Fault architecture and related distribution of physical properties in granitic massifs: geological and geophysical methodologies
[EN] Geological and geophysical data acquired in several projects aimed to characterization of structures in granitic rocks, make possible to evaluate the efficiency and resolution of several geological and geophysical methodologies for their study. The analysis of the spatial distribution of fractu...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2006 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/5501 |
| Acceso en línea: | http://hdl.handle.net/10261/5501 |
| Access Level: | acceso abierto |
| Palabra clave: | Fault zone Fault zone architecture Geostatistical modeling Seismic velocities Seismic tomography Seismic anisotropy Zona de falla Arquitectura de las zonas de falla Modelado geostadístico Velocidades sísmicas Tomografía sísmica Anisotropía sísmica |
| Sumario: | [EN] Geological and geophysical data acquired in several projects aimed to characterization of structures in granitic rocks, make possible to evaluate the efficiency and resolution of several geological and geophysical methodologies for their study. The analysis of the spatial distribution of fracture density in granitic bodies makes possible to identify fault damage zones as well as the central fault cores. Measures of Fracture Index in a granitic massif can be used to generate 3-D stochastic models and simulations, which provide an image of the architecture of fault zones and the related distribution of physical properties. Geostatistical methods are a tool to integrate geological and geophysical data in 3-D. Borehole and surface geophysical data provide additional constraints for fracture mapping of a granitic body. High resolution reflection seismic experiments together with azimut variable vertical seismic profiles acquired in borehole, as well as surface tomographic 3-D acquisition, have proved to be very efficient in resolving the fault structure of granites. |
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