Estudio de la orientación preferente de ejes ópticos c de cristales de calcita en microvenas de la Cordillera Ibérica (Cuenca de Los Cameros y Rama Castellana). Nuevas aportaciones a los episodios extensionales de la Cordillera Ibérica
The study of c-axes distribution from sparry grains that fill microveins were used to define maximum horizontal extension directions (<j3) in two zones ofiberian Chain (Cameros Basin and Alto Tajo zone, Castellana Branch). A strong similitude between the (o3 directions defined for the Cameros...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2001 |
| 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:10272/9484 |
| Acceso en línea: | http://hdl.handle.net/10272/9484 |
| Access Level: | acceso abierto |
| Palabra clave: | Iberian Chain Calcite veins C-axes, extension orientations |
| Sumario: | The study of c-axes distribution from sparry grains that fill microveins were used to define maximum horizontal extension directions (<j3) in two zones ofiberian Chain (Cameros Basin and Alto Tajo zone, Castellana Branch). A strong similitude between the (o3 directions defined for the Cameros Basin and the Alto Tajo zone (NNO-SSE, NNE-SSO and NE-SO) supports the idea that these extension directions are defining episodes of extension with regional character. The NNO-SSE extension direction has been associated with the older episode of micro-veins opening (perhaps before the Upper Cretaceous). This episode has been associated with the extensional event responsible of Cameros Basin opening (Upper jurassic-LoweCretaceous). The others two younger directions of extension (NNE-SSO and NE-SO) could be associate with the more important deformantional events of Tertiary for the Castellana Branch: Guadarrama (Capote et a I., 1990) and Altomira episodes (Muñoz-Martín, 1998). These deformantional events also has been described in the Cameros Basin |
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