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Docta Complutense
Article . 2017
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Travertinos coloreados en la Cordillera Bética (SE de la Península Ibérica): situación geológica y características petrofísicas

Authors: García del Cura, María Ángeles; Benavente, David; Martínez Martínez, Javier; Ordóñez Delgado, Salvador;

Travertinos coloreados en la Cordillera Bética (SE de la Península Ibérica): situación geológica y características petrofísicas

Abstract

En la zona Bética Externa, se encuentran depósitos de travertinos coloreados de valor como rocas ornamentales cuyas características petrofísicas son poco conocidas. Están en relación con fallas activas. Las canteras de travertino se sitúan en Alhama de Almería, Albox (Almería) y Baños de Mula (Murcia). Estos travertinos forman parte de la última etapa del relleno de las cuencas terciarias postectónicas béticas (Pleistoceno) y generalmente aparecen espacialmente asociados a episodios tobáceos. El objetivo de este trabajo es definir las facies de estos travertinos y las características petrofísicas que presentan con vistas a su utilización como roca ornamental. Predominan en ellos las facies bandeadas (1 - 10 cm). Su porosidad es variable (5 - 15%) consistente en una microporosidad bastante homogénea, con moda (0.005-0.05 µm) ligada al carbonato micrítico, y una familia de poros menos seleccionada entre 0.05-2 µm asociada a cristales de mayor tamaño. La macroporosidad de tamaño y disposición variable es un rasgo característico de estos travertinos. El coeficiente de absorción capilar es muy anisótropo y varía mucho en los diferentes travertinos estudiados. El valor mínimo encontrado en travertinos comercializados ha sido de 1.42 (g/m\(^2\)s\(^0\)\(^.\)\(^5\)) en dirección oblicua a la estructura en el travertino Rojo Alhama y el máximo de 10.71 (g/m\(^2\)s\(^0\)\(^.\)\(^5\)) en dirección paralela a la estructura en el travertino de Albox. Su resistencia es notablemente anisótropa, encontrando valores de resistencia a compresión que pueden llegar a alcanzar 68 MPa en dirección perpendicular al bandeado. Cortados en dicha dirección constituyen una roca ornamental de buena calidad dentro de la categoría de mármoles comerciales.

Instituto de Geología Económica, Consejo Superior de Investigaciones Científicas y Universidad Complutense de Madrid, España

Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante, España

Laboratorio de Petrología Aplicada, Universidad de Alicante, España

Instituto Geológico y Minero de España, España

Country
Spain
Keywords

ornamental rock, Travertine, Cordilleras Béticas, petrofísica, Mineral resource, 552.08, Betic Range, recurso minero, Petrología, roca ornamental, mineral resource, Travertino, petrophysics, Ornamental rock, Recurso minero, Petrophysics, Betic ranges, travertine, mármol, travertino, Roca ornamental, Petrofísica, Petrología y Geoquímica

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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!
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