Medidas de deformación finita en la Cuenca de Cameros a partir de maclas de calcita en grietas de tensión
In the central part of the Cameros basin (NW Iberian Chain) has been analysed the orientation of calcite c-axes and e-twin from the sparitic grains that filled extension veins in this region. The c-axls orientations allow to establish that during the mesozoic extensional episode, when was developed...
| 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:10272/10322 |
| Acceso en línea: | http://hdl.handle.net/10272/10322 |
| Access Level: | acceso abierto |
| Palabra clave: | Iberian Chain Cameros basins Calcite vein Calcite e-twins Strain determinations |
| Sumario: | In the central part of the Cameros basin (NW Iberian Chain) has been analysed the orientation of calcite c-axes and e-twin from the sparitic grains that filled extension veins in this region. The c-axls orientations allow to establish that during the mesozoic extensional episode, when was developed this basin, besides of an extension NE-SW also existed another with a NNW-SSE trend, this last extension direction probably has a regional character. The calcite e-twins show the existence of two different orientations for strain ellipsoids. A first group has orientations that would be compatible with structures associated with the development of the basin inversion and with the NE-SW schistosity. While the other is almost perpendicular to the former and it is compatible with a NW-SE compression not described until the moment. This last deformation episode probably has a regional meaning (Cuadarrama compression? from Capote et al., 1990), and it likely also has a relative importance in the development of structures that show this region |
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