Simulación geoestadística en 2-D de las zonas de falla en el plutón granodiorítico de Fontanosas (Ciudad Real), zona Centro-Ibérica meridional
In this study, a fracture index (FI) distribution method of geostatistical modelling and simulation in 2-D is used to characterize quantitatively the fracture system developed in the Fontanosas granodioritic pluton (Southern Central-Iberian zone of the Iberian Hercynian Massif). The fracture index (...
| Autores: | , |
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| Formato: | artículo |
| Fecha de publicación: | 2002 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | RUIdeRA. Repositorio Institucional de la UCLM |
| OAI Identifier: | oai:ruidera.uclm.es:10578/47807 |
| Acesso em linha: | https://hdl.handle.net/10578/47807 |
| Access Level: | acceso abierto |
| Palavra-chave: | fault zones Fontanosas granodioritic pluton fracture index geostatistical modeling Iberian Massif índice de fracturación Macizo Ibérico modelización geoestadística plutón granodiorítico de Fontanosas simulación estocástica stochastical simulation zona de falla |
| Resumo: | In this study, a fracture index (FI) distribution method of geostatistical modelling and simulation in 2-D is used to characterize quantitatively the fracture system developed in the Fontanosas granodioritic pluton (Southern Central-Iberian zone of the Iberian Hercynian Massif). The fracture index (FI, m-1 units) is a measure of the fracture density in discrete domains of the rock massif. To validate the results of geostatistical simulation a detailed structural map of the area was also made on a scale of 1:5000. The resulting grid, expressed as pixel-maps, describe the continuous value of the FI in 2-D for the whole Fontanosas granodioritic pluton. Based on the simulated distribution of the FI and their correlation with mapped faults, two structural domains are distinguised in the studied area: elongated bands of fault zones with high FI values and romboidal blocks located between them with low FI values. The separation between both structural domains is gradual and defined by an increase of fault density toward the central fault core. Though a threshold value of the FI that separate both structural domains is not clearly defined, the fault zones generally present FI>2.0 m-1 and the individualized blocks FI<1.0 m-1. As consequence, the obtained grid of the FI allow the quantitative structural classification of the granitic massif in 2-D and understanding the fault zone architecture developed in granitic massifs, as Fontanosas granodioritic pluton. |
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