Title:
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Estudio comparado de la génesis de espeleotemas silíceos en granitoides de climas semiáridos y templados húmedos
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Author:
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Sanjurjo-Sánchez, Jorge; Fernández Verdía, M.; Roqué i Pau, Carles; Pallí i Buxó, Lluís; Vidal Romaní, Juan Ramón
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Abstract:
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Silica speleothems take differenr forms such as cylindrical stems growing from either the floor or the ceiling in granitic caves. Mineralogically they are opal-A and accumulate in successive layers with a whiskery druse tip formed by gypsum crystals. Initially they are porous but progressively become infilled by opal precipitation. This results in formation of solid speleothems. their size is only a few millimetres long. Bacterial activity accelerate quartz dissolution |
Publication date:
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2013-09-12 |
Subject(s):
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-Granit -Hidrologia càrstica -Hydrology, Karst |
Rights:
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Tots els drets reservats |
Document type:
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Article Article - Published version |
Published by:
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Sociedade Geológica de Portugal
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