DUGiDocsEstudio comparado de la génesis de espeleotemas silíceos en granitoides de climas semiáridos y templados húmedos
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dc.date.accessioned
2013-09-12T11:50:49Z
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2013-09-12T11:50:49Z
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2001
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dc.description.abstract
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
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application/pdf
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spa
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Sociedade Geológica de Portugal
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© V Reuniao do Quaternário Ibérico = V Reunión del Quaternario Ibérico = V Iberian Quaternary Meeting : I Congresso do Quaternário de Países de Línguas Ibéricas = I Congreso del Cuaternario de Países de Lenguas Ibéricas = I Quaternary Congress of Countries of Iberian Languages : Actas : Lisboa, Portugal, 23-27 de Julho de 2001, 2001, p.77-80
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Estudio comparado de la génesis de espeleotemas silíceos en granitoides de climas semiáridos y templados húmedos
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info:eu-repo/semantics/article
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info:eu-repo/semantics/openAccess
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