Trazas de minerales evaporíticos en el Albiense superior de Bi Haizpeak/ Dos Hermanas (Aralar, Nafarroa): implicaciones paleotectónicas
Pétrographie analysis of a thin (50 cm) bed from the Upper Albian Bi Haizpeak/Dos Hermanas (Aralar) unit, has shown signs and traces of evaporitic minerals. These features mainly consist of gypsum inclusions, micritic feplacements of gypsum crystals, and authigenic quartz cristals with anhidrite and...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 1997 |
| País: | España |
| Institución: | Universidad de Huelva (UHU) |
| Repositorio: | Arias Montano. Repositorio Institucional de la Universidad de Huelva |
| Idioma: | español |
| OAI Identifier: | oai:ariasmontano.uhu.es:10272/10602 |
| Acceso en línea: | http://hdl.handle.net/10272/10602 |
| Access Level: | acceso abierto |
| Palabra clave: | Gypsum pseudomorph Autigenic quartz Ca sulphate inclusions Synsedimentary faults Keuper salt Late Albian |
| Sumario: | Pétrographie analysis of a thin (50 cm) bed from the Upper Albian Bi Haizpeak/Dos Hermanas (Aralar) unit, has shown signs and traces of evaporitic minerals. These features mainly consist of gypsum inclusions, micritic feplacements of gypsum crystals, and authigenic quartz cristals with anhidrite and gypsum inclusions. This is the first reference to Albian evaporites in the Basque-Cantabrian Basin, wihch, on the other hand, were formed in a general humid climate. We attribute these sulphate minerals to anomalous sedimentary conditions, related to a pulse of local ascension ofKeuper salt through synsedimentary faults |
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