Sobre el origen del Monumento Natural Cascadas del Huéznar* (San Nicolás del Puerto, Parque Natural Sierra Norte de Sevilla)
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Abstract
El Monumento Natural Cascadas del Huéznar es uno de los emplazamientos
geoturísticos de mayor valor dentro del Parque Natural Sierra Norte
de Sevilla, a pesar de lo cual las referencias sobre su origen son escasas. En
el presente trabajo presentamos datos fisiográficos y geológicos del entorno
de las Cascadas del Huéznar, al tiempo que aportamos una hipótesis sobre
su origen. En este sentido la característica más significativa es la confluencia
en las cascadas de distintos factores tectónicos y litológicos que jugaron
un papel fundamental en la actual configuración del paisaje. Estos son: (1)
la importante falla Varisca situada en la base del sistema de cascadas, de dirección
prácticamente perpendicular al río; (2) el dique microdiorítico asociado
a esta falla; y (3) los cambios laterales de facies que se evidencian
aguas arriba (facies esencialmente carbonatadas) y aguas abajo (facies esencialmente
detríticas) de las cascadas
The Natural Monument Cascadas del Huéznar is one of the sites with most geotouristic value in the Sierra Norte de Sevilla Natural Park. In spite of this, the references concerning it origin are scarce. We supply in this paper physiographic and geological data of the Cascadas del Huéznar area, and provide a hypothesis about their origin. In that sense, the most significant aspect is the confluence at the waterfalls of different tectonic and lithological factors that played a crucial role in the configuration of the current landscape. These are (1) the important Variscan fault almost perpendicular to the river at the base of the waterfall system; (2) the microdioritic dike associated to this fault; and (3) the lithofacies variation upstream (essentially carbonate) and downstream (essentially detrital) of the waterfalls
The Natural Monument Cascadas del Huéznar is one of the sites with most geotouristic value in the Sierra Norte de Sevilla Natural Park. In spite of this, the references concerning it origin are scarce. We supply in this paper physiographic and geological data of the Cascadas del Huéznar area, and provide a hypothesis about their origin. In that sense, the most significant aspect is the confluence at the waterfalls of different tectonic and lithological factors that played a crucial role in the configuration of the current landscape. These are (1) the important Variscan fault almost perpendicular to the river at the base of the waterfall system; (2) the microdioritic dike associated to this fault; and (3) the lithofacies variation upstream (essentially carbonate) and downstream (essentially detrital) of the waterfalls











