balanced hydric regimen and a great erosional power capacity whereas platform zones exhibit a balanced hydric regimen. The map shows the existence of a change from old planation surfaces in the eastern parts of the Tajo and Guadiana basins towards incision zones in the west part.