Estudio comparado de la génesis de espeleotemas silíceos en granitoides de climas semiáridos y templados húmedos
Data(s) |
12/09/2013
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Resumo |
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 |
Identificador | |
Idioma(s) |
spa |
Publicador |
Sociedade Geológica de Portugal |
Direitos |
Tots els drets reservats |
Palavras-Chave | #Granit #Hidrologia càrstica #Hydrology, Karst |
Tipo |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |