Seismostructural studies in the Pyrenees: Evolution and recent results |
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| Authors: | J Gallart M Daignières J Gagnepain-Beyneix A Hirn C Olivera |
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| Institution: | (1) Laboratoire d'Etude Géophysique de Structures Profondes, assocíé au CNRS, Institut de Physique du Globe, 4 place Jussieu, Tour 14, 75230 Paris Cédex 05, France;(2) Departmento de Fisica de la Tierra y del Cosmos, Universidad de Barcelona, Av. Diagonal 645, Barcelona, Spain;(3) Centre Géologique et Géophysique (Lab. du CNRS) U.S.T.L., Montpellier, France;(4) Laboratori d'Estudis Geofiscics E. F. Institut d'Estudis Catalans, Barcelona, Spain |
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| Abstract: | Seismic studies of the last ten years in the Pyrenees (deep seismic profiles, fan profiles at critical distance, teleseismic travel-time residuals, seismicity from temporary networks) and their most significant results concerning crustal thickness in the different structural units of the range, sharpness of the transition between these units at depth, and east-west lateral evolution are reviewed in this paper. Focal mechanisms for three recent earthquakes ofM 4 are given, and connections of local seismicity with major tectonic structures such as the North Pyrenean Fault and its western prolongation at depth are described. |
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