2024-03-28T14:13:40Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/315022015-05-26T09:01:24Zcom_10261_91com_10261_8col_10261_344
DIGITAL.CSIC
author
Muñoz, Delia
author
Cisternas, A.
author
Udías, A.
author
Mezcua, Julio
author
Sanz de Galdeano, Carlos
author
Morales, José
author
Sánchez-Venero, M.
author
Haessler, H.
author
Ibánez, J.
author
Buforn, Elisa
author
Pascual, G.
author
Rivera, L.
2011-01-25T11:14:34Z
2011-01-25T11:14:34Z
2002-10-24
Tectonophysics 356(4): 233-252 (2002)
0040-1951
http://hdl.handle.net/10261/31502
10.1016/S0040-1951(02)00338-4
A microseismic experiment carried out in 1994 in the Granada Basin (Spain) permitted the precise recording of more than 80 local earthquakes. The dense distribution of the local network, with 40 to 50 instrumental records for each event, enabled us to have well-controlled hypocenters, and also 10 reliable focal mechanisms. The above observations are interpreted together with topographic data, neotectonics, and sub-surface information. Microtectonic observations in Sierra Elvira, Padul and Zafarraya gave a set of fault planes and striae, which were interpreted in terms of the recent regional stress tensor. The actual stress tensor obtained from the microseismic campaign data gives a regime in radial extension, with σ1 vertical and σ3 oriented NS to NNE. Microtectonic information is coherent with these orientations, but closer to 3-axial extension. A set of 64 mechanisms obtained from the permanent Andalusian network favors a NS orientation for σ3. This results are interpreted in terms of the general model implying the lateral ejection of the Betic ranges towards the Atlantic.
eng
closedAccess
Granada Basin
Andalucía
Microseismicity
Stress tensor
Neotectonics
Microseismicity and tectonics in the Granada Basin (Spain)
artículo
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